What are exhaust and emission control systems used for?

Exhaust and emission control systems are used for the safe discharge of exhaust gases and to improve engine operating conditions. They limit noise, support proper gas flow, and help meet emission standards. Without their proper operation, control unit errors, increased fuel consumption, and power loss may occur. In practice, they also affect the car's refinement and the durability of cooperating components.

What is the construction and function of an exhaust heat shield?

An exhaust heat shield is an element usually made of profiled sheet metal, mounted near hot exhaust parts. It serves to limit the impact of high temperatures on the body floor, hoses, and mounting elements. Its construction includes stiffening ribs and holes for bolts or clips. Depending on the model, it works with chassis tunnels, the catalytic converter, the silencer, or the particulate filter.

How to choose an exhaust part for a specific car?

It is best to compare the OEM number, engine code, body version, and mounting location. It is also worth checking the connection diameter, the number and position of hangers, the type of sensor connector, and whether the car is pre-facelift or post-facelift. For parts responsible for emissions, compliance with the appropriate emission standard also matters.

What symptoms indicate wear of exhaust and emission control elements?

Typical symptoms include louder engine operation, metallic vibrations under the floor, power loss, higher fuel consumption, or an engine error light. In case of leaks, an exhaust smell may appear, and with DPF or catalytic converter problems, also reduced performance. It is worth noting whether the symptoms occur on a cold engine, during acceleration, or during filter regeneration.

Which cooperating elements should be paid attention to during assembly?

During assembly, the condition of gaskets, clamps, flanges, bolts, rubber hangers, and heat shields should be assessed. Hoses and sensors should also be checked, as a damaged connector or connection leak can cause incorrect readings. After replacement, it is important to properly align the entire system so that it does not transmit vibrations to the bodywork.

Exhaust systems and exhaust gas treatment

At Global Parts, we offer a wide selection of original used car parts, including exhaust systems and exhaust aftertreatment components for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each part we offer undergoes quality control to ensure you receive a top-quality product.

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EGR Pipe Mercedes W639 W906 OM651 Valve Hose Line Diesel Engine A6511400308

PLN 284.95

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Mercedes W906 OM651 Diesel EGR Cooler Exhaust Heat Exchanger Pipe A6511402108

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Part no. A6511402108

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Lambda Probe Mercedes ML GL Class W164 W169 Oxygen Sensor A0035427018

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Part no. A0035427018

Lambda Probe Mercedes ML GL Class W164 W169 Oxygen Sensor A0035427018

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Mercedes W204 W212 Vacuum Solenoid Valve Pressure Converter AMG A0014760532

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Part no. A0014760532

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Part no. A6511402108-1

Mercedes W906 OM651 Diesel EGR Cooler Exhaust Heat Exchanger Pipe A6511402108

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Mercedes W906 Starter Heat Resistant Cover Plate Motor Shield OM651 A6511510245

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Part no. A6511510245

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Mercedes W212 W221 EGR Valve Pipe Housing Hose OM642 Diesel Engine A6421402508

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Part no. A6421402508

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Part no. A0014760532-1

Mercedes W204 W212 Vacuum Solenoid Valve Pressure Converter AMG A0014760532

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Part no. A6421401060

EGR Valve Mercedes W204 W212 OM642 Exhaust Gas Recirculation Part A6421401060

PLN 189.95

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Part no. A0061536628

Mercedes W169 OM640 Vacuum Solenoid Valve A0061536628

PLN 46.95

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Mercedes W906 Engine OM651 Diesel Exhaust Manifold Unit Cover A6511400909

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Part no. A6511400909-2

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Exhaust Clamp Mercedes W204 W212 Clip Pipe Connector Bracket A0009958902

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Part no. A0009958902

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Mercedes W203 C209 Lambda Oxygen Sensor Probe A0035427118

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Part no. A0035427118

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Mercedes-Benz W212 W164 OM642 Intake Manifold Flap Actuator Motor A6421500594

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Part no. A6421500594

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Mercedes W204 C207 W212 M271 Lambda Sensor Oxygen Probe A0065422718

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Part no. A0065422718

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Mercedes W204 W209 W212 M272 Secondary Air Pump A0001405185

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Part no. A0001405185

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PLN 237.95

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Mercedes C E Class W203 W211 CDI Diesel Exhaust Conventer Clamp A2034900441

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Part no. A2034900441

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Mercedes W203 Petrol Lambda Oxygen Sensor Probe A0025400617

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Part no. A0025400617

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Mercedes W164 W211 Intake Manifold Flap Actuator Motor OM642 A6421500494

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Part no. A6421500494

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Part no. A6511400909-1

Exhaust Manifold Mercedes W212 Engine OM651 Diesel Unit Cover A6511400909

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EGR Pipe Mercedes W204 W212 W906 OM651 Valve Line Diesel Engine A6511411004

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Part no. A6511411004

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Temperature Sensor Mercedes W176 W246 Diesel Exhaust Gas A0009056704

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Part no. A0009056704

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Mercedes W212 OM651 Diesel Exhaust Gas Temperature Sensor A0009056404

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Part no. A0009056404

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Part no. A6421401308

Mercedes W203 W204 W212 EGR Pipe Valve Line Hose OM642 Diesel A6421401308

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Mercedes W204 W212 EGR Valve Bracket OM651 Engine Valve Mount Holder A6510901041

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Part no. A6510901041

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Mercedes ML W164 OM642 Exhaust Gas Recirculation EGR Valve A6421400360

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Part no. A6421400360

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EGR Pipe Mercedes W164 W204 W212 OM642 Valve Line Diesel Engine A6421403408

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Part no. A0005422404

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Mercedes W204 W221 OM646 EGR Valve Pipe Housing Hose Diesel Engine A6461410304

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Part no. A6461410304

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EGR Bracket MERCEDES W204 W906 Diesel OM651 EGR Valve Pipe Holder A6511410340

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Part no. A6511410340

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Mercedes W177 Diesel OM654 Exhaust Gas Recirculation Pressure Sensor A0009057113

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Part no. A0009057113

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EGR Valve Mercedes W906 W205 Diesel OM651 EGR By Pass A6511400660

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Part no. A6511400660

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Mercedes W204 W212 Exhaust Muffler Support Mounting Bracket Holder A2124924441

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Part no. A2124924441

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Mercedes W164 W211 OM642 Intake Manifold Flap Actuator Motor A6421500494

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Part no. A6421500494-1

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Flap Actuator Mercedes W204 W212 OM651 Diesel Intake Manifold Engine A6511500094

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Part no. A6511500094

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Rubber Mounting Mercedes W204 W212 Exhaust Hose Mount Support A2114910947

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Part no. A2114910947

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Mercedes W176 OM607 EGR Pipe Line Diesel A6070900237 744818

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Part no. A6070900237

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Mercedes W204 W212 M266 Vacuum Solenoid Valve Pressure Converter A2661530059

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Part no. A2661530059-1

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Mercedes A238 M276 Petrol Exhaust Lambda Probe Oxygen Sensor A0005421600

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Part no. A0005421600

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NOX Sensor Mercedes W204 W212 C253 Lambda Oxygen Probe A0095425518

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Part no. A0095425518

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Mercedes W907 OM651 Diesel Bracket Exhaust System Mount Holder A9074923500

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Part no. A9074923500

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Mercedes W176 W246 OM651 Diesel Exhaust Pressure Sensor DPF A0071536028

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Part no. A0071536028

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Part no. A0021407460

EGR Valve Mercedes W203 W204 W212 M272 Exhaust Gas Recirculation A0021407460

PLN 66.95

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Mercedes W204 Diesel OM642 Exhaust Gas Cooler Heat Exchanger A6421401875

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Part no. A6421401875

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Mercedes W213 C238 OM654 Bracket Particulate Filter Mount Holder A6541420140

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Part no. A6541420140

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Part no. A0009053009-1

Mercedes Sprinter W907 W910 OM651 NOX Sensor Lambda Oxygen Probe A0009053009

PLN 227.95

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Lambda Sensor Mercedes W169 W245 Oxygen Probe A0015420718

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Exhaust Tip Mercedes W205 C238 Exhaust Muffler Pipe Rear Right A2054900400

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Mercedes W176 W246 Gearbox Solenoid Valve Transmission 724.004 A2469820303

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Mercedes W176 W246 Lambda Oxygen Sensor Probe Exhaust Wiring A0075426318

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Heat Protection Shield Mercedes W204 OM646 Engine Compartment Plate A6460940720

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Part no. A6460940720

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Exhaust Manifold Mercedes Sprinter W910 Engine OM651 Diesel Unit A6511420801

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EGR Valve Mercedes W176 W246 OM607 Diesel Exhaust Gas Recirculation A6071400060

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Part no. A0009976912

Breather Valve Mercedes W205 Vacuum Solenoid Valve A0009976912

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Mercedes W205 OM651 Exhaust Manifold Heat Shield Screening Plate A6511420021

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Part no. A6511420021

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Lambda Sensor Mercedes W447 Diesel OM651 Catalytic Converter Probe A0065421718

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Mercedes W177 W247 Petrol M264 Camshaft Adjuster Solenoid Valve A2649820500

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Part no. A6511510145

Engine Heat Shield Mercedes Vito W639 OM651 Starter Motor Heat Plate A6511510145

PLN 56.95

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Mercedes W204 W212 Exhaust Muffler Support Mounting Bracket OM651 A2044928741

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Part no. A2044928741

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Exhaust EGR Mercedes W204 W212 W221 OM642 Diesel Diverter Valve A6421401263

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EGR Valve Mercedes W212 Sprinter W906 OM651 Exhaust Gas Recirculation Diesel

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Mercedes W176 Exhaust Muffler Pipe Rear Left Right N/O/S AMG Exhaust Tips Set

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Part no. A2464900427

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Engine Heat Plate Mercedes W221 OM642 Left N/S Insulation Panel A6420902941

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Part no. A6420902941

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Mercedes W176 W246 Renault Trafic Vacuum Pressure Solenoid Valve 8200790180

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Part no. 8200790180

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EGR Valve Mercedes W169 W245 OM640 Exhaust Gas Recirculation A6401402060

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Part no. A6401402060-2

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Exhaust Manifold Mercedes W204 W211 W212 W221 OM642 Engine Left N/S A6421400709

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Part no. A6421400709

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Mercedes W639 W906 OM651 Heat Shield Cover Plate Exhaust Manifold A6511420420

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Part no. A6511420700

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EGR Pipe Mercedes W164 W204 W212 OM642 Valve Line Diesel Engine A6421401608

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Part no. A6421401608

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Mercedes W169 W245 M266 Petrol Engine Belt Tensioner A2662000970

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Part no. A2662000970-1

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Mercedes W203 W211 M271 Petrol EGR Valve Pipe Line A2711400512

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Part no. A2711400512

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Mercedes W204 W211 Exhaust Gas Temperature Sensor A0071539528

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Part no. A0071539528

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Mercedes-Benz W164 W251 OM642 Exhaust Heat Plate Cover Insulation A6420901141

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Part no. A6420901141

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Mercedes-Benz W169 W203 W204 W211 W212 Petrol Lambda Sensor Probe A0045420718

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Part no. A0045420718

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Mercedes W204 W212 Heat Shield Gearbox Transmission Insulation Plate A2042710088

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Part no. A2042710088

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Temperature Sensor Mercedes W204 W212 W906 Gas Exhaust Catalyst A0081532228

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Part no. A0081532228

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Mercedes W176 W246 OM651 Diesel Exhaust Front Pipe Downpipe A2464901510

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Part no. A2464901510

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Mercedes W203 W210 Engine Exhaust Manifold OM611 OM646 Diesel A6111420501

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Part no. A6111420501

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Temperature Sensor Mercedes W176 OM607 Diesel Exhaust Flue Sensor 226404367R

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Part no. 226404367R

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Mercedes W169 OM640 Vacuum Solenoid Valve Pressure Converter A0051535528

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Part no. A0051535528

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Mercedes W177 W205 W213 W253 W447 W907 Exhaust Pipe Clamp Muffler A0039950402

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Part no. A0039950402

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Mercedes W212 OM642 Diesel Exhaust Manifold Pipe A6421420109

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Mercedes W211 W204 S204 Lambda Sensor Front Of Catalytic Converter A0075425118

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Exhaust Temperature Sensor Mercedes W204 W212 OM651 Diesel Engine A0071536728

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Mercedes W906 Engine Mount Heat Resistant Plate Right O/S OM651 A6510960468

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Mercedes W176 W246 Exhaust Tail Pipe Left N/S Heat Shield Cover A2464900327

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EGR Mercedes W209 W219 EGR Valve Left N/S Exhaust Recirculation A1561400960

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Reliable parts for exhaust systems and emission filters – perfect fit for your car

Durable exhaust components – for maximum performance and durability

Exhaust systems and emission control systems are essential components of every modern vehicle. Their task is not only to reduce noise but, above all, to decrease the emission of harmful substances, making driving more eco-friendly and compliant with current standards. In the Global Parts automotive store, you will find a wide range of used car parts for exhaust and emission control systems for brands such as BMW, AUDI, Volkswagen, Mercedes, Mini, and others. The exhaust system in a typical passenger car operates at temperatures ranging from 200°C up to 800°C under high engine load. This is why these components must be made of corrosion-resistant and temperature-fluctuation-resistant materials, such as stainless steel or nickel alloys. A well-chosen exhaust system not only protects the environment but also increases combustion efficiency, which can translate into fuel savings of 5–7% compared to a faulty system.

How do exhaust and emission control systems work?

Exhaust systems are advanced systems consisting of many key components working together to effectively discharge exhaust gases and reduce their harmfulness. The most important elements are:

Bypass valves – control exhaust gas flow, helping to optimize pressure in the exhaust system.
EGR valves and parts – responsible for exhaust gas recirculation, which reduces nitrogen oxide emissions and improves fuel combustion.
Secondary air pumps – support the combustion process by supplying additional oxygen to the exhaust system, reducing exhaust emissions.
Catalytic converters – clean exhaust gases by neutralizing harmful substances such as nitrogen oxides or carbon monoxide.
Exhaust systems and kits – comprehensive sets of exhaust system components ensuring optimal engine performance.
Manifolds – responsible for discharging exhaust gases from the cylinders to the subsequent parts of the exhaust system.
Exhaust pipes and tips – ensure efficient exhaust discharge and give the vehicle a specific visual character.
Clamps, clips, flanges, and mounting parts – allow for solid mounting of the exhaust system.
Silencers and resonators – reduce noise generated by the engine, improving driving comfort.
Exhaust gaskets – ensure connection tightness and eliminate the risk of exhaust leaks.
Lambda sensors and O2 sensors – monitor exhaust gas composition, optimizing the air-fuel mixture and improving combustion economy.
Heat shields, connectors, and sleeves – protect exhaust system components from overheating and improve their durability.
Solenoid valves – regulate gas flow in the exhaust system, improving its efficiency. Each of these components is crucial for engine performance, driving comfort, and environmental protection.

Construction and purpose of exhaust and emission control systems

Exhaust and emission control systems are a set of parts mounted from the exhaust manifold to the final section of the exhaust under the floor and at the rear of the car. This system is used to discharge exhaust gases, dampen noise, and limit the emission of harmful compounds. A typical system includes pipes, silencers, resonators, mounting elements, heat shields, and components responsible for emission control. In many designs, it also works with the Intake and fuel system and engine management.

Comparison of exhaust and emission control component types

Component type	Main function	What to check before selection	Cooperating components
Catalytic converter	Reducing harmful exhaust emissions	OEM number, connection diameter, engine type, emission version	Lambda sensor, exhaust pipes, heat shields
EGR valve	Recirculating part of exhaust gases to the intake system	Control type, housing shape, connector, engine compatibility	Manifold, hoses, engine control unit
Silencer or resonator	Noise reduction and gas flow stabilization	Housing length, mounting points, pipe diameter, body version	Hangers, clamps, exhaust tips
Secondary air pump	Supplying additional air during startup and cold operation	OEM number, plug, mounting, hose connection direction	Control valves, hoses, electrical installation

For example, a diesel particulate filter (DPF) installed in diesel engines can trap up to 90% of soot produced during the combustion process. In cars from brands like Audi or BMW, DPF parameters are adapted to Euro 6 standards, which allow nitrogen oxide (NOx) emissions of only 80 mg/km. This shows how precisely these systems must be designed to meet strict regulations.

Why is it worth taking care of exhaust and emission control systems?

Regular maintenance and replacement of exhaust and emission control system components are the basis for efficient and eco-friendly engine operation. Neglecting these systems can lead to:

Increased exhaust emissions, which may result in failing a technical inspection.
Damage to key components such as catalytic converters or DPF filters.
Decreased vehicle performance and higher fuel consumption. At Global Parts, we offer original used car parts that undergo rigorous quality tests, ensuring reliability and durability.

Emission control function and cooperation with other systems

The emission control system is used to limit the amount of nitrogen oxides, particulate matter, and carbon monoxide leaving the exhaust system. Its effectiveness depends not only on the catalytic converter or DPF itself but also on correct sensor readings and proper operation of the control unit. Therefore, when diagnosing, it is worth considering the Automotive electrical systems and Engines and parts, because a fault outside the exhaust can affect emission errors and mixture composition.

How to choose the right parts for exhaust and emission control systems?

When choosing parts for exhaust and emission control systems, such as silencers, catalytic converters, or particulate filters, it is worth paying attention to:

Vehicle model fitment – every car brand and model requires specific solutions. At Global Parts, you will find exhaust and emission control system components perfectly matched to BMW, AUDI, Volkswagen, Mercedes, Mini, and others.
Technical condition – ensure that components are free from damage, corrosion, and cracks.
Compliance with emission standards – ensure that the selected parts meet current legal requirements regarding emissions.

Selecting parts by OEM number, engine version, and mountings

Selecting exhaust parts should be based on the OEM number, engine code, body version, and the layout of mounting points. A catalytic converter, silencer, or exhaust pipe may differ in connection diameter, housing shape, hanger position, and sensor connector type. In the case of parts such as used catalytic converters, it is safest to compare the manufacturer's number, sensor placement, and compliance with the emission standard intended for the specific car version.

Characteristics of heat shields and mounting elements

A heat shield is an element mounted above or next to the exhaust, designed to limit the penetration of high temperatures to the floor, hoses, and adjacent components. It serves to protect bodywork components and installations running near hot parts of the system. When selecting, one must pay attention to sheet metal stampings, bolt points, and chassis compatibility, similar to the Bodywork, mountings, and accessories group. Assembly is supported by clamps, bolts, flanges, and rubber hangers, which are responsible for stable suspension of the system.

To facilitate part selection, below is an example compatibility and wear symptom table

Component	Typical wear symptoms	Application / compatibility
Silencer	Louder engine operation, metallic vibrations	Many BMW, Audi, VW models
DPF filter	Power loss, engine error message	Diesel engines, Euro 5 and Euro 6
Lambda sensor	Higher fuel consumption, uneven engine operation	Petrol and hybrid types depending on version
Catalytic converter	Characteristic exhaust smell, power loss	Vehicles with Euro 3 emission standard and higher

Why is it worth choosing used exhaust and emission control parts?

Used car parts are a good solution that allows for savings while maintaining high quality. By choosing used exhaust systems and emission control parts, you gain:

Lower costs – used components are significantly cheaper than new ones but offer equally high quality.
Ecology – you support recycling and reduce the amount of automotive waste.
Wide selection – in our store, you will find components for the most popular car brands.

How to take care of the exhaust and emission control system?

To ensure the exhaust and emission control system works efficiently for years, it is worth remembering a few rules:

Regularly check the condition of the DPF filter and catalytic converter – their clogging can reduce vehicle performance.
Keep exhaust pipes clean to avoid corrosion.
Avoid short trips, which can cause underheating of the exhaust system and its components. In case of damage or wear of elements, at Global Parts you will find suitable used auto parts that will restore full functionality to your exhaust system.

FAQ

Question	Answer
What is the construction and purpose of exhaust and emission control systems?	Exhaust and emission control systems are a set of elements leading exhaust gases from the engine to the final section of the exhaust. They consist of, among others, the manifold, pipes, silencers, catalytic converter, filters, sensors, and mounting parts. Their task is to discharge gases, reduce noise, and reduce the emission of harmful substances. Individual elements are located in the engine compartment and under the vehicle floor.
What are exhaust and emission control systems used for?	Exhaust and emission control systems are used for the safe discharge of exhaust gases and to improve engine operating conditions. They limit noise, support proper gas flow, and help meet emission standards. Without their proper operation, control unit errors, increased fuel consumption, and power loss may occur. In practice, they also affect the car's refinement and the durability of cooperating components.
What is the construction and function of an exhaust heat shield?	An exhaust heat shield is an element usually made of profiled sheet metal, mounted near hot exhaust parts. It serves to limit the impact of high temperatures on the body floor, hoses, and mounting elements. Its construction includes stiffening ribs and holes for bolts or clips. Depending on the model, it works with chassis tunnels, the catalytic converter, the silencer, or the particulate filter.
How to choose an exhaust part for a specific car?	It is best to compare the OEM number, engine code, body version, and mounting location. It is also worth checking the connection diameter, the number and position of hangers, the type of sensor connector, and whether the car is pre-facelift or post-facelift. For parts responsible for emissions, compliance with the appropriate emission standard also matters.
What symptoms indicate wear of exhaust and emission control elements?	Typical symptoms include louder engine operation, metallic vibrations under the floor, power loss, higher fuel consumption, or an engine error light. In case of leaks, an exhaust smell may appear, and with DPF or catalytic converter problems, also reduced performance. It is worth noting whether the symptoms occur on a cold engine, during acceleration, or during filter regeneration.
Which cooperating elements should be paid attention to during assembly?	During assembly, the condition of gaskets, clamps, flanges, bolts, rubber hangers, and heat shields should be assessed. Hoses and sensors should also be checked, as a damaged connector or connection leak can cause incorrect readings. After replacement, it is important to properly align the entire system so that it does not transmit vibrations to the bodywork.

Summary: exhaust and emission control systems at the Global Parts automotive store

Exhaust systems and emission control systems are the foundations of modern vehicles, combining ecology, efficiency, and driving comfort. By taking care of their technical condition, you ensure reliability and compliance with applicable emission standards. At Global Parts, you will find an offer tailored to cars from brands such as BMW, AUDI, Volkswagen, Mercedes, Mini, and others, and you can base your selection of the right component on the OEM number, engine version, and mounting location. We invite you to contact us – we are here to help you! For more information and interesting facts, we also invite you to visit our automotive blog.

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