What is the construction and purpose of automotive electrical relays?

Automotive electrical relays are elements controlling current flow in the vehicle's installation. A typical relay consists of a housing, a coil, power contacts, and pins with a specific layout, and its location is usually in the fuse box or engine compartment. The task of this component is to separate the control circuit from the circuit powering a device with a higher current draw.

What are automotive electrical relays used for?

Relays are used to switch electrical receivers on and off without overloading switches, the ignition switch, or the controller. They enable the operation of systems such as the starter, fuel pump, wipers, radiator fan, or window heating. Without a properly selected relay, the circuit may operate unstably, and connectors and wires are more exposed to overheating.

What is the construction and function of a relay socket?

A relay socket is a part of the installation where the relay is seated and to which power and control wires are routed. It consists of a body and contacts corresponding to the pin layout of a given relay. Its function is to ensure a secure electrical connection, proper seating of the component, and easy removal during diagnostics or replacement.

How to choose a relay for a specific car?

It is best to compare the OEM number, interchangeable numbers, pin layout, installation voltage, and current capacity. It is also worth checking the car brand, engine version, mounting location, and type of electrical box. If the part has a specific housing color or non-standard marking, these features also help avoid mistakes.

What symptoms indicate wear or damage to a relay?

Typical symptoms include no response from the receiver, random switching of the device, excessive heating of the housing, or characteristic clicking without the system working. Sometimes the fault manifests only under load when the contacts are burnt or weakened. In diagnostics, it is also worth checking the fuse, power on the pins, and the condition of the socket.

What should be paid attention to when installing a relay?

Before installation, verify the compliance of pin markings and the direction of seating in the socket. It is also important to clean the contacts, check the wires, and ensure that the circuit has no short circuit or excessive current draw. Proper installation should not require harness modifications if the part has been selected according to the OEM number and vehicle version.

Car electrical relays

At Global Parts, we offer a wide selection of original used car parts, including relays for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. The relays we offer undergo quality control to ensure you receive a top-quality product.

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Mercedes W639 W906 Relay 5-Pin Control Unit 12A Blue A0035420219

PLN 61.95

Free delivery: Jul 29

If paid before 14:00

Part no. A0035420419

Mercedes W177 W205 W247 Relay Fuse Unit Module 4 Pins Black A0035420419

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. A0009828523

Mercedes W164 Suspension Compressor Relay A0009828523

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 1H5951253

Volkswagen Touareg 7L Relay Alternator Alarm Black 4 Pin 12V No 143 1H5951253

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 51888255

Fiat Doblo Mk1 Stilo 192 Diesel Glow Plug Relay Pre-Heating Control ECU 51299012

PLN 89.95

Free delivery: Jul 29

If paid before 14:00

Part no. UM4667730

Mazda 6 GJ NAIS Relay Electrical Unit Module 4 Pin 12V Black UM46-67-730 Set x2

PLN 75.95

Free delivery: Jul 29

If paid before 14:00

Part no. V23134-J59-X431

Mazda 6 GJ TYCO Relay Black Unit Module 4 Pin 12V V23134-J59-X431

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 8K0951253-1

Audi VW Volkswagen Seat Relay 643 Unit Module 4 Pins Set X2 8K0951253

PLN 61.95

Free delivery: Jul 29

If paid before 14:00

Part no. 6G9T-14B192-CA-1

Ford Fiesta Transit Mk7 Relay 4-Pin Black FoMoCo Unit SET X2 6G9T-14B192-CA

PLN 61.95

Free delivery: Jul 29

If paid before 14:00

Part no. 8366282-1

BMW Z1 Z3 E32 E36 E38 E46 X5 E53 Connection Plug Golden Brown Set x2 8366282

PLN 94.95

Free delivery: Jul 29

If paid before 14:00

Part no. 431951253D

Audi TT 8N Relay Unit Module 431951253D

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 141951253B-3

Audi VW Volkswagen Seat Relay Number 53 Unit Module 4 Pins Set Of 2 141951253B

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 46537685

Vauxhall Movano C Radiator Fan Relay Unit Black 46537685

PLN 51.95

Delivery: Jul 29

If paid before 14:00

Part no. 5293147-3

Relay Glow Littlefuse Mega Fuse 250 Amp 5293147

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. DH22-14B192-BA-1

Range Rover Evoque L538 Relay 4-Pin Unit 12V 20A Set x3 DH22-14B192-BA

PLN 66.95

Free delivery: Jul 29

If paid before 14:00

Part no. DH22-14B192-EA-1

Land Rover Discovery Sport L550 Relay 4-Pin 12V 70A Grey Set X4 DH22-14B192-EA

PLN 61.95

Free delivery: Jul 29

If paid before 14:00

Part no. 7N0937503A-1

Audi Q3 8U VW Scirocco Mk3 Relay Bracket Holder Box 7N0937503A

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 2S7T-14B192-AA

Range Rover L322 Black Relay 4-Pin Unit 12V 40A 2S7T-14B192-AA

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 8E0907307C

Audi RS4 B7 4.2 Servotronic Relay Control Unit 8E0907307C

PLN 284.95

Free delivery: Jul 29

If paid before 14:00

Part no. 5M5T-14B192-EA-2

Ford Mondeo Focus Multi Use Grey Relay 12V 70A 4 Pin 5M5T-14B192-EA

PLN 94.95

Free delivery: Jul 29

If paid before 14:00

Part no. A6549001300-1

Mercedes W213 C238 Glow Plug Relay Diesel OM654 Preglow Module A6549001300

PLN 108.95

Free delivery: Jul 29

If paid before 14:00

Part no. 7N0937503A

Audi Q3 8U VW Scirocco Mk3 Relay Bracket Holder Box 7N0937503A

PLN 61.95

Free delivery: Jul 29

If paid before 14:00

Part no. 8K0951253-2

Audi VW Volkswagen Seat Relay 643 Unit Module 4 Pins Set X3 8K0951253

PLN 75.95

Free delivery: Jul 29

If paid before 14:00

Part no. 6Q0907440A

Volkswagen Transporter T5 Black Relay Control Unit 6 Pin 12V 361 6Q0907440A

PLN 113.95

Free delivery: Jul 29

If paid before 14:00

Part no. 99361810400

Porsche Carrera 996 Rear Wiper Motor Relay Unit Black 12V 99361810400

PLN 142.95

Free delivery: Jul 29

If paid before 14:00

Part no. DH22-14B192-CA

Range Rover Evoque L538 Relay 4-Pin Unit 12V 40A Black DH22-14B192-CA

PLN 80.95

Free delivery: Jul 29

If paid before 14:00

Part no. 3M5T-12A343-AA

Ford Focus Mk2 8-Pin Glow Plug Relay 2.0 TDCI G6DA DW10 1343078 3M5T-12A343-AA

PLN 51.95

Delivery: Jul 29

If paid before 14:00

Part no. 46349347

Vauxhall Movano C Glow Plug Preheat Relay Controller Module 2.2 Diesel 46349347

PLN 80.95

Free delivery: Jul 29

If paid before 14:00

Part no. 46355551

Vauxhall Movano C Toyota Proace Max Preheating Box Glow Plug Relay 46355551

PLN 284.95

Free delivery: Jul 29

If paid before 14:00

Part no. 5M5T-14B192-AA

Land Rover Jaguar Ford 4-Pin Multi Use Black Relay 20A 5M5T-14B192-AA

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 5M5T-14B192-CA

Range Rover L538 Ford Transit Custom Relay 4-Pin Black 12V 40A 5M5T-14B192-CA

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. A0005440456

Mercedes W163 Green Relay 2-Pin ML350 112970 3.7 Petrol 245HP A0005440456

PLN 94.95

Free delivery: Jul 29

If paid before 14:00

Part no. 6Q0951253

Volkswagen Polo Mk4 Passat B7 Additional Brake Light Relay 4 Pin Black 6Q0951253

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 6822250

Mini F55 F56 F57 F60 Cooper S SD Electric Fan Relay Module Unit 6822250

PLN 227.95

Free delivery: Jul 29

If paid before 14:00

Part no. 8X0951253A

VW Crafter SY Skoda Fabia Mk4 5 Pin Switch Relay 12V Number 655 8X0951253A

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. DH22-14B192-CA-1

Range Rover Evoque L538 Relay 5-Pin Unit 12V 40A Grey DH22-14B192-CA

PLN 80.95

Free delivery: Jul 29

If paid before 14:00

Part no. 6938213

BMW E90 LCI Door Wiring Loom Wire Cable Harness Front Right O/S 6938213

PLN 75.95

Free delivery: Jul 29

If paid before 14:00

Part no. 5293147-4

Relay Glow Littlefuse Mega Fuse 450 A Amp 5293147

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 3B0951253

Volkswagen Golf 5G Caddy 2K Crafter SY Heated Windscreen Relay 4-Pin 3B0951253

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. A0025427219-1

Mercedes W169 W245 W204 W212 Relay 4-Pin Black Hella SET A0025427219

PLN 61.95

Free delivery: Jul 29

If paid before 14:00

Part no. 4K0907285A

Audi A6 C8 Relay Holder Support Bracket Mount Carrier 4K0907285A

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 1H0911251

Audi Volkswagen Seat Skoda Relay 5 Pin 12V 10A 1H0911251

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 7L0937503-1

Volkswagen Touareg 7L Relay Housing Plate Module Control Unit 7L0937503

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. A7899823500

Mercedes EQA H243 Engine Relay 20A ECU A7899823500

PLN 189.95

Free delivery: Jul 29

If paid before 14:00

Part no. 98661314300

Porsche Boxster S 986 Central Locking Switch Relay 5 Pins 98661314300

PLN 123.95

Free delivery: Jul 29

If paid before 14:00

Part no. 98661313300

Porsche Boxster 986 Rear Windscreen Heating Switch Relay 5 Pins 98661313300

PLN 94.95

Free delivery: Jul 29

If paid before 14:00

Part no. 5M5T-14B192-CA-1

Ford Transit Custom Relay 4-Pin Black 12V 40A FOMOCO Set Pair 5M5T14B192CA

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 0-727-43

DURITE 12V Smart Programmable Voltage Sensitive Split Charge Relay 0-727-43

PLN 180.95

Free delivery: Jul 29

If paid before 14:00

Part no. 5M5T14B192AA-1

Ford Transit Custom Mk8 Relay 4-Pin Black 12V 20A SET X2 5M5T-14B192-AA

PLN 75.95

Free delivery: Jul 29

If paid before 14:00

Part no. 8D0951253-1

Audi A4 B6 B7 B8 Q7 4L A6 C7 A8 D4 Multi Use Relay Unit Module 4 Pins 8D0951253

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 431951253H

Audi TT 8N A4 B5 A6 C5 A8 D2 Relay Control Unit Module 12V 4 Pins 431951253H

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. DH22-14B192-BA

Land Rover Discovery Sport L550 Relay 4-Pin Unit 12V 20A Black DH22-14B192-BA

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 899543000

Porsche Boxster 986 A/C Air Conditioning Relay Control 12V 10A 899543000

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 99661510200

Porsche Boxster 986 Rear Spoiler Control Relay 99661510200

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 7M0951253C-3

VW Volkswagen Audi Seat Skoda Relay Black Control 5 Pin 12V 7M0951253C Set X2

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. DH22-14B192-DA

Land Rover Discovery Sport L550 Relay 5-Pin Unit 12V 40A Black DH22-14B192-DA

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 1J0941385A

Audi TT 8N VW Golf Mk4 Relay Box Cover Housing Panel 1J0941385A

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. V23134-B52-X477

Porsche Cayman 987 Boxster Air Conditioning Control Relay V23134-B52-X477

PLN 165.95

Free delivery: Jul 29

If paid before 14:00

Part no. 0332019103

Porsche Cayman 987 Relay Bosch 12v 0332019103

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 1K0951253-2

VW Volkswagen Audi Seat Relay 449 12V 30A Unit Module 4 Pins 1K0951253 X2

PLN 61.95

Free delivery: Jul 29

If paid before 14:00

Part no. 0332019151-1

Porsche Cayman 987 Kia Sportage Fuel Pump Multifunction Relay Set 0332019151

PLN 94.95

Free delivery: Jul 29

If paid before 14:00

Part no. 4H0951253A-1

Seat Skoda Audi VW Polo Multi Use Control Relay 4 Pin 645 4H0951253A SET X2

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. AH42-14B192-AA

Land Rover Freelandr L359 Relay 4-Pin Black 12V 20A Unit AH42-14B192-AA

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 5M5T-14B192-DA

Land Rover Freelander L359 Relay 4-Pin Black 12V 40A FOMOCO 5M5T-14B192-DA

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 5M5T-14B192-BA

Land Rover Discovery 4 L319 Multi Use Control Module Relay 5M5T-14B192-BA Black

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. BJ32-14B192-CA

Range Rover Evoque L538 Brown Relay 40 AMP BJ32-14B192-CA V23134-B152-X514

PLN 66.95

Free delivery: Jul 29

If paid before 14:00

Part no. A0035420019

Mercedes W204 Battery Relay Fuse Control Unit Module A0035420019

PLN 303.95

Free delivery: Jul 29

If paid before 14:00

Part no. DH22-14B192-EA

Land Rover Discovery Sport L550 Relay 4-Pin Unit 12V 70A Grey DH22-14B192-EA

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 141951253B-4

Audi VW Volkswagen Seat Relay Number 53 Unit Module 4 Pins Set Of 4 141951253B

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. A0019820823

Mercedes Sprinter W907 4-Pin Relay V23074-H1605-X123 A0019820823

PLN 94.95

Free delivery: Jul 29

If paid before 14:00

Part no. A1695458140

Mercedes W169 W245 Relay Control Unit Bracket Mount Holder Cover A1695458140

PLN 66.95

Free delivery: Jul 29

If paid before 14:00

Part no. 443937105A

VW Volkswagen Audi Skoda Seat Little Fuse Amp 30A 12V 443937105A

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 191906383C

Audi VW Volkswagen Seat Relay Unit Module 4 Pins 191906383C

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 6R0919433

VW Volkswagen Audi Seat Skoda Glow Plug Relay Unit Black 505 7 Pins 6R0919433

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 141951253B-1

VW Volkswagen Audi Seat Skoda Relay Unit 4 Pins 12V 40A 141951253B

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 6901469-3

Relay BMW E60 E87 E90 F10 F30 4 Pin Tyco Set Black 6901469

PLN 61.95

Free delivery: Jul 29

If paid before 14:00

Part no. 8353447

BMW E36 E38 Relay Two Pole Make Contact 8353447

PLN 46.95

Delivery: Jul 29 – 30

If paid before 14:00

Part no. A0009822523

Mercedes W156 W242 W246 W447 Relay 4-Pin Black Hella A0009822523

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 1K0951253A

VW Audi Seat Skoda Glow Plug Relay Unit Engine Supply Black 4 Pins 1K0951253A

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. A0025427219

Mercedes W169 W245 W204 W212 Relay 4-Pin Black Hella A0025427219

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. A0009828223

Mercedes W213 Power Relay 4 Pin 12V Hella A0009828223

PLN 47.95

Delivery: Jul 29

If paid before 14:00

Part no. A0035423019

Power Relay Control Mercedes W176 W246 Module 4 Pin 12V 20A A0035423019

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 8507398

Glow Bracket BMW E60 E87 LCI E90 E91 E92 F10 F11 N47 Diesel Relay Plug 8507398

PLN 61.95

Free delivery: Jul 29

If paid before 14:00

Part no. A0009821923

Mercedes W205 Interior Trunk Fuse Box Automotive Pink Relay A0009821923 Red

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. A0005459812

Mercedes Vito W447 W213 OM654 Power Distribution Relay Unit Module A0005459812

PLN 85.95

Free delivery: Jul 29

If paid before 14:00

Part no. A0035421019

Relay Mercedes C117 GLA X156 ML W166 W176 W246 5 Pins Yellow A0035421019

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 9353066

BMW F20 F21 F30 F31 Relay Cover Electric Fan Relay Cap 9353066

PLN 47.95

Delivery: Jul 29

If paid before 14:00

Part no. A0009827723

Fuse Relay Mercedes W176 W204 W246 4-Pin Unit Black Hella A0009827723

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. A0035420219

Relay Mercedes W639 W906 5-Pin Black 12A A0035420219

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. A2469052602

Dashboard Panel Mercedes W176 W246 Switch Dynamic Select Start/Stop A2469057902

PLN 113.95

Free delivery: Jul 29

If paid before 14:00

Part no. A0035422319

Mercedes W176 W246 Relay Battery Decoupling 12V A0035422319

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 4H0951253

Audi A3 8P Multi Use Control Module Relay 4 Pin Light Green Unit 4H0951253

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. A0009828323

Mercedes W176 W246 Power Relay Control Module 5 Pin 12V A0009828323

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. A0025428019

Relay Mercedes W176 W246 4-Pin Black Hella 12V A0025428019

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. 7M0951253C-1

VW Volkswagen T5 Audi Seat Skoda Relay Black Control Unit 5 Pin 12V 7M0951253C

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. 1K0951253

VW Volkswagen Audi Seat Relay 449 Unit Module 4 Pins 1K0951253

PLN 46.95

Delivery: Jul 29

If paid before 14:00

Part no. A0015426519

Mercedes C140 Brake Pump Relay Electrical Fuse Module Control Unit A0015426519

PLN 42.95

Delivery: Jul 29

If paid before 14:00

Part no. A0009821923-1

Mercedes W205 Interior Trunk Fuse Box Automotive Pink Relays Set A0009821923

PLN 94.95

Free delivery: Jul 29

If paid before 14:00

Part no. A0025428819-1

Mercedes W176 W246 Relay Current 4 Pin 12V Hella A0025428819 Set x2

PLN 42.95

Delivery: Jul 29

If paid before 14:00

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