BMW E46 E87 E90 116i 316i Petrol N45 N45N Thermostat Housing 7500597

BMW E46 E87 E90 116i 316i Petrol N45 N45N Thermostat Housing is an original cooling system component from the Thermostats and housings category, designed for BMW 1 and 3 series petrol engines. It ensures stable temperature control of the power unit, which translates into proper engine operation, optimal performance, and reduced fuel consumption. Thanks to its factory OEM design, it is perfectly matched to the specific requirements of N45 and N45N engines.

Specifications and technical data

• SKU: 7500597-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7500597
• Substitutable numbers: 11517500597, 7500597, 11517572859, 7572859, 75515694490533, 11517506576, 7506576
• Fuel type: Petrol
• Category: Thermostats & Housings

Purpose and function in the cooling system

The presented thermostat is a component that controls the flow of coolant in BMW petrol engines, allowing for the maintenance of a stable operating temperature for the power unit. A properly functioning thermostat:

• accelerates the achievement of operating temperature after startup,
• reduces the risk of engine overheating under heavy load,
• supports the maintenance of proper combustion characteristics in a petrol engine,
• positively affects the durability of mechanical components and seals.

Due to its adaptation to the specific generation of N45/N45N power units, the thermostat works with the factory engine management system, maintaining the parameters specified by the manufacturer.

Construction, fitment, and installation

The thermostat belongs to the Thermostats and housings group, meaning it is designed as a component integrated with the engine's cooling system. The OEM construction ensures:

• proper positioning of the connectors relative to the cooling hoses,
• compatibility with factory mounts in the engine bay,
• cooperation with the original temperature sensor (if present in the given variant),
• a tight connection to the engine block or cylinder head using the provided seals.

As a result, installation is predictable for the mechanic, without the need for modifications or fitting universal parts. Original fitment reduces the risk of leaks and issues with bleeding the cooling system.

Operating characteristics in a petrol engine

The thermostat is designed for units powered by petrol, which is significant for the thermal characteristics of the engine. In such units, it is crucial to:

• maintain a stable operating temperature for the correct fuel-air mixture,
• ensure proper conditions for the ignition system,
• limit the phenomenon of excessive mixture enrichment when the engine is cold.

A properly functioning thermostat therefore supports not only the mechanical protection of the engine but also the stability of the engine control unit parameters, which translates into predictable performance and smooth engine operation.

Condition, origin, and benefits of choosing OEM parts

The offered item is a BMW part from the OEM group, which means it was designed for specific models and engine variants, and its geometry and opening characteristics are consistent with the vehicle manufacturer's specifications. As a used part, the thermostat is an attractive cost-effective solution compared to new replacements, while maintaining the factory fitment and design intended for the given engine.

For users considering the choice between new and used cooling system components, comparative material may be helpful – more information can be found in the article New or used? A comparison of costs and quality of car parts, where differences in quality, durability, and cost-effectiveness of the purchase are discussed.

Expanding BMW cooling system maintenance

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as additional thermostats, housings, or connectors, check out the available parts in the BMW Thermostats and housings category.