Thermostat BMW E60 E61 E63 E65 E87 E90 E91 E93 N52 Water Pump Unit 7549476

Thermostat BMW E60 E61 E63 E65 E87 E90 E91 E93 N52 Water Pump Unit is an original cooling system component from the Thermostats and housings category, designed for N52 petrol engines in popular BMW 5, 6, 7, 1, and 3 series models. This used OEM component ensures factory-fit, predictable operating parameters, and stable cooperation with the electric water pump, which translates into a safe operating temperature for the engine unit.

Specifications and technical data

• SKU: 7549476-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7549476
• Substitutable numbers: 11537549476, 7549476, 11537544788, 7544788, 11537536655, 7536655
• Category: Thermostats & Housings

Purpose and function in the cooling system

The water pump thermostat in the N52 engine is responsible for precise control of coolant circulation between the engine block and the radiator. A properly functioning component:

• maintains the optimal engine operating temperature under various load conditions,
• works in conjunction with the electric water pump and the engine control unit,
• reduces the risk of engine overheating,
• accelerates engine warm-up after a cold start, which contributes to lower fuel consumption.

Thanks to its OEM design, the thermostat is properly calibrated to the operating characteristics of the N52 engine, which is important for both the durability of the unit and the stability of operating parameters.

Compatibility with BMW models

The presented thermostat is intended for use in N52 engines installed in selected generations of the BMW 5 series (E60, E61), 6 series (E63), 7 series (E65), and 1 and 3 series (E87, E90, E91, E93). This means it can be used in a wide range of body styles – from sedans and estates to coupes and convertibles – while maintaining the factory installation standard.

Before purchasing, it is recommended to verify compatibility with the specific engine version and vehicle year based on the VIN number and BMW catalog data to ensure full mechanical and electrical compatibility.

OEM component characteristics

As an original BMW part, the water pump thermostat has been designed for long-term cooperation with the cooling system and control electronics. Key advantages include:

• factory fit for connectors, hoses, and mounts in the N52 engine,
• preservation of the original fluid circulation opening and closing characteristics,
• consistency with the temperature maps stored in the engine control unit,
• reduced risk of leaks due to dimensional compliance with the housing and seals.

The used OEM component represents a reasonable compromise between cost and maintaining parameters close to factory specifications, which is important when servicing older BMW models with the N52 engine.

Condition and installation aspects

The offered thermostat comes from dismantling and is marked as used, which allows for an economical repair of the cooling system while maintaining the manufacturer's original specifications. Before installation, a standard service procedure is recommended, including checking the tightness of connections, the condition of hoses, and proper bleeding of the cooling system after replacement.

Due to the OEM design, the installation process is similar to the factory one – without the need for system modifications or additional adapters, which facilitates workshop work and reduces vehicle downtime.

Benefits of using an original BMW thermostat

Using an original water pump thermostat in the N52 engine allows for maintaining stable operating conditions for the engine unit, which translates into:

• lower risk of overheating and associated costly repairs,
• proper cooperation with the electric water pump and control system,
• maintenance of factory performance parameters and fuel consumption,
• better protection of internal engine components against excessive thermal stress.

This solution is especially recommended for users who want to maintain consistency with the factory BMW specification and avoid problems resulting from the use of replacements with uncertain characteristics.

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 thermostat housings, connectors, or additional flow control modules, check the available parts in the BMW Thermostats and housings category.

For drivers interested in optimizing service costs, it is also worth reading practical tips on economical vehicle operation – especially in the context of choosing OEM parts and replacements – which you will find in the article Economical operation of a Ford – where to look for the biggest savings in mechanical and body repairs.