BMW Thermostat 11538635689 – Genuine BMW Coolant Thermostat

BMW Part Number: 11538635689
BMW OE Format: 11 53 8 635 689
Product Type: Engine Coolant Thermostat / Thermostat Unit
Opening Temperature: 108°C
Includes: Thermostat housing and gasket on applicable assemblies
System: Engine Cooling System
Brand: Genuine BMW

Product Description

The BMW 11538635689 thermostat is a genuine BMW engine coolant thermostat designed to regulate the flow of coolant through the engine cooling system.

The thermostat controls engine temperature by restricting coolant flow when the engine is cold and opening as operating temperature is reached. This allows the engine to warm up efficiently while helping maintain the correct operating temperature during normal driving. The 11538635689 unit is commonly specified as a 108°C thermostat.

BMW parts catalogues identify 11538635689 as a Thermostat, while some BMW parts suppliers list it as a Thermostat Unit or Thermostat Housing. The assembly can include the housing and gasket depending on the supplied configuration.

Compatible BMW Models

BMW 11538635689 is used on selected applications including:

BMW 1 Series F20/F21
BMW 2 Series F22/F23
BMW 3 Series F30/F31/F34
BMW 4 Series F32/F33/F36
BMW 5 Series F10/F11
BMW X1 E84
BMW X3 F25
BMW X4 F26
BMW X5 F15
BMW Z4 E89

Examples include selected 125i, 220i, 228i, 320i, 328i, 420i, 428i, 520i, 528i, X1 20i/28i, X3 20i/28i, X4 20i/28i, X5 40e and Z4 18i/20i/28i applications. Exact fitment varies according to engine, production date and vehicle specification.

BMW Thermostat Supersessions

BMW has used several earlier thermostat part numbers that have been superseded by 11538635689, including 11537633477, 11538636594 and 11538648791 on applicable vehicles. These supersessions can vary by production period and application.

For this reason, checking the VIN/chassis number is recommended before ordering.

Symptoms of a Faulty BMW Thermostat

A failing thermostat can cause the engine to run either too hot or too cool depending on how the thermostat fails.

Common symptoms may include:

Engine overheating
Engine taking too long to reach operating temperature
Temperature fluctuations
Cooling fan running excessively
Reduced heating performance from the cabin heater
Increased fuel consumption
Engine temperature warning
Check-engine warning in some applications

A thermostat stuck closed can restrict coolant circulation and contribute to overheating, while a thermostat stuck open can prevent the engine from reaching its intended operating temperature.

Why Replace Your BMW Thermostat?

The thermostat is an important part of the BMW cooling system. Installing the correct thermostat helps the engine maintain its intended operating temperature and allows the cooling system to function as designed.

The 11538635689 genuine BMW thermostat is also available as a replacement for earlier BMW thermostat references where BMW specifies it as the applicable superseding part.

BMW Thermostats in Nairobi, Kenya

Bavarian Trading Company Limited supplies genuine and OEM BMW cooling-system parts in Nairobi and across Kenya.

Our shop is located at Adams Arcade, off Ngong Road, Nairobi, and our BMW-focused garage can diagnose cooling-system problems and replace faulty thermostats.

If your BMW is overheating, running too cool or experiencing coolant-temperature problems, we can inspect the cooling system and help identify the correct thermostat.

Buy BMW Thermostat 11538635689

Need a BMW thermostat? Get 11538635689 from Bavarian Trading Company Limited.

Send us your BMW VIN/chassis number and we can confirm whether 11538635689 is the correct thermostat for your vehicle.

We can supply and fit the thermostat at our BMW garage in Nairobi.

📍 Adams Arcade, off Ngong Road, Nairobi
🔧 BMW diagnostics, servicing and repairs
🛒 Genuine & OEM BMW spare parts
🚗 Cooling-system inspection and thermostat replacement

Contact Bavarian Trading Company Limited today for BMW thermostat 11538635689.

Important Fitment Note

BMW thermostat applications vary according to engine, model, production date and cooling-system configuration. Always confirm fitment using your BMW VIN/chassis number before ordering.