Description

MAHLE Engine Coolant Thermostat (w/ Housing) TM 21 103 – For BMW Vehicles

Manufacturer Part Number: TM 21 103

Product Overview

The MAHLE Engine Coolant Thermostat (w/ Housing) TM 21 103 is a premium-grade component essential for maintaining optimal engine temperature in various BMW models. Engineered to OEM standards, this thermostat is designed to provide reliable performance, ensuring that your engine operates within the correct temperature range. By regulating the flow of coolant, it helps prevent overheating and promotes efficient engine function.

Your engine coolant thermostat sits between the engine and the radiator, blocking the flow of coolant until the engine reaches the ideal operating temperature. Once warm, the thermostat opens to allow coolant circulation, ensuring your vehicle runs efficiently. If the thermostat fails, it can lead to overheating or an underperforming engine, making timely replacement crucial.

Vehicle Compatibility

This part fits some of the popular models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility.

• BMW 535i, 3.0L6, 2010-2017
• BMW 535i GT, 3.0L6, 2010-2017
• BMW 535i xDrive, 3.0L6, 2010-2017
• BMW 640i xDrive, 3.0L6, 2014-2017
• BMW 640i xDrive Gran Coupe, 3.0L6, 2014-2017
• BMW 740i, 3.0L6, 2014-2017
• BMW ActiveHybrid 5, 3.0L6, 2012-2017

Cross Reference Numbers

• BMW: 11 53 7 601 159
• BMW: 11537601159
• MAHLE Original: TM 21 103
• MAHLE Original: TM21103
• Gates: 34781
• Stant: 49602

Why Shop at our website?

Since 2000, our website has been a trusted destination for European car owners looking for reliable parts at great prices. Here’s why customers choose us:

• Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
• Fitment Confidence: Our accurate cataloging ensures you get the right part the first time.
• Fast, Reliable Shipping: Orders ship quickly from our U.S.-based warehouses.
• Transparent Pricing: Competitive prices with no hidden fees or surprise charges.
• Established Trust: Serving the European auto community since 2000.

Frequently Asked Questions

What does this part do?

The engine coolant thermostat regulates the flow of coolant to maintain the engine at its optimal operating temperature. It prevents the engine from overheating by blocking coolant flow until the engine reaches the required temperature, ensuring efficient engine performance.

What vehicles is this part compatible with?

This thermostat is compatible with various BMW models including the 535i, 535i GT, and 740i from the years 2010 to 2017. For precise compatibility, please use the vehicle selector tool above.

What are common signs this part may need replacement?

Common indications of a failing thermostat include engine overheating, coolant leaks, or erratic temperature readings on the dashboard. If you notice your engine is not warming up properly or is running cooler than normal, it’s time to consider a replacement.

Are there any DTC (Diagnostic Trouble Codes) associated with this part?

While specific DTC codes can vary, common codes related to coolant thermostat issues include P0128 (Coolant Thermostat Function) and P0118 (Engine Coolant Temperature Circuit High). It is advisable to consult professional repair documentation or experts for accurate diagnosis and troubleshooting.

Specification

• • eEuroparts SKU : 844246
  • Weight : 0.9 lbs
  • Dimensions (L x W x H) : 4.687 x 6.25 x 7.5 in
  • Manufacturer Part # : TM 21 103
• Brand : MAHLE
• Manufacturer : MAHLE
• MPN : TM 21 103
• Part Type : Engine Coolant Thermostat
• OE Part Numbers : 11 53 8 671 516, 11538671516, 11 53 7 601 159, 11537601159
• Cross Reference Numbers : TM21103, 828-217, 828217, 49602, 34781
• Features : Gasket Or Seal Included : No
  Item Grade : OEM
  Start to Open Temperature : 103.0
  Type : Map-controlled thermostat

• Fitment
  • Fitment Type : Vehicle Specific