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17111438819KT2 - Automatic Transmission Thermostat Kit

Automatic Transmission Thermostat Kit

Packaged by Turner

T#: 57122955 | Part#: 17111438819KT2

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$93.66

Partial Replacement

Availability:

Available from Supplier

Est. Ship Date:

Ships on Dec 9, 2026

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Product Details

Keeping your E53 X5 automatic transmission cool is essential for longevity and peak performance. The factory transmission thermostat circuit relies on plastic housings and o-ring seals that deteriorate over time. When the transmission thermostat fails or it's mounting assembly cracks, coolant loss follows putting your transmission at risk of overheating under load.

This Automatic Transmission Thermostat Refresh Kit packaged by Turner Motorsport overhauls the complete thermostat assembly beneath the expansion tank. Engineered for BMW drivers who demand absolute reliability, this kit restores crisp temperature control to your transmission cooling circuit and replaces vulnerable plastic components before they leave you stranded.

Features

Complete overhaul kit for the E53 automatic transmission cooling thermostat circuit
Maintains proper fluid temperatures in the transmission oil cooler under high stress
Fixes chronic coolant leaks originating from the mounting plate and water pipe connections
Heavy duty composite construction resists heat degradation and cracking
Seamless snap-in integration with original radiator and expansion tank connections

Prop 65 Warning

Kit Contents

Qty	Description	T#	Part#	Lifetime
1	Expansion Tank Mount	T#362947	17111438819~MTC	YES
1	Vaico Water Connector - Expansion Tank to Trans Oil Cooler - E53 X5	T#595364	17111438820~VAI	NO
1	JL Germany Automatic Transmission Thermostat - E46, E53	T#579866	54441~JLG	YES

Product Q&A

Lifetime Replacement

Some kit components are covered by our Lifetime Replacement Program

Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.

If you have any questions, would like to learn more or are ready to place a replacement claim, click here!

Fits These Cars

MAKE	MODEL	SUBMODEL	ENGINE	Special Fitment Notes
BMW	E53	X5	M54 3.0L	Use vehicle selector to confirm fitment

*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.

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