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Transmission Cooler

A transmission cooler is designed to keep fluids at a nominal temperature during periods of heavy use, or high heat. If yours is leaking, replace it now to prevent fluid loss and catastrophic failure.

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Cohline Transmission Cooling Line - Automatic Transmission - Inlet fr...

T#:19546

Part#: 17221707538

Ships in 2 Business Days

$ 176.47

This product was last offered at the strikethrough price on
05-11-2026

$ 161.12 USD

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$ 161.12 USD

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OIL COOLING PIPE INLET 17221707538 Manufactured by Cohline

Fits BMW Engines including:
M10,M20,M30

Automatic Transmission Thermostat Kit

T#:56254893

Part#: 17111437362KT2

In Stock

$ 75.13 USD

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$ 75.13 USD

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We built this Turner Motorsport Cooling Overhaul Kit to hit the key failure points around your automatic transmission heat exchanger and expansion tank mounting setup without breaking the bank.

Genuine Mini Oil Cooler - W11 / N12 / N14 / N16 / N18

T#:51395

Part#: 24117551091

In Stock

8% off MSRP $ 453.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 416.99 USD

Limited Qty Sale

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8% off MSRP

$ 453.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 416.99 USD

Limited Qty Sale

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Ensure efficient transmission cooling with this round oil cooler designed for mounting on top of the automatic transmission housing in BMW models. It forms a vital part of the transmission fluid cooling system, effectively cooling the transmission oil. Ideal for resolving coolant leaks associated with automatic transmissions.

Benefits:

Efficient cooling for transmission fluid
Resolves coolant leaks in automatic transmissions
Compatible with GA6F21WA auto transmission

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OEM Nissens Automatic Transmission Oil Cooler - E65/66 760i/Li ...

T#:641066

Part#: 17217541058

Ships in 7 Business Days

$ 124.99 USD

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$ 124.99 USD

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The oil cooler/heat exchanger for the automatic transmission is one of the most overlooked sections of the E90 335d cooling system. The cooler (heat exchanger) is a part of the overall cooling system and uses coolant circulated from the regular cooling system to cool the transmission oil running through this small cooling block. We recommend servicing or cleaning the heat exchanger along with any cooling system overhaul. Or if you're having transmission faults (especially for temperature) you may want to clean the transmission cooler anyway. Replacing or cleaning the heat exchanger components could lead to better shifting of the automatic as the cooler itself can become clogged. If you're experiencing harder or hesitating shifts, and the internal transmission temperature is rising without being regulated, the components in this system are the likely cause. Staying on top of the cooling needs of the transmission will help prevent a very costly transmission repair in the future.

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