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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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Transmission Oil Cooler
Transmission Oil Cooler
Bremmen Parts - Corporate Logo
T#:8741205
Part#: 17217551647
Special Order: No Guaranteed ETA
Sale - Save 11% $ 109.99

This product was last offered at the strikethrough price on
05-03-2026

$ 98.22 USD
Free Shipping on orders $49 and up
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Sale - Save 11%
$ 109.99

This product was last offered at the strikethrough price on
05-03-2026

$ 98.22 USD
Free Shipping on orders $49 and up
Add to Wish List
The transmission oil cooler allows fluid to pass through the core, dropping the temperature of the fluid before it returns to the transmission. This prolongs fluid life and viscosity, as well as providing a cooler fluid to drop transmission temperatures which can be vital to the life of a transmission.
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Automatic Transmission Thermostat Kit
Automatic Transmission Thermostat Kit
Packaged by Turner - Corporate Logo
T#:56254893
Part#: 17111437362KT2
In Stock
New Item
$ 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.
Transmission Oil Cooler
Transmission Oil Cooler
Bremmen Parts - Corporate Logo
T#:8741206
Part#: 17217638582
In Stock
Sale - Save 22% $ 80.99

This product was last offered at the strikethrough price on
05-03-2026

$ 63.19 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 22%
$ 80.99

This product was last offered at the strikethrough price on
05-03-2026

$ 63.19 USD
Free Shipping on orders $49 and up
Add to Wish List
The transmission oil cooler allows fluid to pass through the core, dropping the temperature of the fluid before it returns to the transmission. This prolongs fluid life and viscosity, as well as providing a cooler fluid to drop transmission temperatures which can be vital to the life of a transmission.
Show More Show Less
Victor Reinz Sealing O-Ring - E23, E24, E28, E30, E34, E36, E38, E39
Victor Reinz Sealing O-Ring - E23, E24, E28, E30, E34, E36, E38, E39 ...
Victor Reinz - Corporate Logo
T#:369946
Part#: 17211742636
Ships in 1 Business Day
$ 2.03 USD
Free Shipping on orders $49 and up
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$ 2.03 USD
Free Shipping on orders $49 and up
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10,82x1,78
Victor Reinz O-Ring - E12, E21, E23, E24, E28, E3, E30, E31, E32, E34
Victor Reinz O-Ring - E12, E21, E23, E24, E28, E3, E30, E31, E32, E34...
Victor Reinz - Corporate Logo
T#:375905
Part#: 17211742635
In Stock at Vendor
$ 3.99

This product was last offered at the strikethrough price on
05-07-2026

$ 2.99 USD
Free Shipping on orders $49 and up
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$ 2.99 USD
Free Shipping on orders $49 and up
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9.25x1.78/FPM
OEM Nissens Automatic Transmission Oil Cooler - E90 335d M57 3.0L
OEM Nissens Automatic Transmission Oil Cooler - E90 335d M57 3.0L ...
Nissens - Corporate Logo
T#:641065
Part#: 17217529499
Ships in 6 Business Days
$ 282.99 USD
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$ 282.99 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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OEM Nissens Automatic Transmission Oil Cooler - E65/66 760i/Li
OEM Nissens Automatic Transmission Oil Cooler - E65/66 760i/Li ...
Nissens - Corporate Logo
T#:641066
Part#: 17217541058
Ships in 6 Business Days
$ 124.99 USD
Free Shipping
Add to Wish List
$ 124.99 USD
Free Shipping
Add to Wish List
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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