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BMW Thermostats

BMW thermostats are known to fail, but luckily they typically fail wide open - meaning that your car can still cool. We offer thermostats from various OE suppliers we trust along with upgraded motorsport specific thermostats where applicable to make sure your BMW stays cool on track.
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Thermostat Installation Kit with Thermostat - N54, N55, S55
Thermostat Installation Kit with Thermostat - N54, N55, S55
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:55353595
Part#: OTN54.T85KT3
In Stock
New Item
$ 390.23 USD
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$ 390.23 USD
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High oil temperatures are the ultimate enemy of your engine's longevity and performance. If you want to keep pushing your BMW to the limit you need to manage the heat.
N52 ECS Cooling System Refresh Kit - E8x E9x
N52 ECS Cooling System Refresh Kit - E8x E9x
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:59440849
Part#: TWTRPMPPIEBRPRKT
In Stock
New Item
$ 665.99 USD
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$ 665.99 USD
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Be sure your cooling system is up to the task
Water Pump And Thermostat Kit with Coolant
Water Pump And Thermostat Kit with Coolant
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:55965857
Part#: 11517604027KT3
Ships on Nov 11, 2026
New Item
$ 493.39 USD
Free Shipping on orders $49 and up
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$ 493.39 USD
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Engineered to OE standards, this comprehensive cooling system package integrates the water pump, aluminum thermostat assembly, critical replacement hardware, and factory specified fluid into a single kit.
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Automatic Transmission Thermostat Kit
Automatic Transmission Thermostat Kit
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:57122955
Part#: 17111438819KT2
Back Ordered
New Item
Sale - Save 2% $ 93.99

This product was last offered at the strikethrough price on
10-19-2026

$ 91.86 USD
Free Shipping on orders $49 and up
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Sale - Save 2%
$ 93.99

This product was last offered at the strikethrough price on
10-19-2026

$ 91.86 USD
Free Shipping on orders $49 and up
Add to Wish List
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.
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Coolant Thermostat
Coolant Thermostat
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:55785651
Part#: 17112249366
In Stock
New Item
$ 25.99 USD
Free Shipping on orders $49 and up
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$ 25.99 USD
Free Shipping on orders $49 and up
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The URO Parts replacement coolant thermostat is a cost-effective, high-quality solution to get your cooling system back to factory-spec operational standards.

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