BMW Thermostats for BMW 5 Series E39 (1996-2003)

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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 With Housing - 90C
Thermostat With Housing - 90C
For vehicles with a production date from 09/1998
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:598978
Part#: 11531436386
In Stock
Sale - Save 20% $ 93.99

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

$ 75.06 USD
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Sale - Save 20%
$ 93.99

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

$ 75.06 USD
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Add to Wish List
A thermostat that opens sooner promotes better cooling in your vehicle. Running a lower temperature thermostat will keep everything much cooler. Keeping the engine cooler will help reduce and improve the life of the seals in your engine, saving you time and money, while also help increase engine performance. A tune might be required to gain the most from this modification, as well as to get your car's ECU accustomed to seeing lower temperatures.
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Thermostat With Housing
Thermostat With Housing
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:26494584
Part#: 11537509227
In Stock
Sale - Save 18% $ 60.99

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

$ 49.99 USD
Free Shipping on orders $49 and up
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Sale - Save 18%
$ 60.99

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

$ 49.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Thermostat With Housing
Thermostat With Housing
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:582356
Part#: 11537509227
Ships in 3 Business Days
$ 89.99 USD
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$ 89.99 USD
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Stop leaks before they start with this new Thermostat With Housing from Rein.
Rein Thermostat O-Ring (60 X 3.5 mm) - E28 E30 E32 E34 E36 E39 Z3 E23 E24
Rein Thermostat O-Ring (60 X 3.5 mm) - E28 E30 E32 E34 E36 E39 Z3 E23...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:591144
Part#: 11531265084
In Stock
$ 2.05 USD
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$ 2.05 USD
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This O-ring seals the thermostat to the cylinder head.
Rein Thermostat Assembly E38 740iL
Rein Thermostat Assembly E38 740iL
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:34114233
Part#: 11531437526
Ships in 1 Business Day
$ 68.99 USD
Free Shipping on orders $49 and up
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$ 68.99 USD
Free Shipping on orders $49 and up
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Regulates Engine coolant temperature. Comes with aluminum housing, O-ring, and sensor.
Thermostat With Housing - 105C
Thermostat With Housing - 105C
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:15511816
Part#: 11531436386
Ships in 8 Business Days
Sale - Save 4% $ 30.99

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

$ 29.67 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 4%
$ 30.99

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

$ 29.67 USD
Free Shipping on orders $49 and up
Add to Wish List
A thermostat that opens sooner promotes better cooling in your vehicle. Running a lower temperature thermostat will keep everything much cooler. Keeping the engine cooler will help reduce and improve the life of the seals in your engine, saving you time and money, while also help increase engine performance. A tune might be required to gain the most from this modification, as well as to get your car's ECU accustomed to seeing lower temperatures.
Show More Show Less
Bremmen Parts Thermostat Assembly - E38, E39
Bremmen Parts Thermostat Assembly - E38, E39
For vehicles with production date up to 09/1998
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:388457
Part#: 11531437526
Back Ordered
Sale - Save 15% $ 56.99

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

$ 48.44 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 15%
$ 56.99

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

$ 48.44 USD
Free Shipping on orders $49 and up
Add to Wish List
Comes with aluminum housing, o-ring & sensor

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