Mahle BMW Thermostats for BMW 5 Series E34 (1987-1995)

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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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Mahle-Behr Thermostat - 79º C - E34, E39, E52
Mahle-Behr Thermostat - 79º C - E34, E39, E52
Mahle - Corporate Logo
T#:341209
Part#: 11537835558
Ships in 1 Business Day
$ 74.00

This product was last offered at the strikethrough price on
06-05-2026

$ 61.49 USD
Free Shipping on orders $49 and up
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$ 61.49 USD
Free Shipping on orders $49 and up
Add to Wish List
Includes sealing o-ring
Mahle-Behr Thermostat - 92C - E34, E36, E39
Mahle-Behr Thermostat - 92C - E34, E36, E39
Mahle - Corporate Logo
T#:12476
Part#: 11537511083
Ships in 8 Business Days
$ 29.99

This product was last offered at the strikethrough price on
05-22-2026

$ 27.65 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 27.65 USD
Free Shipping on orders $49 and up
Add to Wish List
OEM BMW THERMOSTAT:115040
Thermostat - 80°C
Thermostat - 80°C
Mahle - Corporate Logo
T#:594727
Part#: 11531713040
Ships on Sep 16, 2026
$ 35.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 35.99 USD
Free Shipping on orders $49 and up
Add to Wish List
The thermostat on your vehicle controls the flow of coolant based on temperature. When you just start your engine, the thermostat remains closed to accelerate the warm up process. After a few minutes, it opens up to allow the warm fluid to flow. If your vehicle is overheating but not blowing warm air from the heater, the problem is more than likely your thermostat.
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