BMW Cooling System Parts & Accessories for BMW 5 Series E34 (1987-1995)

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The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

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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 2 Business Days
$ 74.00

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

$ 61.49 USD
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$ 61.49 USD
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Includes sealing o-ring
OEM Nissens Radiator - E34 525i M50 M20 2.5L
OEM Nissens Radiator - E34 525i M50 M20 2.5L
For vehicles with a Manual Transmission only
Nissens - Corporate Logo
T#:588569
Part#: 17111469177
Ships in 6 Business Days
$ 222.99 USD
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$ 222.99 USD
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This radiator is made by Nissens, an original equipment supplier to BMW. The cooling system is a weak point on most BMWs, causing many BMWs to develop issues in as few as 50,000 miles. Overheating your engine can and usually will result in large repair bills and sometimes a warps the cylinder head(s), requiring intensive repair or full replacement. Prevent potential failure by replacing your radiator early, keeping your BMW happy and cool. This is the brand we use exclusively on our own BMWs, and think you should as well! As a leading source of high-performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!
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Auxiliary Fan Assembly
Auxiliary Fan Assembly
Nissens - Corporate Logo
T#:586994
Part#: 64541392913
Ships in 7 Business Days
$ 191.99 USD
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$ 191.99 USD
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OEM Nissens Radiator - Automatic Transmission - E34 530i
OEM Nissens Radiator - Automatic Transmission - E34 530i
Nissens - Corporate Logo
T#:583897
Part#: 17111702453
In Stock
$ 325.99

This product was last offered at the strikethrough price on
09-07-2026

$ 268.99 USD
Limited Qty Sale
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$ 325.99

This product was last offered at the strikethrough price on
09-07-2026

$ 268.99 USD
Limited Qty Sale
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Replacement radiator for all E34 530i with M60 V8 engine. This radiator is made by Nissens, an original equipment supplier to BMW. This is the brand we use exclusively on our own 5 series BMWs, and think you should as well.

As a leading source of high-performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

This item fits the following BMWs: 1994-1995 E34 BMW 530i - Automatic Transmission 6/1994-1995 E34 BMW 530i - Manual Transmission

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Nissens Radiator - E31, E32, E34
Nissens Radiator - E31, E32, E34
Nissens - Corporate Logo
T#:369502
Part#: 17112242138
Ships in 2 Business Days
$ 176.67 USD
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$ 176.67 USD
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Complete new radiator
Mahle-Behr Thermostat - 92C - E34, E36, E39
Mahle-Behr Thermostat - 92C - E34, E36, E39
Mahle - Corporate Logo
T#:12476
Part#: 11537511083
In Stock
$ 30.99 USD
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$ 30.99 USD
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OEM BMW THERMOSTAT:115040
Thermostat - 80°C
Thermostat - 80°C
Mahle - Corporate Logo
T#:594727
Part#: 11531713040
Ships on Oct 26, 2026
$ 35.99 USD
Free Shipping on orders $49 and up
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$ 35.99 USD
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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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Coolant Temperature Sensor - E36, E34, E32, E38, E31
Coolant Temperature Sensor - E36, E34, E32, E38, E31
FAE - Corporate Logo
T#:7172
Part#: 12621747281
In Stock
$ 13.99 USD
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$ 13.99 USD
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This is the engine coolant temperature sensor that is mounted into the cylinder head.
Nissens Radiator - E31 E32 E34
Nissens Radiator - E31 E32 E34
For vehicles with production date up to 05/94
Nissens - Corporate Logo
T#:596366
Part#: 17112242138
Ships in 2 Business Days
$ 239.99

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

$ 232.99 USD
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$ 232.99 USD
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Nissens Radiator - Manual Transmission - E32, E34
Nissens Radiator - Manual Transmission - E32, E34
Nissens - Corporate Logo
T#:579947
Part#: 60596A
Ships in 2 Business Days
$ 262.52

This product was last offered at the strikethrough price on
07-15-2026

$ 242.26 USD
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$ 242.26 USD
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Replace your leaking radiator to prevent major damage.
BMW 520 I/ 525 I/ AUT/ AC RADIATOR
BMW 520 I/ 525 I/ AUT/ AC RADIATOR
Nissens - Corporate Logo
T#:583900
Part#: 17111468469
Ships in 7 Business Days
$ 283.99 USD
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$ 283.99 USD
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OEM Nissens Radiator - E32 735i/iL, E34 535i (Automatic Transmission)
OEM Nissens Radiator - E32 735i/iL, E34 535i (Automatic Transmission)...
Nissens - Corporate Logo
T#:583901
Part#: 17111468080
Back Ordered
$ 292.99 USD
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$ 292.99 USD
Add to Wish List
​This radiator is made by Nissens, an original equipment supplier to BMW. The cooling system is a weak point on most BMWs, causing many BMWs to develop issues in as few as 50,000 miles. Overheating your engine can and usually will result in large repair bills and sometimes a warps the cylinder head(s), requiring intensive repair or full replacement. Prevent potential failure by replacing your radiator early, keeping your BMW happy and cool. This is the brand we use exclusively on our own BMWs, and think you should as well! As a leading source of high-performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!
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Radiator
Radiator
Nissens - Corporate Logo
T#:554447
Part#: 17111468082
Ships in 2 Business Days
$ 273.99 USD
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$ 273.99 USD
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FAE Water Temperature Sensor - E31, E32, E34, E38
FAE Water Temperature Sensor - E31, E32, E34, E38
Located in the water accumilator Located in the thermostat housing. For vehicles with electronic engine-power requlation
FAE - Corporate Logo
T#:7171
Part#: 12621288158
Ships on Nov 2, 2026
$ 16.99 USD
Free Shipping on orders $49 and up
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$ 16.99 USD
Free Shipping on orders $49 and up
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ENGINE ELECTRICAL TEMPERATURE SENSOR, WATER 12621288158

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