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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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OEM Nissens Radiator - E34 525i M50 M20 2.5L

For vehicles with a Manual Transmission only

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T#:588569

Part#: 17111469177

Ships in 5 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

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T#:586994

Part#: 64541392913

Back Ordered

$ 191.99 USD

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$ 191.99 USD

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Nissens Radiator - E31, E32, E34

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:369502

Part#: 17112242138

In Stock at Vendor

$ 176.67 USD

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$ 176.67 USD

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Complete new radiator

OEM Nissens Radiator - Automatic Transmission - E34 530i

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:583897

Part#: 17111702453

In Stock

$ 325.99 USD

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$ 325.99 USD

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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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Bav Auto Expansion Tank Cap - E36 E46 E34 E39 E32 E38 E65 X3 X5 Z4 ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:640208

Part#: 17117639022

In Stock

Sale - Save 15% $ 13.99

This product was last offered at the strikethrough price on
06-03-2026

$ 11.89 USD

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Sale - Save 15%

$ 13.99

This product was last offered at the strikethrough price on
06-03-2026

$ 11.89 USD

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This radiator expansion tank cap is used most BMW's from 1991-2006. It is a common failure item. When this item fails, it cannot hold pressure which results in your BMW overheating. If you are overhauling your coolant system, now is the time to consider preventative replacing this cap. It is also referred to as the coolant reservoir cap. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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BMW 520 I/ 525 I/ AUT/ AC RADIATOR

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:583900

Part#: 17111468469

Ships in 6 Business Days

$ 283.99 USD

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$ 283.99 USD

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Nissens Radiator - E31 E32 E34

For vehicles with production date up to 05/94

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:596366

Part#: 17112242138

In Stock at Vendor

$ 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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OEM Nissens Radiator - E32 735i/iL, E34 535i (Automatic Transmission)...

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T#:583901

Part#: 17111468080

Ships in 6 Business Days

$ 292.99 USD

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$ 292.99 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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Nissens Radiator - Manual Transmission - E32, E34

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:579947

Part#: 60596A

In Stock at Vendor

$ 262.52 USD

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$ 262.52 USD

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Replace your leaking radiator to prevent major damage.

Radiator

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T#:554447

Part#: 17111468082

In Stock at Vendor

$ 273.99 USD

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$ 273.99 USD

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