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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Performance Water Pump & Thermostat Kit - BMW M50 M52
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Packaged by Turner - Corporate Logo
T#:30397440
Part#: 11517527799KT2
In Stock
$ 357.99

This product was last offered at the strikethrough price on
06-15-2026

$ 342.99 USD
Free Shipping on orders $49 and up
$ 342.99 USD
Free Shipping on orders $49 and up

BMW vehicles are known for their robust performance, but the water pump is a notorious weak spot, often needing replacement every 60,000 miles.

During this service, it's wise to also swap out the thermostat to maintain the efficiency of your vehicle's cooling system. Turner Motorsport simplifies this process with our expertly curated Water Pump & Thermostat Replacement Kit.

This premium kit centers around the renowned EMP Stewart high-performance water pump--a favorite among BMW enthusiasts for its exceptional design. Featuring a stainless steel impeller, this pump enhances coolant flow by 20%. Complementing this is a low-temperature 68°C (154.4°F) Mishimoto thermostat, an upgraded aluminum thermostat housing, and Redline Water Wetter coolant additive. Together, these components make for the ultimate cooling system upgrade for your E36, E39, or Z3!

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Basic Cooling System Service Kit - E34 525i M50 2.5L
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Packaged by Turner - Corporate Logo
T#:557231
Part#: E34525BCKT
Ships in 10 Business Days
Sale - Save 10% $ 264.99

This product was last offered at the strikethrough price on
02-27-2026

$ 238.54 USD
Free Shipping
Sale - Save 10%
$ 264.99

This product was last offered at the strikethrough price on
02-27-2026

$ 238.54 USD
Free Shipping

Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

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Thermostat Replacement Kit - E28, E30, E34 M20B25/27
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Packaged by Turner - Corporate Logo
T#:41289770
Part#: 11531730470TKT
Back Ordered
Sale - Save 14% $ 93.99

This product was last offered at the strikethrough price on
06-08-2026

$ 81.18 USD
Free Shipping on orders $49 and up
Sale - Save 14%
$ 93.99

This product was last offered at the strikethrough price on
06-08-2026

$ 81.18 USD
Free Shipping on orders $49 and up
This BMW Thermostat Replacement Kit is the go-to choice for preserving the performance and reliability of your classic M20-powered BMW—keeping your engine running cool and smooth mile after mile.
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Water Pump - E34 530i 540i E32 740i/il
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Packaged by Turner - Corporate Logo
T#:338251
Part#: 11510007042X
Ships in 7 Business Days
Starting at $ 470.99 USD
Free Shipping
Starting at $ 470.99 USD
Free Shipping
Don't take your car's cooling system for granted! One of the biggest weak points is the cooling system. Replacing your waterpump will go a long way for keeping your car on the road and operating properly.

This item fits the following BMWs:
1992-1995 E34 BMW 530i 540i
1992-1994 E32 BMW 740i 740ill
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OEM Nissens Radiator - E34 525i M50 M20 2.5L
For vehicles with a Manual Transmission only
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Nissens - Corporate Logo
T#:588569
Part#: 17111469177
Ships in 5 Business Days
$ 222.99 USD
$ 222.99 USD
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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Nissens - Corporate Logo
T#:586994
Part#: 64541392913
Back Ordered
$ 191.99 USD
Free Shipping
$ 191.99 USD
Free Shipping

Nissens Radiator - E31, E32, E34
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Nissens - Corporate Logo
T#:369502
Part#: 17112242138
In Stock at Vendor
$ 176.67 USD
$ 176.67 USD
Complete new radiator
OEM Nissens Radiator - Automatic Transmission - E34 530i
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Nissens - Corporate Logo
T#:583897
Part#: 17111702453
Ships in 1 Business Day
$ 325.99 USD
$ 325.99 USD

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 - Manual Transmission - E32, E34
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Nissens - Corporate Logo
T#:579947
Part#: 60596A
In Stock at Vendor
$ 262.52 USD
$ 262.52 USD
Replace your leaking radiator to prevent major damage.

OEM Nissens Radiator - E32 735i/iL, E34 535i (Automatic Transmission)...
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Nissens - Corporate Logo
T#:583901
Part#: 17111468080
Ships in 6 Business Days
$ 292.99 USD
$ 292.99 USD
​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 - E31 E32 E34
For vehicles with production date up to 05/94
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Nissens - Corporate Logo
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
$ 232.99 USD
BMW 520 I/ 525 I/ AUT/ AC RADIATOR
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Nissens - Corporate Logo
T#:583900
Part#: 17111468469
Ships in 6 Business Days
$ 283.99 USD
$ 283.99 USD


Radiator
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Nissens - Corporate Logo
T#:554447
Part#: 17111468082
In Stock at Vendor
$ 273.99 USD
$ 273.99 USD