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BMW Cooling System Parts & Accessories

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 - E82/88 E9X Z4 N52, E9X M3

T#:363985

Part#: 17117562079

In Stock

$ 174.52 USD

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$ 174.52 USD

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Fits both automatic and manual transmission BMWs! 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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OEM Nissens Radiator - Automatic - E46, Z4

T#:362222

Part#: 17119071519

In Stock

$ 173.39

This product was last offered at the strikethrough price on
06-02-2026

$ 166.36 USD

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$ 166.36 USD

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The cooling system is a weak point on any E46. Many cars develop issues in as few as 50,000 miles.

Overheating an inline 6 engine almost always results in large repair bill, and sometimes a warped cylinder head.

Replace yours with a high-quality OEM Nissens radiator to prevent further issues and potential overheating.

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Active Autowerke Sport Fan Clutch - E36 E46

T#:397219

Part#: 14-010

In Stock

5% off MSRP $ 259.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 246.99 USD

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5% off MSRP

$ 259.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 246.99 USD

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When you push your powerplant, thermodynamics push right back. The toll of high performance is higher heat load – and many stock components begin to complain. But Active Autowerke has you covered - this upgraded fan clutch increases viscous coupling of cooling fan blade speed to water pump speed, yielding increased airflow through the radiator for more efficient cooling. A simple, yet wonderful, thing.

This product fits the following BMWs:
1992-1999 E36 323i 325i 328i 330i M3
1998-2006 E46 323i 325i 328i 330i M3

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BMW 525I-635CSI 81- RADIATOR

T#:583907

Part#: 17111468546

In Stock

$ 304.82

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

$ 270.99 USD

Limited Qty Sale

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$ 304.82

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

$ 270.99 USD

Limited Qty Sale

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Radiator - N20 2.0L & N55 3.0L Engine

T#:381279

Part#: 17117618807

In Stock

$ 217.99

This product was last offered at the strikethrough price on
04-21-2026

$ 191.99 USD

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$ 191.99 USD

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Ensure optimal engine cooling performance for your BMW N20 2.0L & N55 3.0L Engines with Turner Motorsport's Nissens Radiator. Designed to withstand the demands of high-performance engines, this replacement radiator from Nissens ensures efficient heat dissipation, keeping your engine at an optimal operating temperature. With a direct fit for easy installation, this radiator is the perfect solution to keep your BMW running smoothly.

Direct replacement for BMW N20 2.0L & N55 3.0L Engines
Ensures efficient heat dissipation for optimal engine cooling
High-quality construction for durability and reliability
Easy installation with direct fit design
Maintains engine performance and longevity

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Auxiliary Fan Assembly

T#:586994

Part#: 64541392913

Back Ordered

$ 191.99 USD

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$ 191.99 USD

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OEM Nissens Radiator - BMW G30 530i 540i, G11 740i

T#:641058

Part#: 17118476010

Ships in 2 Business Days

$ 746.87 USD

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$ 746.87 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 - E90 335d

T#:592144

Part#: 17117794488

Ships in 2 Business Days

$ 326.99

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

$ 289.99 USD

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$ 289.99 USD

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More than likely, you are going to replace the radiator in your vehicle at least once. The joints where the cores meet the end tanks tend to get weak and are the first place to spring a leak. Impacts to the fins themselves can cause holes to form. Corrosion and clogging from the inside can make cooling less than effective and compromise coolant flow. Replace your leaking unit with a factory replacement and get that jug of coolant out of your back seat.

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Nissens Radiator - E36

T#:585074

Part#: 17111469179

Ships in 7 Business Days

$ 233.99 USD

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$ 233.99 USD

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Standard replacement radiator.

Active Autowerke Thermostat Bypass/Delete Tube - S65

T#:2302749

Part#: 14-016

Ships on Sep 22, 2026

$ 141.99 USD

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$ 141.99 USD

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CNC machined coolant/water thermostat bypass tube to improve flow on and off the track. Easy plug and play installation and a durable anodized coating make this a simple and reliable temperature control solution.

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BMW E36 3-SERIES 90-98 -W/O REGULATOR FAN

T#:583898

Part#: 64508364093

Ships in 7 Business Days

$ 242.99 USD

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$ 242.99 USD

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Radiator Fan Housing

T#:592130

Part#: 17117541092

Ships in 2 Business Days

$ 225.99

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

$ 219.99 USD

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$ 219.99 USD

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OEM Nissens Air Conditioning Pusher Fan - E39 BMW 528i 540i M5 (up to...

For vehicles with production date up to 09/1998

T#:591464

Part#: 64548380780

Back Ordered

$ 295.99 USD

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$ 295.99 USD

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This is the fan that turns on when the air conditioning is activated electronically. It’s not driven by the belt and it pushes air through the condenser. If it breaks, it might be an electrical issue that usually occurs in the motor within the fan, as it will fail to engage. There is also a chance that the blades might get damaged as well. No matter how your fan got damaged, be sure to replace it to keep air circulating evenly.

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Active Autowerke Cnc Aftercooler Cooling Kit - F8x S55

T#:5886968

Part#: 15-012

Ships in 4 Business Days

$ 2,849.99 USD

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$ 2,849.99 USD

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BMW's S55 motor is a modern marvel but one weak point, which Active identified is the entire cooling system for the intake which comprises the charge pipe, the aftercooler and the heat exchanger (or radiator). Finally there is a S55 aftercooler kit upgrade that is good enough to carry the Active Autowerke brand. Years of success in developing cars for motorsport has allowed Active to leverage its expertise to the top-mount charge air cooler on the F80 M3, F82 M4 and F87 M2 Competition. This aftercooler was made for the S55 and crafted using only high-grade aluminum to outperform the factory aftercooler in all situations from everyday driving to the toughest racing. The factory cooler was built to support a specific power target and environment. Many of you have increased the performance of the S55 which quickly overwhelms the stock cooler leading to heat soak and higher intake air temperatures which triggers the ECU to downgrade the performance until cooler air returns. Active's focus was not on a mass-market aesthetic add-on but a properly engineered improvement over the existing hardware. Active uses a tube-and-fin core designed specifically for the S55 and included turbulators to maximize the cooling efficiency in as small a package as possible. The end tanks are billet machined aluminum, not cast, folded, or bonded and ensure even distribution of the water throughout the internal aftercooler cores. High precision fittings, CNC machining, and TIG welding throughout ensures the highest quality construction to prevent pressure loss, and the lowest weight, in a bolt-on replacement. But Active also didn’t leave the aesthetics by the wayside as we dip the visible top of the aftercooler in a carbon fiber coating giving your installed cooling system a decidedly top market look to match the improved cooling performance. The Active silicone charge pipes for the F80 M3, F82/F83 M4 and the F87 M2 Competition improve the flow over the stock, compressed plastic pipes. The Active Silicone Charge Pipes allow you to maximize power on your F8X by securing all the boost that your S55 is making. These pipes replace the hot-side pipes leaving the turbos and into the top-mount aftercooler. The stock S55 charge pipes are notorious for developing hairline fractures at their plastic seams. These fractures or cracks are unnoticeable to the naked eye, but under boost pressure they open up leaking the desired charged air into the engine bay, and consequently can rob your S55 of it's full power potential. In addition, these leaks can trigger your S55's turbochargers to work harder to hit and maintain target boost pressure, potentially wearing them out sooner. Active uses silicone in this area because it will not contribute to heat soak and it's easier to mold for the correct clearances. Active uses a 5-layer silicone hose with all needed adapters and stainless hose clamps included. It fits perfectly with our CNC’d top-mount cooler.

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Nissens Radiator - Manual - E83

T#:384279

Part#: 17113403551

Ships in 1-2 days

$ 273.99

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

$ 265.99 USD

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$ 265.99 USD

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For vehicles with manual transmission

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