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BMW Cooling System Parts & Accessories for BMW 7 Series E38 (1995-2001)

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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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URO Fan Blade - BMW E3X

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T#:373133

Part#: 11521712110

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$ 33.99 USD

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Replace your fragile fan blades before they break and damage your radiator.

Radiator Fan Clutch

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T#:373087

Part#: 11527502804

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$ 91.99 USD

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Keep your engine cool

Cooling Fan Shroud

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T#:377273

Part#: 17101440252

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$ 42.59 USD

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$ 42.59 USD

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The cooling fan shroud is essential to creating the most pull of air flow through your radiator to keep your engine cool.

Coolant Expansion Tank

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T#:362009

Part#: 17111741167

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$ 49.99 USD

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Does not include level sensor and cap

URO Thermostat With Housing - E39 540i, E38 740i (96-98)

For vehicles with production date up to 09/1998

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T#:639573

Part#: 11531437526

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This is a complete assembly including the housing and sealing o-ring.

Transmission Oil Cooler - Priced Each

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T#:568703

Part#: 17217505823

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$ 70.99 USD

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The heat exchanger keeps your engine oil temperature at a safe level. Without it, oil temperatures could sky rocket causing shearing and potentially internal engine component failure.

Aluminum Water Pump Pulley - 104MM

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T#:374330

Part#: 11511736910

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This product was last offered at the strikethrough price on
05-14-2026

$ 25.78 USD

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Direct replacement durable aluminum pulley

URO Radiator Hose - E38, E39

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T#:38094316

Part#: 11531711385

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$ 47.99 USD

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This radiator hose is routed from the lower left of the radiator and goes to the heat exchanger.

Remanufactured Water Pump

For vehicles with production date from 09/1998

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T#:372929

Part#: 11511713266

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$ 98.99 USD

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Equipped with metal impeller for efficient flow and greater durability (OE plastic impellers can shatter and clog cooling system passages with broken pieces) Guaranteed fitment Manufactured to OE dimensions for easy installation and proper pulley alignment Constructed of high-strength alloy and composite materials (where applicable) Quality bearings and seals for long-term reliability Function-tested for performance

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Uro - Thermostat Housing with O-ring - 105C

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T#:3428544

Part#: 11531436386

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$ 57.99 USD

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- Guaranteed fitment - High-flow OE-style design for optimal engine cooling performance - Thermostat housing assembly is manufactured to factory housing dimensions for easy bolt-on installation and reliable hose connections - Includes temperature sensor where applicable - High-quality alloy or composite material is temperature-stable to resist warping or cracking that can lead to coolant leakage - 24 Month Unlimited Mileage Warranty

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URO Coolant Temperature Sensor - BMW M44 M52 M62 M73 M54 S62 S50 S52 ...

Located on the water pump housing

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T#:639497

Part#: 13621703993

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$ 12.99 USD

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URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts. 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 Switch O-Ring

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T#:377077

Part#: 13621433077S

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$ 0.88 USD

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Now you can just replace the o-ring instead of the whole switch

Radiator Mount Support - Upper

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T#:377277

Part#: 17111712911

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$ 1.67 USD

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Secures the upper radiator bracket to core support.

URO Water Pump O-Ring (Small) - BMW M60 M62 S62 M70 S70

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T#:377294

Part#: 11531710055

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$ 1.01 USD

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When it comes time to replace the water pump, be sure to replace all the O-Rings associated with it to ensure that your car stays leak free. If you are experiencing leaking issues, be sure to inspect these rings, as they might have worn down. This specific ring is used when replacing water pump on cooling pipe to the water accumulator. There are two per car.

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Bav Auto Coolant Temperature Sensor - M52/S52, M62, M73, M54, S62 ...

Located on water pump housing

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T#:639828

Part#: 13621703993

Ships on Oct 7, 2026

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This product was last offered at the strikethrough price on
05-03-2026

$ 16.79 USD

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This is the coolant temperature sensor used in many BMW models from the mid-1990s to the mid-2000s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer. This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement. 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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Bav Auto Expansion Tank Cap - E36 E46 E34 E39 E32 E38 E65 X3 X5 Z4 ...

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T#:640208

Part#: 17117639022

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06-03-2026

$ 11.89 USD

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$ 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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Water Temperature Sensor

Located in the water accumilator

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T#:372926

Part#: 12621288158

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$ 6.99 USD

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Replace the sensor to get your gauge working properly again.

Coolant Level Switch - E31 E38 E39 Z8

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T#:20203

Part#: 61318360876

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$ 12.99

This product was last offered at the strikethrough price on
04-10-2026

$ 10.99 USD

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$ 10.99 USD

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This is the radiator coolant level sensor that mounts into the bottom of the cooling system expansion tank. With more than 4,000 European vehicle replacement parts, URO is no stranger to the market. Superior metal stock and extremely strict quality control are at the forefront of URO’s agenda and it shows as they become the OE supplier for more and more car companies every single day.

With more than 4,000 European vehicle replacement parts, URO is no stranger to the market. Superior metal stock and extremely strict quality control are at the forefront of URO’s agenda and it shows as they become the OE supplier for more and more car companies every single day.

This item fits the following BMWs:
1999-2000 E39 BMW 528i 540i
2001-2003 E39 BMW 525i 530i 540i
1995-2001 E38 BMW 740i 740il 750il
1990-1998 E31 BMW 840i 840ci
2000-2003 E52 BMW Z8 Roadster

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Radiator Hose - Lower - E38/E39

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T#:50066847

Part#: 11537505229

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$ 41.99 USD

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Connects from the lower radiator outlet to the thermostat housing and features an integrated port for the coolant temperature sensor.

Coolant Hose

For vehicles with production date up to 09/1998

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T#:373027

Part#: 11531745595

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$ 13.99 USD

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Connects from water pump to top of radiator

Expansion Tank Vent Hose

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T#:373096

Part#: 17111737819

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$ 9.99 USD

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Attaches between expansion tank and top of radiator

Rubber Mount

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T#:362393

Part#: 17111737704

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$ 7.99 USD

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Rubber lower mount for your radiator

Auxiliary Fan Switch

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T#:376847

Part#: 13621433077

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Comes with related o-ring

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