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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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Water Pump - E39 540i E38 740i/il E53 X5 4.4i 4.6is

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T#:348558

Part#: 11510393336DK

Ships in 3 Business Days

Starting at $ 192.98 USD

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Starting at $ 192.98 USD

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Don't take your car's cooling system for granted!One of the biggest weak points is the cooling system. Replacing your water pump will go a long way for keeping your car on the road and operating properly. This water pump fits BMW 1999-2001 E38 740i/740iL, 1999-2003 E39 540i, 1999-2003 E53 X5 4.4i and 4.6is with M62TU 4.4L (4.6L for the 4.6is) engine.

Choose from a water pump with a metal or composite impeller.
This water pump comes complete with housing profile gasket and o-rings.

This item fits the following BMWs:
1999-2003 E39 BMW 540i 540i touring
1999-2001 E38 BMW 740i 740il
2000-2003 E53 BMW X5 4.4i X5 4.6is
2000-2003 E52 BMW Z8 Alpina

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Complete Cooling System Overhaul Package - 1999-2003 E39 540i, 1999-2...

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T#:338704

Part#: TMS14417

Ships on Aug 19, 2026

Sale - Save 4% $ 773.99

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

Starting at $ 743.31 USD

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Sale - Save 4%

$ 773.99

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

Starting at $ 743.31 USD

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This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1999-2003 540i with the M62TU VAN0S 4.4-liter engine. This package applies to cars equipped with either the manual or automatic transmission (select the appropriate parts in the menu below).

A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Our bundled package includes the following:

OEM Behr radiator (select for manual or automatic transmission)

OEM water pump (choose either the metal or composite impeller)

OE BMW coolant temp sensor (located in the water pump housing)

OEM Behr thermostat with housing and sensor

OEM Behr expansion tank with cap

OE BMW upper and lower radiator hoses with expansion tank hose
Optional items (which can be added below):
- OE BMW antifreeze
- Add a new coolant level sensor (known for failing / throwing "check coolant" messages)
- Replace the heat exchanger coolant lines for the automatic transmission
- Add a new fan clutch

Buy as a package and save $$$!

This cooling system overhaul kit fits the following BMWs:
1999-2003 E39 BMW 540i
1999-2001 E38 BMW 740i 740il

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Transmission Cooler Hose Set - E39 540i 99-03, E38 740i/iL 99-01 ...

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T#:338705

Part#: TMS16592

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Starting at $ 171.28 USD

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Starting at $ 171.28 USD

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The oil cooler/heat exchanger for the automatic transmission is one of the most overlooked sections of the 540i and 740i cooling system. The cooler (heat exchanger) is a part of the overall cooling system and uses coolant circulated from the regular cooling system to cool the transmission oil running through this small cooling block. Some of the hoses are shared with the rest of the cooling system as well. The E38/E39 heat exchanger is located along the driver's side frame rail and is accessed from the wheel well. We recommend servicing or cleaning the heat exchanger along with any cooling system overhaul. Or if you're having transmission faults (especially for temperature) you may want to clean the transmission cooler anyway and these hoses will be a nice finishing touch.

Replacing or cleaning the heat exchanger components could lead to better shifting of the automatic as the cooler itself can become clogged. If you're experiencing harder or hesitating shifts, and the internal transmission temperature is rising without being regulated, the components in this system are the likely cause. Staying on top of the cooling needs of the transmission will help prevent a very costly transmission repair in the future. These hoses are easily replaced and you can clean the heat exchanger easily with brake cleaner and some brushes.

Included in this handy package are:

11531711381 - transmission cooling hose from water pump to radiator (with t-connector)

11531711385 - transmission cooling hose from radiator to cooler

11531711384 - transmission cooling hose from cooler to water pump

11537511207 - transmission cooling hose from cooler to chassis

hose clamp

o-ring

This hose set fits the following BMWs:
1999-2003 E39 BMW 540i
1999-2001 E38 BMW 740i 740il

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Water Pump & Thermostat Replacement Kit - E39 540i, E38 740i/iL M62 ...

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T#:30463918

Part#: 11510393340KT3

Ships in 1-2 days

$ 266.99 USD

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$ 266.99 USD

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Maintain your BMW's cooling system and avoid costly repairs with our all-inclusive Water Pump and Thermostat Replacement Kit, expertly crafted by enthusiasts at Turner Motorsport. Designed specifically for your BMW model, this kit ensures proper engine operation at optimal temperatures, preventing overheating and extending engine life.

Key Benefits:

Comprehensive Kit: Simplify your cooling system overhaul with all necessary components in one package. High-Quality Parts: Each component meets or exceeds OEM standards, ensuring reliable performance and longevity. Optimal Cooling Performance: Regular water pump and thermostat replacement every 60,000 miles maintains peak cooling efficiency. Enhanced Reliability: Premium components like the Wahler Thermostat and Graf Water Pump ensure durable, long-lasting performance. Why Choose This Kit:

Maximize Cooling System Performance: Replacing your water pump and thermostat simultaneously ensures your BMW’s cooling system operates efficiently. Protect Your Engine: Properly flushing and refilling your cooling system with Genuine BMW coolant guarantees optimal freeze protection and corrosion resistance. Convenient and Cost-Effective: Combining all essential parts in one kit simplifies maintenance and ensures a thorough, lasting repair. Planning a cooling system overhaul? Opt for this comprehensive thermostat and water pump replacement kit for a lasting repair.

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URO Fan Blade - BMW E3X

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T#:373133

Part#: 11521712110

Ships in 1 Business Day

$ 33.99 USD

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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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$ 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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$ 56.99 USD

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

Aluminum Water Pump Pulley - 104MM

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T#:374330

Part#: 11511736910

In Stock

Sale - Save 22% $ 32.99

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

$ 25.78 USD

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Sale - Save 22%

$ 32.99

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.

Transmission Oil Cooler - Priced Each

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T#:568703

Part#: 17217505823

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$ 70.99 USD

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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.

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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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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$ 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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Auxiliary Fan Switch O-Ring

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T#:377077

Part#: 13621433077S

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$ 0.88 USD

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$ 0.88 USD

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

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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$ 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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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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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.

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 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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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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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

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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$ 6.99 USD

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Replace the sensor to get your gauge working properly again.

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

Ships on Jul 31, 2026

$ 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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$ 10.99 USD

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Comes with related o-ring

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