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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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Basic Cooling System Service Kit - E34 525i M50 2.5L

T#:557231

Part#: E34525BCKT

Ships in 10 Business Days

Sale - Save 13% $ 264.99

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

$ 229.70 USD

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Sale - Save 13%

$ 264.99

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

$ 229.70 USD

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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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Water Pump - E34 530i 540i E32 740i/il

T#:338251

Part#: 11510007042X

Ships in 8 Business Days

Starting at $ 470.99 USD

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Starting at $ 470.99 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 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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EMP/Stewart High Performance Water Pump for BMW M50/M52/M54/S50/S52 6...

T#:3780

Part#: 888010330

In Stock

$ 219.99

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

$ 204.99 USD

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$ 204.99 USD

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This high performance water pump is a direct replacement pump designed to fit a wide range of BMW engines with no modifications. That includes accepting the Factory Fan Clutch. The front of the BMW High Performance Water Pump is stock appearing giving it that classic BMW look while the back is all business. Features up to 20% increase of water flow over stock pump, and it TWICE as efficient as factory pump, much less parasitic drag than other pumps, stainless steel impeller, heavy duty bearing, high quality water seal. Manufactured by EMP / Stewart Components. THIS PUMP COMES WITH A LIMITED LIFETIME WARRANTY

Fits all US Spec M50/52/54 and S50/52 6 cylinder engines including:
E36 chassis 1992-1999 325,328, 323 and M3
E46 chassis 1999-2005 323,325,328 &330
E34 chassis 1991-1995 525i
E39 chassis 1997-2003 525i, 528i & 530i
E53 X5 SAV 1999-2003 6 cylinder models
Z3 2.8 and 3.0 6 cylinder engines.
Z4 (Not M) including Z4 2.5 & 3.0

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Spal Electric Fan Harness with Relay - 185 Degree Switch

T#:598892

Part#: 185FH

In Stock

11% off MSRP $ 193.99

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

$ 171.99 USD

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11% off MSRP

$ 193.99

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

$ 171.99 USD

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SPAL® electric fan wiring harness kits are a must-have when installing electric fans. Designed to safely integrate with OEM wiring, the SPAL kits feature a waterproof relay along with printed wires which aid in installation. The wiring kits also feature stainless steel switches with optional switched override capability, fuse holder, and wiring connectors. Features: Makes installation of your new fan a breeze Designed to safely integrate with OEM wiring Feature a waterproof 10/40 amp relay with printed wires for easy installation Kit features a 3/8” NPT thermos-switch and a 3/8” to ½” NPT adapter Harness is designed for 12V systems only

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Spal Universal 16" Low Profile Electric Fan

T#:583648

Part#: 30100400

In Stock

$ 111.99 USD

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$ 111.99 USD

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Low profile design makes an easy fit when clearance is an issue. 1300 CFM.

Radiator / Cooling System Pressure Tester- Bavarian Autosport ...

T#:580397

Part#: B8800084

In Stock

Sale - Save 15% $ 146.99

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

$ 124.94 USD

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Sale - Save 15%

$ 146.99

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

$ 124.94 USD

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Universal 16" Electric puller Fan - Black

T#:598821

Part#: 30101516

Ships in 2 Business Days

11% off MSRP $ 168.99

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

$ 149.99 USD

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11% off MSRP

$ 168.99

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

$ 149.99 USD

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1469 CFM. High performance puller fan with straight blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 16.3in x 15.75in x 2.48in Airflow (CFM): 1469

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MINI Universal 16" Electric Fan - Black

T#:376582

Part#: 30102049

In Stock

$ 207.99 USD

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$ 207.99 USD

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For BMW owners seeking enhanced airflow or tighter engine compartment clearance, Turner Motorsport presents a Universal Fan. Ideal for applications like aftermarket turbo setups, this fan ensures optimal cooling performance. Please note that this fan is universal and may require modification to fit your specific application. Crafted in Italy, this fan boasts dimensions of 16.30in x 15.75in x 3.47in and provides an airflow of 2024 CFM.

Enhanced airflow for improved engine cooling
Ideal for applications with tight tolerances, such as aftermarket turbo setups
Universal design allows for versatile installation
Crafted in Italy for quality assurance
Compact size with powerful airflow capacity

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Spal Universal 16" Electric Fan - Black

T#:583649

Part#: 30102048

In Stock

$ 207.99 USD

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$ 207.99 USD

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Universal fan that allows increased cooling capacity and shroudless design. 1959 CFM.

Universal 12" Electric puller Fan - Black

T#:598801

Part#: 30100375

In Stock at Vendor

$ 99.99 USD

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$ 99.99 USD

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861 CFM. High performance puller fan with straight blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 13.25in x 12.5in x 2.2in Airflow (CFM): 861

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Spal Electric Fan Harness with Relay

T#:2181323

Part#: FRH

Special Order: No Guaranteed ETA

12% off MSRP $ 112.99

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

$ 99.99 USD

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12% off MSRP

$ 112.99

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

$ 99.99 USD

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SPAL® electric fan relay wiring kits are designed to automatically turn on your SPAL® electric fan when the air conditioning is turned on. They can also be used when dual electric fans are installed using one switching device. Features: Makes installation of your new fan a breeze Designed to safely integrate with OEM wiring Feature a waterproof 10/40 amp relay with printed wires for easy installation Harness is designed for 12V systems only Does not included thermo-switch

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Universal 16" High performance Electric puller Fan - Black

T#:598818

Part#: 30102113

In Stock at Vendor

$ 257.99 USD

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$ 257.99 USD

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2467 CFM. High performance puller fan with curved blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 16.25in x 15.75in x 3.5in Airflow (CFM): 2467

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Universal 12" Electric Puller Fan - Black

T#:598797

Part#: 30102029

In Stock

$ 207.99 USD

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$ 207.99 USD

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1328 CFM. High performance puller fan with curved blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 13.25in x 12.5in x 3.5n Airflow (CFM): 1328

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