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BMW Cooling System Parts & Accessories for BMW 5 Series E39 (1996-2003)

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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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Genuine BMW Coolant Transfer Pipe

T#:35937

Part#: 11531741202

Special Order: No Guaranteed ETA

6% off MSRP $ 100.99

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

$ 94.99 USD

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6% off MSRP

$ 100.99

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

$ 94.99 USD

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Genuine BMW Pipe -
This item fits the following BMW Chassis:
E38,E39,E53 X5

Fits BMW Engines including:
M62

Genuine BMW Fan Blade

T#:360662

Part#: 11521712058

Ships in 1 day

3% off MSRP $ 104.99

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

$ 101.99 USD

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3% off MSRP

$ 104.99

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

$ 101.99 USD

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Sachs Radiator Fan Clutch - E34, E36, E39, E46, E53, Z3

T#:591739

Part#: 11527505302

Back Ordered

$ 231.08 USD

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$ 231.08 USD

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Common source of engine overheating

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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Genuine BMW Thermostat With Housing - E39 540i

For vehicles with production date up to 09/1998

T#:360671

Part#: 11531437526

Ships in 1-2 days

8% 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.

$ 177.99 USD

Limited Qty Sale

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8% 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.

$ 177.99 USD

Limited Qty Sale

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Don't take chances! Proper maintenance is required to keep your BMW performing at peak levels. The thermostat basically controls when your car will overheat. The sensor on the housing is also used by the engine computer to set the fuel mapping on the engine. A faulty sensor or thermostat will lead to the engine running rich (too much fuel).

This item fits the following BMWs:
up to 09/1999 E38 BMW 740i 740il
up to 09/1999 E39 BMW 540i

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Mahle-Behr Air Conditioning Fan - E39

For vehicles with production date up to 09/1998

T#:384565

Part#: 64548380780

In Stock at Vendor

$ 317.99

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

$ 303.99 USD

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$ 303.99 USD

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Also known as "pusher fan"

CSF Universal Large Single-Pass Oil Cooler - Universal Application ...

2X Entries Into Our F80 M3 Sweepstakes
Universal fitment design - modifications may be necessary to run this cooler

T#:53608839

Part#: 8371

Ships in 3 Business Days

$ 499.00 USD

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$ 499.00 USD

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CSF redesigned this cooler and went with a more traditional inlet/outlet orientation. The new single pass design features high efficiency and high durability, but with vertically oriented inlet and outlet connections.

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Radiator Pressure Test kit 14 pc

T#:3629267

Part#: ATD3300

Ships in 6 Business Days

$ 497.99 USD

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$ 497.99 USD

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Adapters for most European and domestic vehicles

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

For vehicles with production date up to 09/1998

For vehicles with production date up to 09/1998

T#:591464

Part#: 64548380780

Ships in 6 Business Days

$ 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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Universal 10" Electric Fan - Black

T#:378434

Part#: MMFAN10

Ships in 3 Business Days

$ 88.99 USD

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$ 88.99 USD

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WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.

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Expansion Tank Hose

For vehicles with production date from 09/1998

T#:641613

Part#: 11531438632

Ships in 9 Business Days

$ 25.99 USD

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$ 25.99 USD

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This Burgaflex expansion tank hose offers an ideal solution for enthusiasts looking to perform preventative maintenance or replace a worn component.

ACM Air Conditioning Fan - E39

For vehicles with production date up to 09/1998

T#:374495

Part#: 64548380780

Back Ordered

$ 229.99

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

$ 223.99 USD

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$ 223.99 USD

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Also known as "pusher fan"

Genuine BMW- Level 2 Cooling System Refresh Kit - M62 E39, E38 ...

For vehicles with production date up to 09/1998

T#:374431

Part#: 17111741167KT

Ships in 1-2 days

$ 1,060.99 USD

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$ 1,060.99 USD

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Genuine BMW - Expansion Tank Replacement Kit - E39 540i

T#:374589

Part#: 17111741167KT4

Ships in 1-2 days

$ 388.99

This product was last offered at the strikethrough price on
06-23-2026

$ 384.99 USD

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$ 384.99 USD

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Replace your expansion tank with all Genuine BMW parts for guaranteed reliability and longevity.

The kit includes:

Genuine BMW expansion tank with level sensor
Genuine BMW expansion tank cap and seal
Genuine BMW bleeder screw
Genuine BMW hose clamps
Genuine BMW coolant level sensor
When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

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Genuine BMW Heater Hose - E39 540i

T#:368730

Part#: 64218391013

Ships in 1-2 days

2% off MSRP $ 88.99

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

$ 86.99 USD

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Qty

2% off MSRP

$ 88.99

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

$ 86.99 USD

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Genuine BMW - Level 1 Thermostat Replacement Kit- M62TU

For vehicles with production date from 09/1998

T#:374624

Part#: 11531436386KT

In Stock

$ 236.99 USD

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Qty

$ 236.99 USD

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Genuine BMW Additional Water Pump - 64118381989 - E39

T#:16276

Part#: 64118381989

Ships in 1-2 days

4% off MSRP $ 199.99

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

$ 192.99 USD

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4% off MSRP

$ 199.99

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

$ 192.99 USD

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Genuine BMW Additional Water Pump -
This item fits the following BMW Chassis:
E39

Genuine BMW - Level 2 Cooling System Kit - M62TU E39, E38

For vehicles with production date from 09/1998

T#:374432

Part#: 17111741167KT1

Ships in 1 day

$ 1,099.99

This product was last offered at the strikethrough price on
09-09-2026

$ 1,098.99 USD

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$ 1,098.99 USD

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Febi Coolant Expansion Tank - E31, E38, E39

We Price Match - Give Us A Call or Chat!

T#:381841

Part#: 17111741167

Special Order: No Guaranteed ETA

$ 90.99 USD

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$ 90.99 USD

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Replace your cracked or faded expansion tank.

Febi Radiator Fan Clutch - E31, E32, E34, E38, E39

We Price Match - Give Us A Call or Chat!

T#:341629

Part#: 11527502804

Special Order: No Guaranteed ETA

$ 109.99 USD

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$ 109.99 USD

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Quality aftermarket replacement

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