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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 Thermostat With Housing - M52 M54

T#:360689

Part#: 11537509227

In Stock

Sale - Save 8% $ 169.69

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

$ 156.96 USD

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$ 169.69

This product was last offered at the strikethrough price on
08-26-2026

$ 156.96 USD

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Engine Coolant Recovery Tank Hose - E39, E52

T#:45574

Part#: 17102693701

In Stock

Sale - Save 8% $ 77.99

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

$ 71.66 USD

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$ 77.99

This product was last offered at the strikethrough price on
08-26-2026

$ 71.66 USD

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Genuine BMW Vent Pipe
This item fits the following BMW Chassis:
E39 M5,E39

Fits BMW Engines including:
S62

Genuine BMW Radiator Hose - Lower - E39 525i 528i 530i

For vehicles with production date from 09/1998

T#:360673

Part#: 11531705224

In Stock

Sale - Save 9% $ 55.99

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

$ 51.19 USD

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Sale - Save 9%

$ 55.99

This product was last offered at the strikethrough price on
08-26-2026

$ 51.19 USD

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Genuine BMW Water Pump Pulley

For vehicles with production date from 09/1998

T#:4472

Part#: 11511436590

In Stock

Sale - Save 7% $ 73.99

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

$ 68.99 USD

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Sale - Save 7%

$ 73.99

This product was last offered at the strikethrough price on
08-17-2026

$ 68.99 USD

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SEE T#337981

Genuine BMW Rubber Protection Strip - E39 E38 E52

T#:45775

Part#: 17111737713

In Stock

Sale - Save 8% $ 25.99

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

$ 23.99 USD

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$ 25.99

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

$ 23.99 USD

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Genuine BMW Rubber Strip - L=621mm
This item fits the following BMW Chassis:
E39 M5,E38,E39

Fits BMW Engines including:
M52,M54,M60,M62,M73,M73N,S62

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Bracket F On Bord Monitor Radio - E39

T#:153200

Part#: 65128368216

In Stock

Sale - Save 8% $ 23.99

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

$ 22.14 USD

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$ 23.99

This product was last offered at the strikethrough price on
08-26-2026

$ 22.14 USD

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Genuine BMW Bracket F On Bord Monitor Radio
This item fits the following BMW Chassis:
E39 M5,E39

Genuine BMW Water Pipe - E38 740i 740iL E39 540i

For vehicles with automatic transmission and a production date from 09/1998

T#:367678

Part#: 11531711384

In Stock

Sale - Save 8% $ 82.99

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

$ 76.40 USD

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$ 82.99

This product was last offered at the strikethrough price on
08-26-2026

$ 76.40 USD

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Genuine BMW Cooling Hose

T#:367830

Part#: 13541703865

In Stock

Sale - Save 8% $ 53.99

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

$ 49.58 USD

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$ 53.99

This product was last offered at the strikethrough price on
08-26-2026

$ 49.58 USD

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Genuine BMW Fan Shroud Bushing

T#:152340

Part#: 64538361938

In Stock

Sale - Save 7% $ 14.99

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

$ 13.99 USD

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Sale - Save 7%

$ 14.99

This product was last offered at the strikethrough price on
08-17-2026

$ 13.99 USD

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Genuine BMW Bush
This item fits the following BMW Chassis:
E39 M5,E38,E39

Genuine BMW Thermostat With Housing - E39 540i

For vehicles with production date up to 09/1998

T#:360671

Part#: 11531437526

In Stock

Sale - Save 8% $ 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

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$ 193.99

This product was last offered at the strikethrough price on
08-10-2026

$ 177.99 USD

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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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Genuine BMW Idler Pulley Bolt - E53 X5 M62 E31 840Ci E38 740i 740iL ...

T#:33603

Part#: 11281435115

In Stock

$ 11.99 USD

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$ 11.99 USD

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Genuine BMW Fillister-Head Screw - M8X80
This item fits the following BMW Chassis:
E39 M5,E38,E39,E53 X5 X5

Fits BMW Engines including:
M62,S62

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Bracket F Left Radiator Support - E38, E39

T#:70041

Part#: 41118125049

In Stock

Sale - Save 10% $ 14.99

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

$ 13.52 USD

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Qty

Sale - Save 10%

$ 14.99

This product was last offered at the strikethrough price on
08-26-2026

$ 13.52 USD

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Genuine BMW Bracket F Left Radiator Support
This item fits the following BMW Chassis:
E39 M5,E38,E39

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