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BMW Cooling System Parts & Accessories for BMW E90 M3 S65 4.0L

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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 Control Sleeve - 17107523260 - E82,E89,E90,E92,E93 N51, N...

T#:45590

Part#: 17107523260

Ships in 2 Business Days

2% off MSRP $ 96.99

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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2% off MSRP

$ 96.99

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 Control Sleeve -
This item fits the following BMW Chassis:
E82,E89 Z4,E90,E92,E93

Fits BMW Engines including:
N51,N52,N52N,S65

Genuine BMW Coolant Hose - S65 4.0L

T#:367935

Part#: 17222283594

In Stock

6% off MSRP $ 109.99

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

$ 102.99 USD

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6% off MSRP

$ 109.99

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

$ 102.99 USD

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Genuine BMW Coolant hose - E90 E92 E93 M3

T#:368851

Part#: 64219119156

Special Order: No Guaranteed ETA

6% off MSRP $ 52.99

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

$ 49.99 USD

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6% off MSRP

$ 52.99

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

$ 49.99 USD

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Temperature Sensor

2X Entries Into Our F80 M3 Sweepstakes

T#:37892090

Part#: 13621433076

In Stock

$ 10.34 USD

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$ 10.34 USD

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Temperature sensor for monitoring coolant and oil

BMW Antifreeze Coolant - 1 Liter Bottle

T#:11526

Part#: 82142209769

In Stock

$ 10.60

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

$ 10.57 USD

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$ 10.57 USD

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This 1 liter bottle is perfect for topping of the coolant in your BMW. This is The use of Original BMW Anti-Freeze/Coolant will ensure sufficient cooling in summer and protection against freeze-ups in winter. BMW Antifreeze/Coolant will also guard your vehicle's various engine components against corrosion. BMW Anti-Freeze/ Coolant will prevent excessive silicate gel precipitation, which may cause plugging of the cooling system and lead to more extensive repairs.

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Genuine BMW Hose Clamp 07129952104

T#:6533

Part#: 07129952104

In Stock

$ 3.99 USD

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$ 3.99 USD

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GENUINE BMW HOSE CLAMP 07129952104

Radiator Carrier - Right

2X Entries Into Our F80 M3 Sweepstakes

T#:593028

Part#: 17107524914

In Stock

$ 49.99 USD

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Qty

$ 49.99 USD

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Plastic side frame for radiator

Gasket Ring

A18X22

T#:6495

Part#: 07119963300

In Stock

$ 1.99 USD

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$ 1.99 USD

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GENUINE BMW GASKET RING 07119963300

Febi Temperature Sensor

We Price Match - Give Us A Call or Chat!

T#:340711

Part#: 13621433076

In Stock

$ 17.99

This product was last offered at the strikethrough price on
06-22-2026

$ 16.99 USD

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$ 16.99 USD

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Monitors coolant / oil temperature

Radiator Support Bracket

T#:371231

Part#: 17117514402

In Stock

$ 7.99

This product was last offered at the strikethrough price on
06-19-2026

$ 5.09 USD

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$ 5.09 USD

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URO Coolant Bleeder Screw - Priced Each - BMW E9X F10

2X Entries Into Our F80 M3 Sweepstakes

T#:5416748

Part#: 11537793373

In Stock

$ 1.99 USD

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Qty

$ 1.99 USD

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URO Coolant Bleeder Screw - Priced Each - BMW E9X F10

The URO Coolant Bleeder Screw - Priced Each - BMW E9X F10 is a crucial component for maintaining optimal performance in your BMW's cooling system. When performing routine service, ensuring that all air pockets are removed from the coolant system is vital for proper function. Air pockets in the cooling system can prevent heat from circulating properly, potentially causing issues such as reduced heating efficiency or even engine overheating if trapped behind the thermostat.

Ensures proper air removal from the cooling system for improved engine performance
Prevents air pockets from interfering with heat circulation and engine cooling
Easy installation for an efficient and secure fit
Durable construction designed to withstand high pressure and temperature conditions
Helps maintain a fully functional cooling system, avoiding overheating and damage

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Genuine BMW O-Ring - Priced Each

T#:367933

Part#: 17222245358

In Stock

$ 3.99 USD

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$ 3.99 USD

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Upgrade your BMW's oil or transmission cooling system with the Turner Motorsport Genuine O-Ring, part number 17222245358. This high-quality O-ring is designed to provide a reliable seal, ensuring optimal performance and preventing leaks in your BMW's vital systems. Additionally, it is compatible with MINI applications, where it is commonly used on the end of the parking brake cable.

Genuine BMW part for guaranteed quality and compatibility
Prevents leaks in the oil and transmission cooling systems
Ensures optimal performance of vital components
Compatible with MINI applications for versatile use

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Rein Expansion Tank Cap

2X Entries Into Our F80 M3 Sweepstakes

T#:384807

Part#: 17117639021

In Stock

$ 16.99 USD

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$ 16.99 USD

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Cap for plastic expansion tank

Brass Drain Plug

2X Entries Into Our F80 M3 Sweepstakes

T#:587674

Part#: 17117530902

In Stock

$ 6.99 USD

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Qty

$ 6.99 USD

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Used to drain the radiator

Radiator Lower Support & Bushing Kit

T#:55317651

Part#: 171178RLSKT

Ships in 1 Business Day

$ 56.33 USD

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$ 56.33 USD

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Keep your cooling system locked down on the street and the track with the Turner Motorsports Radiator Lower Support & Bushing Kit.

Radiator Mount

2X Entries Into Our F80 M3 Sweepstakes

T#:56977984

Part#: 17117514402

Ships in 1 Business Day

$ 6.99 USD

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$ 6.99 USD

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Maintain cooling system stability under spirited street driving and hard track use with this URO Parts replacement upper radiator mount bracket.

Expansion Tank Cap

2X Entries Into Our F80 M3 Sweepstakes

T#:373099

Part#: 17137516004

Ships in 1 Business Day

$ 15.99

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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The coolant expansion tank cap keeps necessary pressure on your coolant to increase efficiency. If you have an overheating issue in your vehicle, a simple, quick, and inexpensive part to replace is this cap.

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Rubber Lower Radiator Mount Insert - Priced Each

2X Entries Into Our F80 M3 Sweepstakes

T#:593045

Part#: 17117805310

Ships in 1 Business Day

$ 18.99 USD

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$ 18.99 USD

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Found at the bottom of the radiator

O-RING

T#:580584

Part#: C32348

Ships in 6 Business Days

$ 3.99

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

$ 2.99 USD

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$ 2.99 USD

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New Water Pump - With O-Ring - Metal Impellar

10X Entries Into Our F80 M3 Sweepstakes

T#:56074199

Part#: 11517838201

Ships on Nov 19, 2026

$ 99.99 USD

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$ 99.99 USD

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Expansion Tank Cap

We Price Match - Give Us A Call or Chat!

T#:382437

Part#: 17117639021

Special Order: No Guaranteed ETA

$ 25.99 USD

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$ 25.99 USD

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Maintain maximum cooling efficiency and system pressure with this Febi Bilstein 2.0 bar replacement cap.

Fluid Level Sensor

5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

T#:5973204

Part#: 17117546548

Ships on Oct 29, 2026

$ 13.99 USD

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$ 13.99 USD

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MEYLE-ORIGINAL: True to OE fluid level sensor. Used in multiple locations. Wulf Gaertner Autoparts AG manufactures and markets automotive spare parts under its MEYLE brand. Since its foundation in 1958, Wulf Gaertner Autoparts has been an owner-operated, unlisted family business on the aftermarket scene. Since 1995, Wulf Gaertner Autoparts AG has been manufacturing and trading under its MEYLE brand. They pride themselves on top-grade quality-tested spare parts for passenger cars, vans and commercial vehicles. Comparable OE Cross Reference - 17117546548

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Meistersatz Temperature Sensor

T#:379740

Part#: 13621433076

In Stock at Vendor

$ 15.99 USD

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$ 15.99 USD

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Monitors coolant / oil temperature

Radiator Support Bracket

2X Entries Into Our F80 M3 Sweepstakes

T#:14122755

Part#: 17117514402

Back Ordered

$ 8.99

This product was last offered at the strikethrough price on
08-13-2026

$ 8.24 USD

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$ 8.24 USD

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Mounts to top of radiator bracket, 2 per vehicle.

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