BMW Cooling System Parts & Accessories

Rein Water Hose With Metal Flange - F-Chassis - N55

2X Entries Into Our F80 M3 Sweepstakes

T#:53750147

Part#: CHU0632

In Stock

$ 52.99 USD

Add to Wish List

Qty

$ 52.99 USD

Add to Wish List

Heat cycles cause Cracking and Leaks on Rubber and Plastic Components. Replace Leaking Hose with this Part From Rein Featuring Upgraded Metal Flanges

Rein Water Hose Problem Solver Kit - F chassis N55

2X Entries Into Our F80 M3 Sweepstakes

T#:53750119

Part#: 11537598237

In Stock at Vendor

$ 26.99 USD

Add to Wish List

Qty

$ 26.99 USD

Add to Wish List

Rein's Rubber Elbow Problem Solver Kit for the Coolant Feed Hose Replaces the Rubber End of the Hard Feed Line Without Having to Move the Exhaust or Replace the Entire Hard Line

Coolant Return Line

2X Entries Into Our F80 M3 Sweepstakes

T#:53856300

Part#: 11538650087

In Stock

$ 60.99 USD

Add to Wish List

Qty

$ 60.99 USD

Add to Wish List

Rein Automotive turbo hoses are engineered to meet these rigorous demands, providing the reliability required for both the track and the street.

Rein Engine Coolant Reservoir - BMW G1X, G3X

2X Entries Into Our F80 M3 Sweepstakes

T#:52516268

Part#: EPT0274

Ships in 3 Business Days

$ 114.99 USD

Add to Wish List

Qty

$ 114.99 USD

Add to Wish List

Protect your BMW investment with the Rein EPT0274 Engine Coolant Reservoir, the professional’s choice for cooling system restoration.

Rein Coolant Hose With Metal Flange - E82, E88, E9x - N55

2X Entries Into Our F80 M3 Sweepstakes

T#:53750144

Part#: CHU0629

In Stock

$ 56.99 USD

Add to Wish List

Qty

$ 56.99 USD

Add to Wish List

Upgraded Coolant Hose from Rein Featuring Metal Flanges to Reduce Leaks

Rein Lower Radiator Hose - G30 G11 G14 G15 G16 - N63

2X Entries Into Our F80 M3 Sweepstakes

T#:55857776

Part#: 17128602669

In Stock at Vendor

$ 49.99 USD

Add to Wish List

Qty

$ 49.99 USD

Add to Wish List

When it comes to keeping your vehicle on the road, a compromised cooling system is a severe vulnerability. Plastic and rubber degrade from constant heat cycling, leading to hairline cracks, swelling, and sudden failure.

Show More Show Less

Radiator Hose - Lower

10X Entries Into Our F80 M3 Sweepstakes

T#:53008808

Part#: 17127564478

In Stock

Sale - Save 20% $ 37.99

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

$ 30.39 USD

Add to Wish List

Qty

Sale - Save 20%

$ 37.99

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

$ 30.39 USD

Add to Wish List

Gasket, Water Pump (Cooling System)

2X Entries Into Our F80 M3 Sweepstakes

T#:54852013

Part#: B47.470

In Stock

$ 11.99 USD

Add to Wish List

Qty

$ 11.99 USD

Add to Wish List

Upgrade your worn components with this high-quality piece and drive with the confidence that your engine is sealed tight and performing at its absolute best.

Rein Engine Inlet To Changeover Valve Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:52903280

Part#: 17128616914

In Stock at Vendor

$ 45.99 USD

Add to Wish List

Qty

$ 45.99 USD

Add to Wish List

This Rein Automotive coolant hose is an exact-fit aftermarket solution for the BMW "By-Pass Hose".

Rein Radiator Expansion Tank Hose - G30 B48 B58

2X Entries Into Our F80 M3 Sweepstakes

T#:55821725

Part#: 17125A09423

In Stock

$ 18.99 USD

Add to Wish List

Qty

$ 18.99 USD

Add to Wish List

While the modern B48 and B58 powerplants are incredibly robust, BMW’s choice of brittle plastics for their cooling loops remains a major weak link. This upper radiator vent hose runs constantly hot as it returns pressurized coolant back to the expansion tank. After years of being baked by engine bay heat, the thin plastic neck and internal quick-disconnect seals degrade. A hardened factory plastic line can snap at any moment, spraying coolant everywhere.

Show More Show Less

Rein Auxiliary Water Pump - E65 E66 7 Series

2X Entries Into Our F80 M3 Sweepstakes

T#:58745797

Part#: 64116922699

Ships in 3 Business Days

$ 84.99 USD

Add to Wish List

Qty

$ 84.99 USD

Add to Wish List

Engineered as a direct replacement for failure prone original equipment secondary pumps, this electric water pump ensures steady hot fluid delivery to the heater core regardless of engine RPM. Built with high quality internal bearings, durable motor windings, and high grade composite housings, it withstands continuous thermal cycling and prevents internal electrical failures.

Show More Show Less

Rein Engine Coolant Hose - Upper Radiator To Expansion Tank - BMW G3X...

2X Entries Into Our F80 M3 Sweepstakes

T#:52903294

Part#: 17129844478

Back Ordered

$ 49.99 USD

Add to Wish List

Qty

$ 49.99 USD

Add to Wish List

Upgrade your cooling system with the Rein Automotive replacement coolant hose, engineered to meet or exceed the rigorous standards of your BMW.

Rein Thermostat Assembly - F Chassis, G-Chassis - B48

2X Entries Into Our F80 M3 Sweepstakes

T#:53891628

Part#: 11537644811

Ships in 3 Business Days

$ 322.99

This product was last offered at the strikethrough price on
06-10-2026

$ 288.99 USD

Add to Wish List

Qty

$ 288.99 USD

Add to Wish List

Whether you're managing a fleet of "spirited" daily drivers or prepping a chassis for the circuit, the Rein CTA0079 offers the peace of mind that comes with OE-quality engineering.

Rein Junction Heat Hose - F3x F22 G30 G12 G01 G02 B58

2X Entries Into Our F80 M3 Sweepstakes

T#:58563047

Part#: 11538606278

Ships in 3 Business Days

$ 38.99 USD

Add to Wish List

Qty

$ 38.99 USD

Add to Wish List

Protect your engine against thermal degradation and maintain precise cooling system pressure with a Rein Heat Exchanger Return Hose. Engineered as a direct fit replacement for failure prone factory coolant lines, this hose routes coolant through the heat exchanger assembly to prevent thermal spikes under heavy load. Manufactured with high grade heat resistant EPDM rubber and OEM style quick connect fittings, it provides exceptional resistance to internal pressure surges, oil exposure, and cracking across high output 3.0L inline six engine bays.

Show More Show Less

Rein Coolant Expansion Tank Kit - F97 F98 G01 G02 G05 G06 G07 - S58 B...

2X Entries Into Our F80 M3 Sweepstakes

T#:55965839

Part#: 17138610661

Ships in 3 Business Days

$ 56.99 USD

Add to Wish List

Qty

$ 56.99 USD

Add to Wish List

Keep your ultimate driving machine cool under pressure with this replacement auxiliary expansion tank from Rein. On modern turbocharged BMWs, the secondary cooling system plays a critical role in managing intake charge air temperatures, making a solid reservoir vital for both spirited street driving and track day reliability.

Show More Show Less

Water Pump Service Kit

2X Entries Into Our F80 M3 Sweepstakes

T#:57616362

Part#: 1151758692550

Ships in 3 Business Days

$ 1,264.99 USD

Add to Wish List

Qty

$ 1,264.99 USD

Add to Wish List

This CRP/Rein service kit offers an all-in-one overhaul solution designed to restore maximum cooling system integrity.

Rein Lower Radiator Hose - G3x G1x

2X Entries Into Our F80 M3 Sweepstakes

T#:58489956

Part#: 17128602613

Ships in 3 Business Days

$ 44.99 USD

Add to Wish List

Qty

$ 44.99 USD

Add to Wish List

Protect your engine against thermal breakdown and maintain precise cooling system pressure with a Rein Lower Radiator Hose. Engineered as a direct fit replacement for degradation prone factory rubber hoses, this coolant line connects the lower radiator circuit to ensure steady fluid circulation under heavy driving conditions. Manufactured with high grade heat resistant EPDM rubber and OEM style quick connect fittings, it provides exceptional resistance to internal pressure spikes, ozone exposure, and chemical breakdown.

Show More Show Less

Rein Turbocharger Coolant Supply Line - BMW B58 Gen2

2X Entries Into Our F80 M3 Sweepstakes

T#:58307569

Part#: 11538650086

Ships in 3 Business Days

$ 72.00 USD

Add to Wish List

Qty

$ 72.00 USD

Add to Wish List

Supplies coolant to the turbocharger

Water Pump Service Kit

2X Entries Into Our F80 M3 Sweepstakes

T#:57616366

Part#: 115175869251

Ships in 3 Business Days

$ 1,326.99 USD

Add to Wish List

Qty

$ 1,326.99 USD

Add to Wish List

Refresh your cooling setup with full confidence and protect your investment against heat-induced power loss.

Rein Engine Coolant Hose - BMW G11, G30 5

2X Entries Into Our F80 M3 Sweepstakes

T#:52516262

Part#: CHE0993

Ships in 3 Business Days

$ 64.99 USD

Add to Wish List

Qty

$ 64.99 USD

Add to Wish List

Restore your cooling system’s integrity with the Rein CHE0993 Engine Coolant Hose.

Water Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:57616352

Part#: 17127599452

Ships in 3 Business Days

$ 63.99 USD

Add to Wish List

Qty

$ 63.99 USD

Add to Wish List

Rein Automotive cooling hoses are designed as precision OEM-quality replacements that withstand the rigorous demands of hard driving.

Water Pump Service Kit

2X Entries Into Our F80 M3 Sweepstakes

T#:57616365

Part#: 115175869253

Ships in 3 Business Days

$ 1,265.99 USD

Add to Wish List

Qty

$ 1,265.99 USD

Add to Wish List

Engineered to deliver factory-level reliability, the Rein Electric Water Pump Service Kit is an essential maintenance upgrade for your BMW.

Rein Coolant Temperature Sensor - BMW E6X, E7X, E9X

2X Entries Into Our F80 M3 Sweepstakes

T#:52516266

Part#: ELC0090

Ships in 3 Business Days

$ 69.99 USD

Add to Wish List

Qty

$ 69.99 USD

Add to Wish List

The Rein ELC0090 is a critical component for BMW N52-series engines, replacing the often-ignored "angle connector" located beneath the intake manifold.

Auxillary Water Pump - BMW N63 S63

2X Entries Into Our F80 M3 Sweepstakes

T#:58818960

Part#: 11515A36581

Ships in 3 Business Days

$ 93.99 USD

Add to Wish List

Qty

$ 93.99 USD

Add to Wish List

Pumps coolant to the turbo

Upper Radiator Coolant Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:58489958

Part#: 17128654834

Ships in 3 Business Days

$ 65.99 USD

Add to Wish List

Qty

$ 65.99 USD

Add to Wish List

Protect your engine against severe heat soak and maintain precise cooling system pressure with a Rein Upper Radiator Hose. Engineered as a direct fit replacement for degradation prone original equipment hoses, this upper radiator line transfers high temperature coolant straight to the main radiator. Manufactured with high grade heat resistant EPDM rubber and OEM style quick connect fittings, it provides exceptional resistance to internal pressure spikes, ozone degradation, and chemical breakdown under demanding driving conditions.

Show More Show Less

Rein Thermostat Assembly - F22 F87 F23 F30 F34 F32 F33 F36 F15 F16 - ...

2X Entries Into Our F80 M3 Sweepstakes

T#:55965849

Part#: 11537598865

Ships in 3 Business Days

$ 79.99 USD

Add to Wish List

Qty

$ 79.99 USD

Add to Wish List

A malfunctioning or lazy thermostat can lead to poor fuel trim efficiency, sluggish performance, and destructive overheating. This Rein thermostat assembly is engineered as a robust direct replacement for your worn factory unit, ensuring proper coolant regulation through the radiator under heavy loads.

Show More Show Less

Rein Additional Water Pump - N63 F Chassis

2X Entries Into Our F80 M3 Sweepstakes

T#:58782367

Part#: 64119230237

Ships in 3 Business Days

$ 92.99 USD

Add to Wish List

Qty

$ 92.99 USD

Add to Wish List

Engineered as a direct replacement for failure prone original equipment secondary pumps, this electric water pump ensures steady hot fluid delivery to the heater core regardless of engine RPM. Built with high quality internal bearings, durable motor windings, and high grade composite housings, it withstands continuous thermal cycling and prevents internal electrical failures.

Show More Show Less

Water Pump Service Kit

2X Entries Into Our F80 M3 Sweepstakes

T#:57616363

Part#: 115175869259

Ships in 3 Business Days

$ 1,687.99 USD

Add to Wish List

Qty

$ 1,687.99 USD

Add to Wish List

Protect your high-performance driving machine from the devastating consequences of thermal overload with the Rein Water Pump Service Kit.

Rein Water Hose With Metal Flange - E70, E71 - N55, N54

2X Entries Into Our F80 M3 Sweepstakes

T#:53750149

Part#: CHU0633

Ships in 3 Business Days

$ 56.99 USD

Add to Wish List

Qty

$ 56.99 USD

Add to Wish List

Heat cycles cause Cracking and Leaks on Rubber and Plastic Components. Replace Leaking Hose with this Part From Rein Featuring Upgraded Metal Flanges

Coolant Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:57616346

Part#: 17128620944

Ships in 3 Business Days

$ 43.99 USD

Add to Wish List

Qty

$ 43.99 USD

Add to Wish List

Keep your European powertrain running at optimal operating temperatures with a high-grade coolant hose replacement.

Coolant Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:57086700

Part#: 17137642158

Ships in 3 Business Days

$ 55.99 USD

Add to Wish List

Qty

$ 55.99 USD

Add to Wish List

The factory expansion tank is one of the most common failure points in modern BMW cooling systems, often failing along seam welds or developing micro-cracks around fluid quick-connect fittings. Replacing a degraded reservoir with this direct-fit Rein expansion tank restores pressure containment, ensures accurate coolant expansion volume, and prevents fluid loss before it turns into severe engine damage.

Show More Show Less

Rein Coolant Expansion Tank - With Cap

2X Entries Into Our F80 M3 Sweepstakes

T#:53891623

Part#: 17135A6A030C

Ships in 3 Business Days

$ 99.99 USD

Add to Wish List

Qty

$ 99.99 USD

Add to Wish List

Replace your old brittle expansion tank

Rein Coolant Expansion Tank - F97 F98 G01 G02 G05 G06 G07 - S58 B46 B...

2X Entries Into Our F80 M3 Sweepstakes

T#:55965843

Part#: 171386106612

Ships in 3 Business Days

$ 49.99 USD

Add to Wish List

Qty

$ 49.99 USD

Add to Wish List

Keep your ultimate driving machine cool under pressure with this replacement auxiliary expansion tank from Rein. On modern turbocharged BMWs, the secondary cooling system plays a critical role in managing intake charge air temperatures, making a solid reservoir vital for both spirited street driving and track day reliability.

Show More Show Less

Upper Radiator Coolant Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:58563050

Part#: 17128602871

Ships in 3 Business Days

$ 64.99 USD

Add to Wish List

Qty

$ 64.99 USD

Add to Wish List

Protect your engine against severe thermal breakdown and maintain precise cooling system pressure with a Rein Primary Upper Radiator Hose. Engineered as a direct fit replacement for degradation prone original equipment hoses, this upper radiator line transfers high temperature coolant straight to the primary radiator core. Manufactured with high grade heat resistant EPDM rubber and OEM style quick connect fittings, it provides exceptional resistance to internal pressure spikes, ozone degradation, and chemical breakdown under demanding driving conditions.

Show More Show Less

Rein Coolant Expansion Tank With Cap And Level Sensor - BMW F22/23 F3...

2X Entries Into Our F80 M3 Sweepstakes

T#:58782356

Part#: 17137642158K

Ships in 3 Business Days

$ 76.99 USD

Add to Wish List

Qty

$ 76.99 USD

Add to Wish List

Eliminate coolant leaks with this brand new reservoir and cap kit from Rein - integrate coolant level sensor included with the coolant reservoir

Rein Water Hose with Metal Flange - E60, E61 - N54

2X Entries Into Our F80 M3 Sweepstakes

T#:53750141

Part#: CHU0460

Ships in 3 Business Days

$ 52.99 USD

Add to Wish List

Qty

$ 52.99 USD

Add to Wish List

Heat cycles cause Cracking and Leaks on Rubber and Plastic Components. Replace Leaking Hose with this Part From Rein Featuring Upgraded Metal Flanges

Rein Coolant Expansion Tank Hose - F48 X1 F39 X2

2X Entries Into Our F80 M3 Sweepstakes

T#:58489960

Part#: 17127646898

Ships in 3 Business Days

$ 26.99 USD

Add to Wish List

Qty

$ 26.99 USD

Add to Wish List

Protect your engine against thermal degradation and maintain precise cooling system pressure with a Rein Expansion Tank Vent Hose. Engineered as a direct fit replacement for failure prone original equipment vent lines, this coolant hose safely bleeds air and expanded fluid back to the reservoir. Manufactured with durable heat resistant materials and factory style quick connect fittings, it ensures a tight seal against pressure drops and prevents fluid loss across transverse B46, B48, and B38 engine bays.

Show More Show Less

Engine Coolant Thermostat - F25 F26 - N55

2X Entries Into Our F80 M3 Sweepstakes

T#:55965845

Part#: 11537586784

Ships in 3 Business Days

$ 85.99 USD

Add to Wish List

Qty

$ 85.99 USD

Add to Wish List

Maintain exact control over your N55’s operating temperatures under demanding street and track conditions with this Rein replacement thermostat unit. Engineered to match factory standards, this complete housing and thermostat assembly ensures your cooling system handles thermal loads flawlessly to prevent heat soak or dangerous overheating.

Show More Show Less

Rein Auxiliary Water Pump - E70 X5

2X Entries Into Our F80 M3 Sweepstakes

T#:58782361

Part#: 64119197085

Ships in 3 Business Days

$ 94.99 USD

Add to Wish List

Qty

$ 94.99 USD

Add to Wish List

Engineered as a direct replacement for failure prone original equipment secondary pumps, this electric water pump ensures steady hot fluid delivery to the heater core regardless of engine RPM. Built with high quality internal bearings, durable motor windings, and high grade composite housings, it withstands continuous thermal cycling and prevents internal electrical failures.

Show More Show Less

Water Pump Service Kit

2X Entries Into Our F80 M3 Sweepstakes

T#:57616369

Part#: WPS0508

Ships in 3 Business Days

$ 1,326.99 USD

Add to Wish List

Qty

$ 1,326.99 USD

Add to Wish List

Replace your aged cooling hardware with confidence and keep your engine running cold when pushed to the limit.

Engine Coolant Expansion Tank Cap

2X Entries Into Our F80 M3 Sweepstakes

T#:59038367

Part#: 17135A1BD89

Ships in 3 Business Days

$ 9.99 USD

Add to Wish List

Qty

$ 9.99 USD

Add to Wish List

Coolant Expansion Tank - With Cap

10X Entries Into Our F80 M3 Sweepstakes

T#:55497428

Part#: 17137640514

Ships on Nov 10, 2026

Sale - Save 10% $ 69.99

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

$ 62.99 USD

Add to Wish List

Qty

Sale - Save 10%

$ 69.99

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

$ 62.99 USD

Add to Wish List

Radiator Fan Clutch

10X Entries Into Our F80 M3 Sweepstakes

T#:56507828

Part#: 11527502804

Ships on Nov 10, 2026

Sale - Save 10% $ 85.99

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

$ 77.39 USD

Add to Wish List

Qty

Sale - Save 10%

$ 85.99

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

$ 77.39 USD

Add to Wish List

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

Add to Wish List

Qty

$ 99.99 USD

Add to Wish List

Engine Water Pump Gasket Kit

2X Entries Into Our F80 M3 Sweepstakes

T#:54317216

Part#: 359.200

Ships on Nov 24, 2026

$ 12.99 USD

Add to Wish List

Qty

$ 12.99 USD

Add to Wish List

This Elring water pump gasket set is the perfect solution for refreshing your BMW's cooling circuit during a water pump service or cooling system overhaul.