Rein BMW Cooling System Parts & Accessories

Coolant Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:591989

Part#: 17127519254

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Sale - Save 12% $ 48.48

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$ 42.74 USD

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Attaches to the vent port on the expansion tank

OEM Rein Coolant Hose - E60 E61 E83 Z4

2X Entries Into Our F80 M3 Sweepstakes

T#:583591

Part#: 11537519494

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08-31-2026

$ 18.04 USD

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Attaches from inlet pipe to heat exchanger. Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

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Water Hose With O-Ring - Cylinder Head To Thermostat Housing ...

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T#:594306

Part#: 11537591889

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05-07-2026

$ 27.54 USD

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Replacement Water Hose With O-Ring from Rein

Rein Radiator Mount

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T#:17804812

Part#: 17117575248

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$ 13.29 USD

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Rein OE equivalent mounts are produced with high-quality materials to ensure maximum life and a smooth ride.

Radiator Hose - Engine To Radiator

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T#:594372

Part#: 17127612444

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Sale - Save 5% $ 57.99

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$ 55.09 USD

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Replacement Radiator Hose - Engine To Radiator from Rein

OEM Rein Coolant Hose - BMW E60 E63/E64 E65/E66

2X Entries Into Our F80 M3 Sweepstakes

T#:45791754

Part#: 17127508011R

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Sale - Save 6% $ 35.99

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$ 33.75 USD

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This hose runs from the lower radiator port on the passenger side of the radiator to the water pump on the engine. Rubber hoses can crack over time, leading to coolant loss. Replace your hose with this OEM Rein hose to eliminate leaks and prevent overheating.

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OEM Rein Thermostat Coolant Hose - E30 M20

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T#:583586

Part#: 13541289976

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$ 8.37 USD

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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

OEM Rein Lower Radiator Hose - E34 525i

2X Entries Into Our F80 M3 Sweepstakes

T#:6962

Part#: 11531722852

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$ 12.34 USD

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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

OE Rein Upper Radiator Hose - E39 540i, E38 740i/IL 1996-1998 ...

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T#:6976

Part#: 11531745595

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$ 16.14 USD

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ENGINE WATER HOSE 11531745595.--

This item fits the following BMWs:
BMW 5 Series - 540i, 540i Wagon
BMW 7 Series - 740i, 740iL

--.

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Rein Reservoir Hose R50 / R52

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T#:34114213

Part#: 17127526414

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08-31-2026

$ 8.71 USD

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Reservoir Hose CHE0885 is a top-quality replacement part designed for BMW vehicles, ensuring a reliable connection between your vehicle’s reservoir and cooling system. Engineered for durability and heat resistance, this hose provides a seamless flow of coolant to maintain optimal engine temperature, preventing overheating. Reservoir Hose CHE0885 is made to meet or exceed OEM specifications, ensuring a perfect fit for your BMW. Available through Turner Motorsport, this hose is an essential component for keeping your vehicle's cooling system functioning efficiently.

High-quality reservoir hose for BMW vehicles
Ensures reliable coolant flow for optimal engine performance
Made from heat-resistant, durable materials
Prevents overheating and engine damage
Meets or exceeds OEM specifications
Perfect fit for a variety of BMW models
Available from trusted supplier Turner Motorsport
Easy to install with secure connections

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OEM Rein Coolant Expansion Tank Overflow Hose - BMW G30 530e, G12 740...

2X Entries Into Our F80 M3 Sweepstakes

T#:45757471

Part#: 17125A02485

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Sale - Save 5% $ 41.99

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08-31-2026

$ 39.89 USD

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This hose connects the expansion tank to the radiator. If your coolant expansion tank hose is cracked or leaking, replace it early to prevent further coolant loss and eventual overheating.

OEM Rein Radiator Return Hose - BMW E60 525i 530i M54

2X Entries Into Our F80 M3 Sweepstakes

T#:15115

Part#: 17127519257

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Sale - Save 5% $ 58.90

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08-31-2026

$ 55.96 USD

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Radiator hoses can become brittle over time, leading to cracks and leaks. Replace yours with this OEM Rein coolant hose to ensure your cooling system remains leak free for years to come.

OEM Rein Lower Radiator Coolant Hose - E70 E71 F15 F16 N63

2X Entries Into Our F80 M3 Sweepstakes

T#:17738371

Part#: 17127576358

In Stock at Vendor

Sale - Save 5% $ 72.99

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08-31-2026

$ 69.34 USD

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Rein Coolant Hose CHK0722 is a high-performance replacement hose that connects the lower radiator to the water pump.

OEM Rein Upper Radiator Hose - M42 E30 318i/is

2X Entries Into Our F80 M3 Sweepstakes

T#:6953

Part#: 11531717622

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Sale - Save 5% $ 11.99

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08-31-2026

$ 11.39 USD

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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure. This hose replaces the upper radiator hose that connects from the thermostat housing to the radiator inlet.

OEM Rein radiator hoses are always a perfect option when performing maintenance thanks to their high quality and longevity.

This item fits the following BMWs:
E30 BMW 318i, 318i Convertible, 318is

Fits BMW Engines including:
M42

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OEM Rein Expansion Tank Hose - E53 X5 N62 4.4L 4.8L

2X Entries Into Our F80 M3 Sweepstakes

T#:379797

Part#: 17127509966

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Sale - Save 5% $ 32.99

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08-31-2026

$ 31.34 USD

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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

Fits the following BMWs:
2003+ E53 BMW X5 N62 4.4L 4.8L

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Rein Coolant Expansion Tank - With Cap

2X Entries Into Our F80 M3 Sweepstakes

T#:53891623

Part#: 17135A6A030C

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Sale - Save 6% $ 99.99

This product was last offered at the strikethrough price on
08-31-2026

$ 94.07 USD

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Replace your old brittle expansion tank

Rein Expansion Tank Return Hose - E60, E61

2X Entries Into Our F80 M3 Sweepstakes

T#:591993

Part#: 17127519258

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Sale - Save 5% $ 56.99

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08-31-2026

$ 54.14 USD

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Connects between the top of the radiator and the bottom of the expansion tank

BMW Water Pump Kit - 11517632426

2X Entries Into Our F80 M3 Sweepstakes

T#:46615999

Part#: WPS0507

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Sale - Save 5% $ 961.99

This product was last offered at the strikethrough price on
08-31-2026

$ 913.54 USD

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Late-model external water pumps are typically more dependable and easier to service, with no gasket or O-ring to worry about. Replacing higher-mileage units during routine cooling system maintenance is a smart way to add extra peace of mind.

Late-model external water pumps have the advantage of being generally more reliable, while also being easier to service, not requiring a gasket or o-ring. Replacing high mileage units during cooling system services provides peace of mind.

Includes:

Water pump
Thermostat assembly
Water pump elbow
Coolant hoses
Necessary hardware

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OEM Rein Coolant Supply Hose - BMW E60 525i 530i M54

2X Entries Into Our F80 M3 Sweepstakes

T#:340691

Part#: 17127519255

In Stock at Vendor

Sale - Save 5% $ 66.28

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08-31-2026

$ 62.97 USD

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Attaches between upper radiator connection radiator and the thermostat housing

Cool Retrun Hose

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T#:379713

Part#: 17127540666

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Sale - Save 5% $ 80.99

This product was last offered at the strikethrough price on
08-31-2026

$ 76.94 USD

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Connects to the radiator

Rein Water Hose - Water Hose To Thermostat Inlet

2X Entries Into Our F80 M3 Sweepstakes

T#:17738370

Part#: 11537589949

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Sale - Save 5% $ 45.99

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08-31-2026

$ 43.69 USD

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Prevents leaks and comebacks from reusing old quick connects and o-rings.

OEM Rein Coolant Expansion Tank Hose - BMW G01 G02 Gen1 B46

2X Entries Into Our F80 M3 Sweepstakes

T#:45757473

Part#: 17127535536

Back Ordered

Sale - Save 8% $ 76.00

This product was last offered at the strikethrough price on
05-15-2026

$ 70.20 USD

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$ 76.00

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$ 70.20 USD

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This hose connects the heat management module to the expansion tank's lower port. If your coolant expansion tank hose is cracked or leaking, replace it early to prevent further coolant loss and eventual overheating.

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Rein Coolant Expansion Tank - E70

2X Entries Into Our F80 M3 Sweepstakes

T#:592023

Part#: 17137647290

Ships in 4 Business Days

Sale - Save 5% $ 85.99

This product was last offered at the strikethrough price on
08-31-2026

$ 81.69 USD

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Plastic expansion tanks have a limited lifespan - replace every 80,000 miles

BMW Radiator Hose - 11531705224

2X Entries Into Our F80 M3 Sweepstakes

T#:46719192

Part#: CHK0005

In Stock at Vendor

Sale - Save 5% $ 43.99

This product was last offered at the strikethrough price on
08-31-2026

$ 41.79 USD

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Keep your cooling system sealed, strong, and ready for anything with this Rein radiator hose—your all-in-one fix for cracked, leaking, or worn factory hoses. Years of heat, pressure, and age can cause rubber to weaken, split, or swell, setting the stage for coolant leaks and potential overheating. Rein hoses are engineered to meet or exceed OEM standards, built from premium, heat-resistant materials that can take on extreme temperatures and system pressures without faltering. Each hose features factory-correct bends, fittings, and diameters for an exact, hassle-free installation—no cutting or forcing required. Whether you’re tackling a full cooling system refresh or chasing down a small coolant leak, this Rein kit provides everything needed to restore confidence and performance under the hood. Why choose this Rein radiator hose: Factory-level precision – Direct-fit replacements that deliver OEM-quality reliability. Built to last – Resists cracking, swelling, and chemical damage from daily heat cycling. Confidence restored – Prevents coolant loss, overheating, and on-road breakdowns. All-in-one upgrade – Includes upper and lower hoses for a complete system refresh. If keeping your BMW’s cooling system running tight and trouble-free is the goal, Rein brings the dependable quality and fitment you can count on—engineered to perform just like factory, mile after mile.

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Expansion Tank Mounting Plate

2X Entries Into Our F80 M3 Sweepstakes

T#:591946

Part#: 17101439110

Ships in 4 Business Days

Sale - Save 5% $ 80.99

This product was last offered at the strikethrough price on
08-31-2026

$ 76.94 USD

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BMW Radiator Hose Kit - 17127509963

2X Entries Into Our F80 M3 Sweepstakes

T#:46719193

Part#: CHK0032P

Ships in 4 Business Days

Sale - Save 6% $ 76.99

This product was last offered at the strikethrough price on
08-31-2026

$ 72.66 USD

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Keep your cooling system sealed, strong, and ready for anything with this Rein radiator hose kit—your all-in-one fix for cracked, leaking, or worn factory hoses. Years of heat, pressure, and age can cause rubber to weaken, split, or swell, setting the stage for coolant leaks and potential overheating. Rein hoses are engineered to meet or exceed OEM standards, built from premium, heat-resistant materials that can take on extreme temperatures and system pressures without faltering. Each hose features factory-correct bends, fittings, and diameters for an exact, hassle-free installation—no cutting or forcing required. Whether you’re tackling a full cooling system refresh or chasing down a small coolant leak, this Rein kit provides everything needed to restore confidence and performance under the hood. Why choose this Rein radiator hose kit: Factory-level precision – Direct-fit replacements that deliver OEM-quality reliability. Built to last – Resists cracking, swelling, and chemical damage from daily heat cycling. Confidence restored – Prevents coolant loss, overheating, and on-road breakdowns. All-in-one upgrade – Includes upper and lower hoses for a complete system refresh. If keeping your BMW’s cooling system running tight and trouble-free is the goal, Rein brings the dependable quality and fitment you can count on—engineered to perform just like factory, mile after mile.

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OEM Rein Coolant Line - E38

2X Entries Into Our F80 M3 Sweepstakes

T#:379758

Part#: 64218377662

Ships in 4 Business Days

Sale - Save 5% $ 15.99

This product was last offered at the strikethrough price on
08-31-2026

$ 15.19 USD

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$ 15.99

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Runs from the right heater core to the water valve. Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

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Coolant Hose from Expansion Tank - E36

2X Entries Into Our F80 M3 Sweepstakes

T#:6964

Part#: 11531730351

Ships in 2 Business Days

Sale - Save 5% $ 18.79

This product was last offered at the strikethrough price on
08-31-2026

$ 17.85 USD

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This coolant hose connects the water hose part #11531738053 to the radiator coolant expansion tank.Fits E36 3 series with M50, S50 or S52 engine.

This item fits the following BMWs:
1992-1998 E36 BMW 325i 325is 325ic M3

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Water Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:594317

Part#: 17127560974

Ships in 4 Business Days

Sale - Save 5% $ 37.99

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08-31-2026

$ 36.09 USD

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$ 37.99

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Radiator to Auto Trans Oil Cooler

Radiator Hose - Radiator To Thermostat Housing

2X Entries Into Our F80 M3 Sweepstakes

T#:594376

Part#: 17127610704

Ships in 4 Business Days

Sale - Save 41% $ 31.99

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

$ 18.99 USD

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$ 31.99

This product was last offered at the strikethrough price on
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Replacement Radiator Hose - Radiator To Thermostat Housing from Rein

Rein Water Pipe With O-Rings

2X Entries Into Our F80 M3 Sweepstakes

T#:17704768

Part#: 11537519710

Ships in 4 Business Days

Sale - Save 5% $ 46.99

This product was last offered at the strikethrough price on
08-31-2026

$ 44.64 USD

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$ 46.99

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Water pipes are essential for proper cooling. If they are cracked, they are going to need to be replaced as soon as possible to avoid overheating your engine.

BMW Radiator Hose Kit - 17127519257

2X Entries Into Our F80 M3 Sweepstakes

T#:46719182

Part#: CHK0033

Ships in 4 Business Days

Sale - Save 5% $ 66.99

This product was last offered at the strikethrough price on
08-31-2026

$ 63.39 USD

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Keep your cooling system sealed, strong, and ready for anything with this Rein radiator hose kit—your all-in-one fix for cracked, leaking, or worn factory hoses. Years of heat, pressure, and age can cause rubber to weaken, split, or swell, setting the stage for coolant leaks and potential overheating. Rein hoses are engineered to meet or exceed OEM standards, built from premium, heat-resistant materials that can take on extreme temperatures and system pressures without faltering. Each hose features factory-correct bends, fittings, and diameters for an exact, hassle-free installation—no cutting or forcing required. Whether you’re tackling a full cooling system refresh or chasing down a small coolant leak, this Rein kit provides everything needed to restore confidence and performance under the hood. Why choose this Rein radiator hose kit: Factory-level precision – Direct-fit replacements that deliver OEM-quality reliability. Built to last – Resists cracking, swelling, and chemical damage from daily heat cycling. Confidence restored – Prevents coolant loss, overheating, and on-road breakdowns. All-in-one upgrade – Includes upper and lower hoses for a complete system refresh. If keeping your BMW’s cooling system running tight and trouble-free is the goal, Rein brings the dependable quality and fitment you can count on—engineered to perform just like factory, mile after mile.

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OEM Rein Lower Radiator Hose - M42 E30 318i/is

2X Entries Into Our F80 M3 Sweepstakes

T#:6952

Part#: 11531717620

In Stock at Vendor

Sale - Save 5% $ 16.99

This product was last offered at the strikethrough price on
08-31-2026

$ 16.14 USD

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$ 16.99

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$ 16.14 USD

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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure. This hose replaces the lower radiator hose that connects from the radiator outlet to the thermostat housing.

OEM Rein radiator hoses are always a perfect option when performing maintenance thanks to their high quality and longevity.

This item fits the following BMWs:
E30 BMW 318i, 318i Convertible, 318is

Fits BMW Engines including:
M42

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BMW Radiator Hose Kit - 11537500750

2X Entries Into Our F80 M3 Sweepstakes

T#:46753499

Part#: CHK0030R

Ships in 4 Business Days

Sale - Save 6% $ 50.99

This product was last offered at the strikethrough price on
08-31-2026

$ 48.03 USD

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$ 50.99

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$ 48.03 USD

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Keep your cooling system sealed, strong, and ready for anything with this Rein radiator hose kit—your all-in-one fix for cracked, leaking, or worn factory hoses. Years of heat, pressure, and age can cause rubber to weaken, split, or swell, setting the stage for coolant leaks and potential overheating. Rein hoses are engineered to meet or exceed OEM standards, built from premium, heat-resistant materials that can take on extreme temperatures and system pressures without faltering. Each hose features factory-correct bends, fittings, and diameters for an exact, hassle-free installation—no cutting or forcing required. Whether you’re tackling a full cooling system refresh or chasing down a small coolant leak, this Rein kit provides everything needed to restore confidence and performance under the hood. Why choose this Rein radiator hose kit: Factory-level precision – Direct-fit replacements that deliver OEM-quality reliability. Built to last – Resists cracking, swelling, and chemical damage from daily heat cycling. Confidence restored – Prevents coolant loss, overheating, and on-road breakdowns. All-in-one upgrade – Includes upper and lower hoses for a complete system refresh. If keeping your BMW’s cooling system running tight and trouble-free is the goal, Rein brings the dependable quality and fitment you can count on—engineered to perform just like factory, mile after mile.

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BMW Expansion Tank With Cap - 17138570079

2X Entries Into Our F80 M3 Sweepstakes

T#:46616019

Part#: EPK0146

Ships in 4 Business Days

Sale - Save 6% $ 93.99

This product was last offered at the strikethrough price on
08-31-2026

$ 88.70 USD

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$ 93.99

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$ 88.70 USD

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The coolant expansion tank serves as a reservoir for excess coolant as it expands and contracts with changing temperatures. Since it’s constantly exposed to extreme heat cycles, it can eventually crack, split, or suffer broken nipples or mounting points. To keep your cooling system sealed and operating properly, any damaged tank should be replaced.

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Water Hose - Thermostat Hose To Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:594318

Part#: 17127624676

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08-31-2026

$ 37.99 USD

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This product was last offered at the strikethrough price on
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Replacement water hose from Rein

Rein Coolant Hose - E70

2X Entries Into Our F80 M3 Sweepstakes

T#:591811

Part#: 11537547244

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$ 38.94 USD

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Coolant hose that runs from the inlet to thermostat

Rein Water Pump to Thermostat Hose - E70

2X Entries Into Our F80 M3 Sweepstakes
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T#:591813

Part#: 11537550062

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$ 39.83 USD

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Replace your leaking hose with this direct-fit option from Rein

Rein Coolant Return Hose - E60

2X Entries Into Our F80 M3 Sweepstakes

T#:591987

Part#: 17127519249

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$ 53.19 USD

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Attaches from radiator to water pump inlet

Module Bracket

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T#:639804

Part#: 17117575247

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$ 19.94 USD

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This is the left side radiator bracket.

OEM Rein Heater Coolant Hose - E53

2X Entries Into Our F80 M3 Sweepstakes

T#:12845

Part#: 64218409063

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$ 10.44 USD

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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

Rein Thermostat Assembly E38 740iL

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T#:34114233

Part#: 11531437526

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$ 65.54 USD

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Regulates Engine coolant temperature. Comes with aluminum housing, O-ring, and sensor.

OEM Rein Coolant Supply Hose - E38 740i/il

2X Entries Into Our F80 M3 Sweepstakes

T#:379736

Part#: 64218371386

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Runs from the water valve to the Right heater core inlet. Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

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Expansion Tank Vent Hose

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T#:379672

Part#: 17127508013

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$ 57.94 USD

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A commonly leaking hose

Rein Radiator Hose - Lower - Z4

2X Entries Into Our F80 M3 Sweepstakes

T#:386347

Part#: 17127535591

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This product was last offered at the strikethrough price on
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$ 56.99 USD

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Keep your cooling system leak free

Coolant hose

2X Entries Into Our F80 M3 Sweepstakes

T#:593459

Part#: 64218390355

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$ 13.29 USD

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Water Hose - Expansion Tank to Radiator (Vent Hose) F10 528i ...

2X Entries Into Our F80 M3 Sweepstakes

T#:34080754

Part#: 17127578405

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$ 45.59 USD

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Water Hose - Expansion Tank to Radiator (Vent Hose) is an essential component for maintaining the proper function of your BMW’s cooling system. This high-quality hose ensures efficient coolant flow between the expansion tank and radiator, preventing overheating and reducing the risk of coolant leaks. Designed to meet or exceed OEM specifications, the Water Hose - Expansion Tank to Radiator (Vent Hose) provides a perfect fit for reliable, long-lasting performance. Available through Turner Motorsport, this hose is a direct-fit replacement that ensures seamless installation and superior engine cooling.

Specifically engineered for BMW models to guarantee a perfect fit
Ensures proper coolant flow between the expansion tank and radiator
Prevents overheating and reduces the risk of coolant leaks
Made from durable, heat-resistant materials for long-lasting performance
Direct-fit replacement for easy installation without modifications
Meets or exceeds OEM specifications for reliable performance

Upgrade your BMW’s cooling system with the Water Hose - Expansion Tank to Radiator (Vent Hose), ensuring optimal engine performance and protection against overheating.

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OEM Rein Coolant Hose - E53 X5

2X Entries Into Our F80 M3 Sweepstakes

T#:379748

Part#: 64218409064

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08-31-2026

$ 12.34 USD

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$ 12.34 USD

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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

OEM Rein Oil Cooler Coolant Hose - E70 X5 xDrive30i

2X Entries Into Our F80 M3 Sweepstakes

T#:583589

Part#: 11537609944

Ships in 4 Business Days

Sale - Save 5% $ 33.99

This product was last offered at the strikethrough price on
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$ 32.29 USD

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Coolant hose that runs from the inlet to thermostat. Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

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Rein Engine Coolant Hose - BMW G11, G30 5

2X Entries Into Our F80 M3 Sweepstakes

T#:52516262

Part#: CHE0993

Ships in 4 Business Days

Sale - Save 5% $ 64.99

This product was last offered at the strikethrough price on
08-31-2026

$ 61.74 USD

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

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