Rein BMW Cooling System Parts & Accessories

Coolant Hose

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T#:393277

Part#: 17127542540

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$ 42.99 USD

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Attaches to the vent port on the expansion tank

Coolant Inlet Hose Section

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T#:388669

Part#: 11537558523

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$ 17.09 USD

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Intercooler Expansion Tank

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T#:584477

Part#: 17137647281

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$ 68.39 USD

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Rein Lower Heater Hose - E30

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T#:379681

Part#: 11531714636

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$ 6.77 USD

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Heats & cools the throttle body

Turbocharger Coolant Return Line

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T#:4826914

Part#: 11539896890

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$ 52.24 USD

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BMW Turbo Cooling Line

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T#:46478582

Part#: CHT0690

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$ 52.98 USD

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Your turbo is constantly working under extreme heat and pressure, generating serious boost every time you get on the gas. The turbo cooling lines are responsible for circulating coolant through the turbocharger, keeping temperatures in check and safeguarding internal components from excessive heat. With time, these lines can corrode, crack, or clog—compromising coolant flow and system efficiency. If left unchecked, a failing line can lead to overheating, loss of performance, or even costly turbo damage. Why replacing them matters: Protect your turbo – Ensures proper cooling to prevent heat soak and extend turbo life. Stop leaks early – Prevent small coolant drips from turning into bigger, more expensive problems. Keep performance consistent – Reliable cooling means steady boost and dependable operation. Don’t let a tired cooling line put your turbo at risk—replace it and keep your forced-induction system performing at its best.

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Rein Coolant Inlet Hose Section - E82, E83, E88, E90, E91, E92, E93 ...

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T#:388668

Part#: 11537535829

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$ 19.94 USD

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Replaces the rubber section of the water pump inlet pipe - includes two clamps

Turbocharger Coolant Return Line

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T#:4826913

Part#: 11538485578

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$ 63.64 USD

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Cylinder 1-4 Turbo Return Line. Keep your turbos healthy and lubricated. Rein quality replacement turbo return line.

Rein Radiator Hose G01 X3 30i, G02 X4 30i

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T#:33913472

Part#: 17127535531

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$ 50.34 USD

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This Radiator Hose is a replacement part designed to ensure optimal coolant flow and long-lasting performance for your vehicle's cooling system. Manufactured with high-quality materials, this hose resists wear and tear caused by extreme temperatures, pressure, and chemical exposure. Turner Motorsport offers radiator hoses that are engineered to meet or exceed OEM specifications, providing a perfect fit for a variety of vehicle makes and models.

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Upper Radiator Hose - Short Section

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T#:592156

Part#: 17122754203

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$ 14.24 USD

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Rein- Coolant Hose F10 535i, F13 640i, F07 535i

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T#:34080749

Part#: 17127580963

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$ 79.79 USD

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Rein Coolant Hose is a premium replacement part designed for BMW models, ensuring efficient and reliable coolant flow throughout the engine’s cooling system. This hose is crucial for regulating engine temperature and preventing overheating, maintaining optimal performance in a wide range of driving conditions. Manufactured to meet or exceed OEM specifications, the Rein Coolant Hose offers a direct-fit solution for easy installation and long-lasting durability. Available through Turner Motorsport, this coolant hose is the ideal upgrade for BMW owners looking to maintain or improve their vehicle’s cooling system.

Specifically designed for BMW models to ensure perfect fit and compatibility
Regulates coolant flow to prevent engine overheating
Constructed from high-quality, heat-resistant materials for durability
Reduces the risk of leaks and cooling system failures
Direct-fit replacement
Meets OEM standards for reliable cooling system performance

Enhance your BMW’s cooling efficiency and engine reliability with the Rein Coolant Hose, providing the necessary protection against overheating and coolant system failure.

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Rein Coolant Hose - E28, E30, E34

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T#:379671

Part#: 13541719966

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$ 5.80 USD

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Thermostat to throttle housing

Upper Radiator Hose

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T#:592162

Part#: 17122754221

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$ 29.44 USD

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OEM Rein Turbocharger Coolant Return Line - BMW & MINI B36 B46/B48 ...

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T#:45757431

Part#: 11539488188

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$ 53.19 USD

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The coolant return hose is responsible for taking cooling from the turbocharger and returning it back to the engine coolant system, allowing a free flow of coolant to keep the turbocharger temperatures under control.

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OEM Rein Water Pump Coolant Hose - BMW F15 F16 N55 3.0L

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T#:45757475

Part#: 11537649394

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This hose connects the primary water pump to the thermostat housing. Coolant hoses can become brittle over time, leading to cracks and coolant leaks. If your coolant hose is leaking, replace it early to prevent coolant loss and eventual overheating.

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Rein Coolant Temperature Sensor - BMW E6X, E7X, E9X

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T#:52516266

Part#: ELC0090

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

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

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T#:53891628

Part#: 11537644811

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$ 274.43 USD

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

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T#:52903294

Part#: 17129844478

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

Rein Coolant Expansion Tank - E60, E61, E63, E64

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T#:402160

Part#: 17137542986

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$ 78.84 USD

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Includes fluid level sensor

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

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T#:55965843

Part#: 171386106612

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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.

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Expansion Tank - 17137617362

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T#:46478556

Part#: EPT0238

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$ 53.28 USD

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These expansion tanks tend to leak and will need replaced

OEM Rein Upper Radiator Hose - E36 325/328/323/M3

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T#:1299

Part#: 11531708499

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$ 12.34 USD

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This is the coolant hose that connects the upper radiator outlet to the thermostat housing. Any time you are into the cooling system, either for a radiator, water pump, thermostat, etc, you should consider installing fresh new hoses as a preventative measure.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1997-1998 Z3 BMW Z3 2.8
1998-2000 Z3 BMW M Roadster M Coupe with S52 engine

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Rein Turbo Charger Cooling Hose - Return

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T#:34080768

Part#: 11537558903

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Turbo Charger Cooling Hose - Return is essential for maintaining the efficiency and performance of your turbocharged vehicle. This high-quality return hose is specifically designed to handle the intense heat and pressure generated by the turbocharger system. Manufactured using durable materials, this cooling hose ensures optimal coolant flow to keep your engine running at peak performance. Available at Turner Motorsport, it’s the perfect upgrade or replacement part for your vehicle’s turbo system.

High-performance cooling solution for turbocharged engines
Ensures efficient coolant circulation to prevent overheating
Manufactured from heat-resistant and durable materials
Direct fit for a hassle-free installation
Designed for long-lasting durability and reliability
Compatible with a variety of makes and models

This Turbo Charger Cooling Hose - Return from Turner Motorsport is the ideal choice for any turbocharged engine, ensuring your vehicle operates smoothly and efficiently.

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Water Pump

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T#:38161720

Part#: 11517632426

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$ 743.84 USD

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OEM Rein Radiator Cap - E21 E24 E10 E12 E23 E28

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T#:7395

Part#: 17111100848

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$ 11.39 USD

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The radiator 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. Often times, the coolant is not kept under enough pressure to keep it from boiling or expanding too much. This cap keeps all the heat and liquid inside the coolant system for maximum efficiency. Should be replaced each time major coolant system service is performed.

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BMW Radiator Hose Kit - 17123413819

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T#:46719171

Part#: CHK0198

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$ 47.22 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 Coolant Expansion Tank - 17139485733

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T#:45791753

Part#: 17139485733

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$ 50.03 USD

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Expansion tanks take constant abuse from high heat and harsh coolant, making them prone to cracking or failure over time. A damaged tank can quickly lead to overheating and serious engine damage, so replacement is critical at the first sign of trouble. Features: Direct fitment for hassle-free installation Precision-molded to OE specs for perfect sensor and hose connections Durable construction stands up to extreme heat and coolant chemicals Factory pressure-tested for reliable performance

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BMW Radiator Hose Kit - 17127575427

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T#:46719185

Part#: CHK0583

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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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Expansion Tank With Cap

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T#:46616025

Part#: EPK0138

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$ 68.25 USD

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The coolant expansion tank allows excess coolant to flow in and out as temperatures rise and fall. Over time, repeated exposure to extreme temperature changes can cause the tank to crack, split, or break. To keep your cooling system sealed and functioning properly, any tank showing signs of damage—such as cracks, broken nipples, or compromised mounting points—should be replaced.

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Rein Water Pump Service Kit - N20

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T#:14023854

Part#: 11518635089-2

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$ 725.00 USD

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Kits include: water pump thermostat assembly head to thermostat hose w/ aluminum flange WP to engine hose WP to thermostat hose all necessary clamps and hardware This Rein water pump service kit addresses common coolant hose plastic flange failure and ensures that the water pump replacement repair is done right the first time. The water pump and thermostat are OEM Use of OE or Pentosin NF-G11 coolant is recommended

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

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T#:55857776

Part#: 17128602669

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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.

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Rein Turbo Cooling Line - Return

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T#:17771598

Part#: 11538663517

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Rein turbo hoses are manufactured with premium OE quality material to offer maximum protection from premature failures.

OEM Rein Water Pump W/ Installation Kit - BMW E82/88 E9X N52 3.0L ...

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T#:45997535

Part#: WPS0502

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$ 770.77 USD

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Rein Electric Water Pump Replacement Kits offer a valuable solution to failure-prone cooling-related components on the N52 BMW engine platforms. At the heart of these kits are OEM electric water pumps, which are complemented by Rein's problem solver hoses.

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OEM Rein Lower Radiator Hose - E39 528i

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T#:349032

Part#: 11531740481

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Runs from the radiator to the thermostat housing. 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 Coolant Hose Supply Elbow - F22 F23 F30 F32 F33 F36 F87 - N55 ...

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T#:53820908

Part#: CHE0985

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$ 24.69 USD

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The Rein coolant hose elbow is a targeted engineering solution designed to bypass the flaws of the factory assembly. By isolating the failure prone rubber section, it allows for replacement without disturbing the exhaust manifold or cylinder head connections. This is the strategic choice for teams and technicians who prioritize rapid turnaround and system integrity.

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

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T#:55965839

Part#: 17138610661

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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.

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Rein Engine Coolant Reservoir - BMW G1X, G3X

2X Entries Into Our F80 M3 Sweepstakes

T#:52516268

Part#: EPT0274

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$ 109.24 USD

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

Rein Coolant Expansion Tank - E65, E66

2X Entries Into Our F80 M3 Sweepstakes

T#:593077

Part#: 17137647713

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$ 94.99 USD

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Replace your cracked or faded tank

Cooling Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:594371

Part#: 17127582894

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Sale - Save 5% $ 56.99

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$ 54.14 USD

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Replacement cooling hose from Rein

Radiator Hose Lower

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T#:592175

Part#: 17127515489

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$ 21.84 USD

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Rein - Throttle Body Hose - E36 318i, Z3 1.9

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T#:33980410

Part#: 11531247398

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$ 6.49 USD

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Throttle Body Hose by Rein is a key component designed to optimize airflow to your BMW’s engine, ensuring enhanced throttle response and overall engine performance. This hose connects the air intake system to the throttle body, delivering a precise flow of air that improves fuel efficiency and engine power. Manufactured from high-quality, heat-resistant materials, the Throttle Body Hose by Rein is built to withstand extreme temperatures and pressures, making it a durable and long-lasting solution for your BMW. Available at Turner Motorsport, this hose is a direct fit replacement, ensuring easy installation and perfect compatibility with OEM standards.

Optimizes airflow to the throttle body, improving engine performance and efficiency
Enhances throttle response, contributing to smoother acceleration
Constructed from durable, heat-resistant materials, ensuring long-lasting performance
Direct fit replacement, allowing for easy installation and OEM compatibility
Boosts overall engine efficiency, improving fuel economy and engine power

Turner Motorsport offers the Throttle Body Hose by Rein as a reliable solution to maintain your BMW’s air intake system, ensuring smooth and efficient engine operation.

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Water Pump

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T#:46478542

Part#: WPR0046

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$ 755.36 USD

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$ 755.36 USD

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Don't take your car's cooling system for granted. A waterpump failure can cost you an engine, which is why preventatively replacing your BMWs waterpump and refreshing the cooling system every 60,000 miles. The water pump is a weak point is the cooling system. Replacing your waterpump will go a long way for keeping your car on the road and operating properly. This water pump fits many 2006 and newer BMW 6 cylinder engines, specifically all the BMWs with the N51, N52, N53 engines. You will also need to purchase replacement aluminum screws Part #11510392553

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Pump To Radiator Hose Upper

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T#:592187

Part#: 17127515989

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$ 18.04 USD

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Upper Radiator Hose

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T#:592200

Part#: 17127556614

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$ 16.14 USD

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BMW Radiator Hose Kit - 17127536231

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T#:46719187

Part#: CHK0373R

Ships in 3 Business Days

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$ 63.54 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 Radiator Hose Kit - 17127531581

2X Entries Into Our F80 M3 Sweepstakes

T#:46719188

Part#: CHK0462

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$ 41.73 USD

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$ 41.73 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 Hose w/ Temperature Sensor - BMW E60 E63/E64 E65/E66...

2X Entries Into Our F80 M3 Sweepstakes

T#:375746

Part#: 17127508011

In Stock at Vendor

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08-31-2026

$ 72.19 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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Rein - Radiator To Auto Trans Oil Cooler - Water Hose - E70 X5 ...

2X Entries Into Our F80 M3 Sweepstakes

T#:34114219

Part#: 17127537101

Ships in 3 Business Days

Sale - Save 5% $ 55.99

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$ 53.19 USD

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Water Hose - Radiator To Auto Trans Oil Cooler is a critical component designed to maintain the optimal performance of your BMW’s cooling system. This high-quality hose ensures efficient coolant transfer from the radiator to the automatic transmission oil cooler, preventing overheating and protecting essential engine components. Available at Turner Motorsport, this durable hose is engineered to handle high temperatures and pressure, making it a perfect replacement or upgrade for your vehicle’s cooling system.

Designed for BMW automatic transmissions
Ensures proper coolant flow between the radiator and transmission oil cooler
Prevents overheating of vital engine and transmission components
Manufactured from heat-resistant, durable materials for longevity
Direct-fit replacement for easy installation
Helps maintain engine efficiency and cooling performance

The Water Hose - Radiator To Auto Trans Oil Cooler from Turner Motorsport is the ideal solution to ensure your BMW’s cooling system functions smoothly, offering long-term reliability and protection for your engine and transmission.

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