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Rein BMW Coolant & Radiator Hoses

We offer replacement hoses from several OE brands that we trust, along with performance silicone upgrades for those who want increased wear resistance compared to factory rubber.
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OEM Rein Coolant Expansion Tank Overflow Hose - BMW F25 X3, F26 X4 N52 N20 N55
OEM Rein Coolant Expansion Tank Overflow Hose - BMW F25 X3, F26 X4 N5...
2X Entries Into Our F80 M3 Sweepstakes
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T#:45757476
Part#: 17128651298
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$ 31.99 USD
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$ 31.99 USD
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This hose connects the expansion tank to the upper radiator hose. If your coolant expansion tank hose is cracked or leaking, replace it early to prevent further coolant loss and eventual overheating.
Expansion Tank Hose
Expansion Tank Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:379785
Part#: 17111737819
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$ 26.99 USD
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$ 26.99 USD
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Connects the expansion tank to the radiator
Return Hose
Return Hose
2X Entries Into Our F80 M3 Sweepstakes
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T#:17704695
Part#: 11537637059
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$ 59.99 USD
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$ 59.99 USD
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OE quality return hose for the cooling system.
OEM Radiator Water Valve Hose - Left - E38 740
OEM Radiator Water Valve Hose - Left - E38 740
2X Entries Into Our F80 M3 Sweepstakes
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T#:11094
Part#: 64218391122
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$ 6.54 USD
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$ 6.54 USD
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This is the hose that runs from the left radiator 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.

 

This item fits the following BMWs: 
1999-2001 E38 BMW 740i 740il

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Coolant Hose
Coolant Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:592009
Part#: 17127563852
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$ 39.99 USD
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$ 39.99 USD
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Connects the transmission heat exchange to the coolant return line
OEM Rein Coolant Expansion Tank Hose - BMW G01 G02 Gen1 B46
OEM Rein Coolant Expansion Tank Hose - BMW G01 G02 Gen1 B46
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:45757474
Part#: 17127535528
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$ 53.99

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

$ 51.99 USD
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$ 51.99 USD
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This hose connects the cylinder head to the expansion tank's upper 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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OEM Rein Coolant Supply Hose - E65 E66
OEM Rein Coolant Supply Hose - E65 E66
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:375745
Part#: 17127508010
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$ 134.99 USD
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$ 134.99 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.
Coolant Hose
Coolant Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:379702
Part#: 17127508014
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$ 25.99 USD
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$ 25.99 USD
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This is the return hose that attaches from the water pump to the radiator
Upper Radiator Hose
Upper Radiator Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:12806792
Part#: 17129802110
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$ 52.99 USD
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$ 52.99 USD
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Rein - Radiator Expansion Tank Vent Line Hose - F10 528i, F10 528iX
Rein - Radiator Expansion Tank Vent Line Hose - F10 528i, F10 528iX ...
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:34080737
Part#: 17128651450
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$ 57.99 USD
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$ 57.99 USD
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Radiator Expansion Tank Vent Line Hose is an essential component designed to maintain the proper functioning of your BMW’s cooling system. This high-quality hose ensures that excess pressure is properly vented from the radiator expansion tank, helping to prevent overheating and coolant leaks. Built to meet or exceed OEM standards, the Radiator Expansion Tank Vent Line Hose offers a direct-fit solution for reliable and efficient performance. Available through Turner Motorsport, this hose ensures long-lasting durability and a seamless installation process.

  • Designed specifically for BMW models, ensuring perfect fit and compatibility
  • Helps regulate pressure within the radiator expansion tank, preventing overheating
  • Reduces the risk of coolant leaks and engine damage
  • Manufactured from durable, heat-resistant materials for long-lasting performance
  • Easy, direct-fit replacement for hassle-free installation
  • Meets or exceeds OEM specifications for superior reliability and efficiency

Upgrade your BMW’s cooling system with the Radiator Expansion Tank Vent Line Hose to ensure optimal engine performance and prevent costly repairs.

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BMW Radiator Hose Kit - 11537830715
BMW Radiator Hose Kit - 11537830715
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:46719180
Part#: CHK0376R
Ships in 3 Business Days
$ 43.99 USD
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$ 43.99 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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Coolant Hose
Coolant Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:57616350
Part#: 11537643177
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$ 64.99 USD
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$ 64.99 USD
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Maintain maximum thermal efficiency on the track or the street with this precision-engineered turbocharger coolant line by Rein.

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