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Rein 17-12-8-620-944 Coolant Expansion Tank Vent Hose Upper Radiator to Expansion Tank

Manufacturer

Picture for manufacturer Rein

Part Number

17-12-8-620-944
8 reviews
Sale Price

$32.92

In Stock (10)

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Usually delivered within 2 days

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Product Details

The Rein 17-12-8-620-944 is an OE-quality coolant vent hose that connects the upper radiator hose to the coolant expansion tank on compatible BMW models. Engineered as a direct replacement for BMW OEM part number 17128620944, this hose restores proper coolant circulation and helps prevent overheating caused by a cracked or leaking original hose.

Key Features:

  • Direct OE replacement — matches the original hose in size, shape, and routing with no cutting, refitting, or adjusting required
  • Constructed from premium rubber reinforced to withstand high engine temperatures and cooling system pressures
  • Resistant to heat, oil, salt, road debris, and other engine-bay contaminants
  • Thermoplastic quick-connect fittings mirror the OEM design for a secure, leak-free seal
  • Includes new connectors and o-rings to prevent leaks from reusing worn OEM hardware
  • Manufactured by Rein Automotive (a CRP Automotive brand) to meet or exceed original BMW specifications

Coolant hoses degrade over time, becoming brittle and prone to cracking — often without visible external signs. Replacing this expansion tank vent hose at the first sign of coolant loss or overheating protects the engine and restores the integrity of the cooling system. Cross-reference part numbers: 17 12 8 620 944 / 17128620944 / 17-12-8-620-944.

It fits!!

The online purchasing system is very efficient. I had an issue with the delivery times, and the company quickly corrected the situation to my satisfaction.

WE have not done the install yet. We will let you know if we have any issues. Thank you

So good so far ,

Fast and Easy Thank YOU Richard Suero Digital Marketing /Dietitian Nutritionist 908-956-4925

I just never do top scores

I thought I was getting 10% off my next order but never got that.

The ordering process was simple and the tire was shipped quickly. My overall experience was great and I would order from Motorsport.com again!

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