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REIN AUTOMOTIVE Water Hose - CHE0493

REIN Expansion Tank Return Hose

REIN AUTOMOTIVE
Availability:
5+ in stock, ready to be shipped

Ships same or next business day

SKU 17127519258
$59.19 - $59.19
$59.19
$59.19 - $59.19
$59.19
CALIFORNIA WARNING

Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

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This REIN expansion tank return hose is a direct replacement for BMW 525i and 530i (2004-2005 E60) models. It carries coolant from the expansion tank back to the radiator, ensuring proper cooling system function. Built to OEM standards for a perfect fit and long service life.

Key Features & Benefits

  • Direct Fit: Matches original hose routing and connections for easy replacement.
  • OEM Quality: Manufactured to meet strict factory specifications.
  • Durable Material: Uses reinforced hose material resistant to heat and coolant chemicals.
  • Includes Gaskets: Often includes necessary sealing rings for leak-free installation.

Vehicle Fitment

Make Model Years Engine
BMW 530i 2004–2005 3.0L6
BMW 525i 2004–2005 2.5L6

Technical Specifications

Part Number 17127519258
Type Expansion Tank Return Hose
Material Reinforced Rubber

Installation Notes

Professional installation recommended.

About REIN

REIN Automotive is a trusted manufacturer of cooling system components for European vehicles, known for quality and reliability.

This part also goes by the following cross reference.

Cross Reference Part Number: 17127519258

Fits These Vehicles 2 applications
E60 5 Series
Make Model Engine Years
BMW 530i 3.0L6 2004–2005
BMW 525i 2.5L6 2004–2005
Fits 2 vehicle applications Check vehicle fitment before ordering View fitment

About this Coolant Hose

The REIN AUTOMOTIVE 17127519258 coolant hose carries coolant between the engine, radiator, heater core or expansion tank. Hoses age from heat and pressure, and a single failed hose can empty the cooling system and overheat the engine within minutes.

Frequently asked questions

What are the signs of a failing coolant hose?

Coolant drips or dried coolant residue, a sweet smell, a hose that feels soft, swollen or cracked, a low-coolant warning, or rising engine temperature. Squeeze hoses when the engine is cold: a healthy hose feels firm but flexible.

What should I replace along with the hose?

Replace any clamps, O-rings or seals at the connections. Many European cars use plastic quick-connect fittings that become brittle with age, so inspect neighbouring hoses and fittings while the system is drained.

What coolant should I use?

Use the coolant type your car's manufacturer specifies, mixed to the correct ratio. Mixing incompatible coolants can cause deposits and reduce protection.

Can I replace a coolant hose myself?

Usually, yes. Let the engine cool completely before opening the system, catch and dispose of old coolant properly, and bleed the air out of the system afterwards following your car's procedure; trapped air can cause overheating.

How do I make sure this coolant hose fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

Euromotiv is an independent retailer of OEM, Genuine, and aftermarket automotive parts. We are not affiliated with, endorsed by, or authorized by Audi AG, Volkswagen AG, BMW AG, Mercedes-Benz Group AG, Dr. Ing. h.c. F. Porsche AG, MINI, or any other vehicle manufacturer. All trademarks, logos, and brand names are the property of their respective owners and are used solely for identification and compatibility purposes.