Rein CHE0425R Engine Coolant Hose - Transmission Oil Cooler Thermostat to Water Pump

OE-Style Coolant Hose for BMW X5

Rein CHE0425R is an application-specific engine coolant hose built as a direct replacement for the original hose assembly on select European vehicles. It is engineered for the 2004-2006 BMW X5 at the transmission oil cooler thermostat to water pump position, with OE-style quick connect fittings and the correct branch shape for a direct fit.

For BMW X5 cooling system service, CHE0425R helps reduce installation time while maintaining the factory routing and connection points. The Rein coolant hose is made from EPDM and built to SAE J20R4-D1 standards for dependable service in demanding underhood conditions.

Key Features

• Direct-fit replacement for the OE coolant hose assembly
• Fits 2004-2006 BMW X5, transmission oil cooler thermostat to water pump
• OE-style thermoplastic quick connect fittings for factory-style connection points
• EPDM hose construction for heat and coolant exposure
• Resistant to heat, salt, road debris, oil, and other contaminants
• Designed to reduce installation time with no cutting, refitting, or adjusting
• Built to SAE J20R4-D1 industry standards

Detailed Description

Rein CHE0425R is a Rein Automotive OE quality water hose designed for European vehicle cooling systems where the original hose assembly uses molded routing and quick-connect ends. This part number is a direct replacement for the factory hose on the 2004-2006 BMW X5, and it matches the OE configuration for the transmission oil cooler thermostat to water pump connection. The hose uses EPDM material and two quick connect fittings to preserve the original fit and connection style.

Because the hose is application specific, it helps avoid the trimming and adaptation often required with universal hoses. The result is a cleaner repair on BMW X5 cooling system service, with fewer opportunities for leaks caused by reusing worn connectors or seals. CHE0425R is also referenced as Genuine 17127509965 for the same application.

What It Helps Fix

• Coolant leaks at the hose or quick-connect interface
• Cracked, swollen, or heat-aged coolant hose material
• Improper fit from previous hose repairs or universal replacements
• Leaks caused by worn connectors or o-rings reused during service
• Cooling system service delays from hoses that require cutting or adjustment

Installation Notes and Tips

Before installation, verify the hose routing and connector style against the removed part on the BMW X5. Inspect the mating surfaces, quick connectors, and sealing points for wear or contamination before assembly. A direct-fit hose like CHE0425R is intended to match the OE layout, so no cutting or refitting should be necessary when the correct application is confirmed.

Quality Assurance

Rein Automotive positions this hose as an OE quality replacement for European vehicles, with factory-style dimensions, molded branches, and thermoplastic quick connect fittings. CHE0425R is built to meet SAE J20R4-D1 requirements and is designed for direct replacement service on the specified BMW X5 applications.