Rein CHE0175R Engine Coolant Hose - Expansion Tank Inlet

OE Quality Coolant Hose for BMW

Rein CHE0175R is an OE-quality engine coolant hose for European cooling systems, built as a direct replacement for the original hose assembly. It is designed for BMW applications including the expansion tank inlet on select 1996-2000 BMW 323i, 323is, 328i, 328is, M3, and Z3 models.

• Direct-fit replacement for the original BMW coolant hose assembly
• Application-specific design helps reduce installation time
• No cutting, refitting, or hose adjustment required
• Thermoplastic quick-connect fittings match OE-style connections
• EPDM hose construction resists heat, salt, road debris, oil, and other contaminants
• Built to SAE J20R4 -D1 standards

Product Details

This Rein engine coolant hose is engineered to match the original hose shape, branch layout, and connector style used on the vehicle. The CHE0175R part number is a direct replacement for BMW OE part 11531740649 and is suited for the expansion tank inlet on compatible BMW cooling systems. For shoppers searching for a BMW Z3 coolant hose, BMW M3 expansion tank inlet hose, or BMW 328i coolant hose replacement, this part provides an OE-style solution with the correct fitment profile.

Rein Automotive focuses on European vehicle cooling components that follow original equipment dimensions and connection points. That makes CHE0175R a practical choice when replacing a worn, cracked, or leaking coolant hose on BMW 323i, 323is, 328i, 328is, M3, and Z3 models.

Common Cooling System Issues

• Coolant seepage at the expansion tank inlet connection
• Cracked or hardened hose material from heat cycling
• Leaks caused by worn quick-connect fittings or aged seals
• Poor sealing after reusing old connectors and O-rings
• Fitment problems from non-OE hose shapes or altered branch geometry

Installation Notes

Install CHE0175R as a direct replacement for the original hose routing and connection points. Because the hose is application-specific, no cutting or refitting should be necessary. Inspect the mating surfaces, quick connectors, and O-rings before installation, and verify the vehicle build date on 1999 BMW Z3 models, which fit vehicles up to September 1998.

Compatible With: 1997-2000 BMW Z3, expansion tank inlet; 1998-1999 BMW 323i, expansion tank inlet; 1998-1999 BMW 323is, expansion tank inlet; 1996-1999 BMW 328i, expansion tank inlet; 1996-1999 BMW 328is, expansion tank inlet; 1996-1999 BMW M3, expansion tank inlet; 1999 BMW Z3, expansion tank inlet (vehicles up to September 1998).

Quality Assurance

Rein CHE0175R is manufactured as an OE-quality replacement coolant hose for European vehicles, with construction and connector design aligned to original equipment requirements. This part cross-references BMW OE part 11531740649 for the same application.