Rein CHH0109 HVAC Heater Hose - Heater Inlet To Heater Valve Outlet

OE Heater Hose for BMW Cooling System Service

Rein CHH0109 is an OE-quality heater hose for European vehicle cooling systems, built as a direct replacement for the original hose assembly. It is made for BMW 323i, 325i, 328i, 330i, and related models with the heater inlet to heater valve outlet routing.

• EPDM construction for heat and coolant resistance
• Black finish
• Length: 509.52 mm
• End 1 inside diameter: 17.27 mm; outside diameter: 29.97 mm
• End 2 inside diameter: 19.05 mm; outside diameter: 25.91 mm
• Working pressure: 50.00
• Direct replacement for OE hose and hose assembly fitment
• Thermoplastic quick-connect fittings match the original configuration

Detailed Fitment and Application

Rein CHH0109 is engineered for BMW heater circuit service where the hose runs from the heater inlet to the heater valve outlet. It is a direct-fit replacement for the original BMW hose assembly and is listed for 2000-2006 BMW 323Ci, 323i, 328Ci, 328i, 325Ci, 330Ci, 320i, 325i, 325xi, 330i, and 330xi applications. This part cross-references Genuine 64218363198 for the same application.

Common Problems This Part Can Address

• Cracked or hardened heater hose material
• Coolant seepage at the hose connection points
• Restricted heater flow from a deteriorated hose assembly
• Broken or worn quick-connect fittings
• Incorrect hose shape or length after prior repairs

Installation Notes and Tips

Verify the hose routing, connector style, and end diameters before installation. Drain coolant as needed, inspect adjacent heater valve and pipe connections for wear, and replace any damaged clamps or seals during service if required by the vehicle setup. Confirm the heater inlet to heater valve outlet routing on the vehicle before final assembly.

Quality Assurance

Rein Automotive heater hoses are built to OE-quality standards for European vehicles and are shaped to match the original hose assembly layout, including branch geometry and quick-connect fitment. Part number CHH0109 is designed as a direct replacement for the factory-style BMW heater hose assembly.