Gates 51958 HVAC Heater Hose - Pipe To Thermostat

BMW Heater Hose Replacement

Gates 51958 is a molded coolant hose for the HVAC heater circuit, built for specific BMW applications that route from the pipe to the thermostat. It uses EPDM and plastic construction and follows OE-style routing with integrated connector features for a direct-fit service replacement.

Key Features

• Gates Molded Coolant Hose line for application-specific fitment
• EPDM and plastic construction for coolant system use
• Female quick connector end for OE-style connection points
• 19.2 in. centerline length for the listed BMW routing
• 15 mm inside diameter at both ends
• Cross-reference part numbers include 17127648644 and F11347

Product Details

This Gates 51958 heater hose is manufactured to match the shape and connection style used on the original coolant hose assembly. Gates builds its molded coolant hose line for specific applications and incorporates essential OE-style components where required, such as quick-connectors and other integrated features. For BMW cooling system service, that means a hose that follows the factory path from the pipe to the thermostat without requiring universal adaptation.

Compatible With BMW M235i and BMW M235i xDrive, pipe to thermostat; BMW 335i, BMW 335i GT xDrive, and BMW 335i xDrive, pipe to thermostat; and BMW 435i, 435i Gran Coupe, 435i xDrive, and 435i xDrive Gran Coupe, pipe to thermostat. The Gates 51958 part number is also a useful reference when matching the correct molded coolant hose for these BMW models.

Common Problems This Hose Can Address

• Cracked or brittle heater hose material
• Coolant seepage at the hose connection points
• Improper routing from a previous repair
• Damaged quick-connector interface at the thermostat pipe
• Loss of factory-style fit in the coolant/heater circuit

Installation Notes

Verify the vehicle’s engine and hose routing before installation. Compare the original hose shape, end style, and centerline length to the replacement part to confirm the correct application. Inspect mating pipes, seals, and connector surfaces for wear or contamination before connecting the new hose. This part cross-references BMW OE number 17127648644 for the same application.

Quality Assurance

Gates is a recognized aftermarket supplier of modular coolant hose assemblies, and this molded hose is produced to follow OE-style application requirements for the listed BMW vehicles. Part number 51958 is built for direct replacement use in the specified heater hose position.