Gates 51511 HVAC Heater Hose - Heater Outlet or Heater To Thermostat

Gates 51511 Molded Heater Hose for Cadillac ATS

The Gates 51511 molded coolant hose is built for specific HVAC heater hose applications on the Cadillac ATS. It follows OE-style routing and integrates the branch and quick-connect connection needed for the listed heater outlet and heater-to-thermostat positions.

Key Features

• Gates Molded Coolant Hose line for application-specific fitment
• OE-style molded construction for the Cadillac ATS cooling and HVAC hose routing
• Material blend of EPDM, plastic, and steel for the specified hose assembly
• Includes one female quick connector and a branch configuration
• Designed for heater outlet and heater-to-thermostat locations
• Part number 51511 for direct catalog matching and cross-reference lookup

Product Details

Gates 51511 is a molded HVAC heater hose assembly engineered for the Cadillac ATS platform. Gates builds this modular coolant hose line to match specific applications and to mirror OE-style layouts, including integrated components such as branches and quick-connect fittings where required. This hose is listed for 2013-2017 Cadillac ATS heater-to-thermostat applications and 2016-2019 Cadillac ATS heater outlet applications, including the noted start-stop and electric-start configurations.

The hose uses EPDM, plastic, and steel construction and is molded to the specified shape for proper routing in the engine bay. If you are replacing a worn or leaking Cadillac ATS heater hose, Gates 51511 provides the correct style of molded replacement for the original HVAC coolant path. This part cross-references 27438X and 22908203 for the same application.

Common Problems This Part Can Address

• Coolant seepage at the heater hose assembly
• Cracked or hardened molded hose sections
• Damaged quick-connect connection at the heater circuit
• Incorrect hose routing after prior repair work
• Loss of heater performance caused by coolant flow restriction

Installation Notes and Tips

Verify the vehicle’s year, engine configuration, and heater hose routing before installation. This Gates 51511 hose is listed for Cadillac ATS heater outlet and heater-to-thermostat positions, so match the original hose path and connector style before removal. Inspect adjoining fittings, clamps, and sealing surfaces for wear, and confirm the quick connector seats fully during installation.

Quality Assurance

Gates is a recognized aftermarket supplier of modular coolant hose assemblies, and this part is manufactured to application-specific OE-style requirements for the listed Cadillac ATS fitments. Part number 51511 is cataloged for direct replacement matching within the stated applications.