Gates 51443 HVAC Heater Hose - Reservoir (Lower)

Gates 51443 Molded Coolant Hose

The Gates 51443 molded coolant hose is built for specific HVAC heater hose applications and follows OE-style routing and connection points. It is a direct-fit option for Ford Super Duty trucks that need a lower reservoir hose with molded shape and integrated connector details.

Key Features

• Brand: Gates Molded Coolant Hose line
• Part number: 51443
• Material: EPDM and plastic
• Centerline length: 19.5 in. (495 mm)
• End 1 inside diameter: 0.96 in. (24 mm)
• End 2 inside diameter: 1.25 in. (32 mm)
• Female quick connector at the specified connection point
• OE-style molded construction for application-specific routing

Product Details

Gates Molded Coolant Hose 51443 is engineered for the lower reservoir position on select Ford F-250 Super Duty and Ford F-350 Super Duty models. The molded EPDM and plastic construction helps match the original hose path and connection layout, including integrated OE-style components called out for the application. This part cross-references Ford service numbers BC3Z 8C633 A and BC3Z 8C633 B for the same application.

The Gates molded coolant hose product line focuses on application-specific coolant hose assemblies that mirror OEM specifications. For Ford F-250 Super Duty and Ford F-350 Super Duty cooling system service, this hose supports a clean replacement where the original routing, connector style, and molded shape matter.

Vehicle Fitment

• Fits 2011-2019 Ford F-250 Super Duty, Reservoir (Lower)
• Fits 2011-2019 Ford F-350 Super Duty, Reservoir (Lower)

Common Repair Uses

• Lower reservoir hose replacement on Ford Super Duty cooling systems
• Repairing cracked, swollen, or leaking molded coolant hose sections
• Restoring proper hose routing after connector or plastic section wear
• Addressing coolant loss at the reservoir connection point
• Replacing a hose with damaged OE-style quick-connect interface

Installation Notes

Verify the hose routing, end diameters, and connector style against the original part before installation. Confirm the lower reservoir position on the vehicle and inspect mating surfaces, clips, and adjacent coolant components for wear or contamination. Proper seating of the female quick connector is important for a secure connection.

Quality Assurance

Gates is a recognized aftermarket supplier of modular coolant hose assemblies, and this part is manufactured to application-specific specifications with OE-style integrated features for the listed Ford Super Duty fitments.