Dorman 800-403HP HVAC Heater Hose Connector - Heater To Engine

Dorman 800-403HP Heater Hose Connector

The Dorman 800-403HP HVAC heater hose connector replaces brittle plastic factory fittings with a more rugged aluminum design. It is built for a precise fit on select Ford, GM, and Saab vehicles, including applications such as Chevrolet Trailblazer, GMC Envoy, and Saab 9-7x.

Key Features

• Aluminum construction for improved durability versus plastic OE connectors
• Silver finish with a cylinder-shaped body
• Hose barb and quick disconnect ends for the specified HVAC hose connection
• 5/8 in. end size with 0.45 in. hose inside diameter and 1.04 in. tube outside diameter
• Direct replacement style for select Ford, GM, and Saab heater hose routing
• Dorman OE FIX design engineered to match factory performance while extending service life

Detailed Description

This HVAC heater hose connector is designed for vehicles where the original plastic connector can crack, leak, or separate from the heater hose after repeated heat and abrasion exposure. The Dorman 800-403HP uses aluminum instead of plastic to provide a sturdier repair for the heater hose connection while maintaining the OE-style fit needed for service on select applications. It is a practical replacement for owners searching for a heater hose connector for Chevrolet Trailblazer, GMC Envoy, Saab 9-7x, and other listed GM and Ford platforms.

This part cross-references GM 15119175 and Ford E69Z18D435A for the same application.

What It Helps Fix

• Coolant leaks at the heater hose connector
• Cracked or brittle plastic HVAC hose fittings
• Loose heater hose attachment at the quick disconnect end
• Breakage caused by heat cycling and abrasion
• Loss of heater performance from a leaking hose connection

Installation Notes and Tips

Verify the hose end sizes and quick disconnect style before installation. This connector is listed for specific heater-to-engine and HVAC hose applications, so confirm vehicle year, make, model, and hose routing against the fitment data before service. For best results, inspect the surrounding heater hose and adjacent fittings for wear, contamination, or damage before reassembly.

Quality Assurance

Dorman OE FIX parts are engineered to meet the performance of the original design while using a more durable material strategy for longer service life. The 800-403HP is manufactured to precise standards for a seamless fit on the specified applications.

Vehicle Fitment

• Fits 2002-2009 Chevrolet Trailblazer, N/A
• Fits 2002-2009 GMC Envoy, N/A
• Fits 2005-2009 Saab 9-7x, N/A
• Fits 2004-2007 Buick Rainier, N/A
• Fits 2004-2007 Chevrolet Colorado, N/A
• Fits 2004-2007 GMC Canyon, N/A
• Fits 2005-2006 Cadillac Escalade, Heater To Engine
• Fits 2005-2006 Cadillac Escalade ESV, Heater To Engine
• Fits 2005-2006 Cadillac Escalade EXT, Heater To Engine
• Fits 2000-2006 Chevrolet Suburban 1500, N/A
• Fits 2000-2006 Chevrolet Suburban 2500, N/A
• Fits 2000-2006 Chevrolet Tahoe, N/A
• Fits 2002-2006 Chevrolet Trailblazer EXT, N/A
• Fits 2002-2006 GMC Envoy XL, N/A
• Fits 2000-2006 GMC Yukon, N/A
• Fits 2000-2006 GMC Yukon XL 1500, N/A
• Fits 2000-2006 GMC Yukon XL 2500, N/A
• Fits 2002-2005 Buick Rendezvous, N/A
• Fits 2004-2005 GMC Envoy XUV, N/A
• Fits 2001-2005 Pontiac Aztek, N/A
• Fits 1999-2005 Pontiac Grand Am, N/A
• Fits 1999-2005 Pontiac Montana, N/A
• Fits 2002-2004 Cadillac Escalade, N/A
• Fits 2003-2004 Cadillac Escalade ESV, N/A
• Fits 2002-2004 Cadillac Escalade EXT, N/A
• Fits 2002-2004 GMC Sonoma, N/A
• Fits 1999-2004 Oldsmobile Alero, N/A
• Fits 2002-2004 Oldsmobile Bravada, N/A
• Fits 1997-2004 Oldsmobile Silhouette, N/A
• Fits 1997-2003 Chevrolet Malibu, N/A
• Fits 2002-2003 Chevrolet Silverado 3500, N/A
• Fits 2002-2003 GMC Sierra 3500, N/A
• Fits 1997-2000 Ford F-150, N/A
• Fits 1986-1989 Ford F-150, N/A
• Fits 1999-2000 Ford F-250, N/A
• Fits 1997 Ford F-250, N/A
• Fits 1986-1989 Ford F-250, N/A
• Fits 1997-1999 Oldsmobile Cutlass, N/A
• Fits 1997-1998 Oldsmobile Achieva, N/A
• Fits 1997-1998 Pontiac Trans Sport, N/A
• Fits 1986-1994 Ford Aerostar, N/A
• Fits 1986-1989 Ford Bronco, N/A
• Fits 1986-1989 Ford Bronco II, N/A
• Fits 1986-1989 Ford E-150 Econoline, N/A
• Fits 1986-1989 Ford E-150 Econoline Club Wagon, N/A
• Fits 1986-1989 Ford E-250 Econoline, N/A
• Fits 1986-1989 Ford E-250 Econoline Club Wagon, N/A
• Fits 1986-1989 Ford E-350 Econoline, N/A
• Fits 1986-1989 Ford E-350 Econoline Club Wagon, N/A
• Fits 1986-1989 Ford F-350, N/A
• Fits 1986-1989 Ford Ranger, N/A