Gates 19178 HVAC Heater Hose

Gates Molded Heater Hose 19178 Overview

Gates 19178 is a molded heater hose built for tight engine bays where a straight hose will not route correctly. It uses EPDM construction and factory-molded bends to match OE-style coolant hose routing for heater, coolant, water, and air applications.

Compatible With 1999-2009 Chevrolet Trailblazer, GMC Envoy, Saab 9-7x, Buick Rainier, Chevrolet SSR, Chevrolet Trailblazer EXT, GMC Envoy XL, Isuzu Ascender, GMC Envoy XUV, Honda Odyssey, and Dodge Stratus applications listed below.

Key Features

• Brand: Gates Molded Heater Hose
• Part number: 19178
• EPDM hose material for coolant and heater service
• Factory-molded shape for smaller, tighter engine compartments
• 0.63 in. inside diameter at both ends
• Centerline length: 22.6 in. (574 mm)
• Approved for marine applications
• Cross-reference: BBB Industries 11178

Product Details

The Gates Molded Heater Hose line focuses on OE-style routing and fitment for vehicles that need a formed hose rather than a universal straight section. Part number 19178 follows the molded profile needed to connect heater and coolant passages in applications such as the Chevrolet Trailblazer, GMC Envoy, and Honda Odyssey. The EPDM construction supports coolant, water, and air transfer, while the molded design helps maintain proper hose routing in confined spaces.

What This Hose Helps Address

• Cracked or leaking heater hose routing
• Improper fit from a straight replacement hose
• Restricted coolant flow caused by aged hose collapse
• Heat-related hose deterioration in the engine bay
• Service needs on heater-to-pipe, pipe-to-heater, valve-to-intake manifold, tee-to-intake manifold, and pipe-to-engine locations

Installation Notes

Verify the hose path, end diameters, and centerline length before installation. This molded hose is listed for multiple positions, including heater to pipe, pipe to heater, valve to intake manifold, tee to intake manifold, and pipe to engine applications. Match the vehicle, engine routing, and connection points exactly to the fitment data for your specific Chevrolet Trailblazer, GMC Envoy, or Honda Odyssey application.

Quality Assurance

Gates supplies molded coolant and heater hoses in OE-style form for vehicles with compact routing requirements. Part number 19178 is built to the listed dimensions and material specification for direct replacement use in the confirmed applications.