Gates 19613 HVAC Heater Hose - Heater To Engine or Heater To Intake Manifold

Gates 19613 Molded Heater Hose Overview

The Gates 19613 molded heater hose is a factory-shaped coolant hose built for tight engine bays where a straight hose will not route correctly. Made from EPDM and formed to OEM-style dimensions, it supports coolant, water, and air transfer and is also approved for marine applications.

This molded heater hose is a direct-fit style replacement for select Chevrolet Cavalier, Chevrolet Corsica, Pontiac Tempest, and Buick Skyhawk applications. Gates Molded Heater Hose products are shaped for accurate routing in compact engine compartments, helping maintain proper hose alignment in heater and intake manifold connections.

Key Features

• Gates part number 19613
• Factory-molded, OEM-style hose shape
• EPDM construction for coolant system use
• 3/4 in. inside diameter at both ends
• 23.1 in. centerline length
• Designed for heater, coolant, water, and air applications
• Approved for marine applications

Detailed Product Description

Gates 19613 is a molded heater hose engineered for vehicles with smaller, tighter-fitting engine compartments. Its pre-formed shape helps match the original hose routing, reducing the need to force a straight hose into a curved path. The EPDM material is commonly used in cooling-system service for its resistance to heat and coolant exposure. This hose measures 19 mm, or 3/4 inch, at both ends and has a 587 mm centerline length, making it a precise option for the listed HVAC hose applications. If you are replacing a worn heater hose on a 1989-1991 Chevrolet Cavalier, 1990-1991 Chevrolet Corsica, 1990-1991 Pontiac Tempest, or 1989 Buick Skyhawk, Gates 19613 provides the correct molded routing for the specified heater-to-intake-manifold or heater-to-engine positions. This part cross-references Dayco 88360 for the same application.

Common Problems This Hose Can Address

• Cracked or hardened heater hose material
• Incorrect routing in a compact engine compartment
• Coolant seepage at a worn hose section
• Restricted fitment from using a non-molded replacement hose
• Service replacement for heater circuit hose damage

Installation Notes and Tips

Verify the hose routing, end diameters, and centerline length before installation. Compare the original hose shape to the molded profile of Gates 19613 to confirm the heater-to-intake-manifold or heater-to-engine path matches your vehicle. Inspect adjoining clamps, fittings, and connection points for wear or corrosion before installing the new hose.

Quality Assurance

Gates manufactures molded coolant and heater hoses to OE-style specifications for accurate fit and routing. The 19613 is built as a molded replacement hose for service applications where correct shape and material selection matter.