Gates 18340 HVAC Heater Hose - Reservoir To Engine

Gates 18340 Molded Heater Hose Overview

The Gates 18340 molded heater hose is a factory-molded, OEM-style coolant hose built for tight engine compartments. It is made from EPDM and measures 32.8 in. (833 mm) centerline length with 8 mm inside diameter ends for a precise reservoir-to-engine routing path.

Compatible with select Buick Regal, Buick LaCrosse, Chevrolet Impala, and Chevrolet Malibu applications, this molded heater hose supports coolant, water, and air transfer. It is also approved for marine applications.

Key Features

• Brand: Gates Molded Heater Hose
• Part number: 18340
• EPDM construction for coolant hose service
• Factory-molded shape for compact engine bay routing
• End 1 inside diameter: 8 mm (.31 in.)
• End 2 inside diameter: 8 mm (.31 in.)
• Centerline length: 32.8 in. (833 mm)
• Molded design with no quick connect fittings
• Approved for coolant, water, air, and marine applications

Product Details

The Gates Molded Heater Hose line focuses on OE-style routing and fitment for vehicles with smaller, tighter-fitting engine compartments. Part number 18340 follows that product line approach with a molded EPDM construction and a reservoir-to-engine layout that matches the listed applications. This hose cross-references Davico Mfg 18340 for the same application.

Fits 2011-2017 Buick Regal, Reservoir To Engine. Fits 2010-2016 Buick LaCrosse, Reservoir To Engine. Fits 2014 Chevrolet Impala, Reservoir To Engine. Fits 2013-2014 Chevrolet Malibu, Reservoir To Engine.

Common Replacement Reasons

• Cracked or hardened heater hose material
• Coolant seepage at a molded hose section
• Incorrect hose routing in a tight engine compartment
• Loss of proper reservoir-to-engine coolant flow
• Need for an OE-style molded replacement hose

Installation Notes

Verify the hose routing, end diameters, and centerline length before installation. Because this is a molded hose, correct orientation matters for reservoir-to-engine routing on Buick Regal, Buick LaCrosse, Chevrolet Impala, and Chevrolet Malibu applications. Inspect adjoining fittings and clamps for wear before installing the new hose.

Quality Assurance

Gates manufactures this molded heater hose as an OE-style replacement part for coolant system service. The EPDM construction and factory-molded shape support consistent fitment in the listed applications.