Autotecnica GM0718768 Engine Coolant Reservoir

Engine Coolant Reservoir for GM Applications

This Autotecnica engine coolant reservoir is a direct-fit replacement for select Chevrolet Colorado, GMC Canyon, and Hummer H3 applications. Built from HDPE plastic and supplied with a snap-fit cap, it is designed for non-pressurized cooling systems that need a reliable coolant recovery tank.

Part number GM0718768 is a practical OE-style replacement for drivers and technicians servicing cooling system leaks, cracked tanks, or damaged mounting points on these GM trucks and SUVs.

Key Features

• Engine coolant reservoir for select Chevrolet, GMC, and Hummer vehicles
• Constructed from plastic (HDPE) for cooling system use
• Snap-fit cap included
• Non-pressurized design
• Three mounting holes for vehicle-specific installation
• No level sensor provision
• Dimensions: 17.28 in H x 13.22 in L x 9.2 in W

Product Details

Autotecnica GM0718768 is engineered as an aftermarket replacement for the coolant expansion and recovery function in the engine cooling system. It is compatible with 2004-2008 Chevrolet Colorado, 2004-2006 GMC Canyon, and 2006-2008 Hummer H3, with notes indicating the cap and hose are included for these applications. This part cross-references 15099956 and 15245231 for the same application.

Autotecnica manufactures replacement parts to ISO/TS 16949 QMS specifications, making this reservoir a straightforward option for technicians and DIY repairs where an OE-style fit is required. The GM0718768 part number is also useful when searching for a coolant reservoir for Chevrolet Colorado, GMC Canyon, or Hummer H3 cooling system service.

What It Helps Fix

• Coolant loss from a cracked or leaking reservoir
• Broken or warped plastic tank housing
• Damaged cap sealing surfaces
• Cooling system overflow or recovery issues
• Fitment problems caused by a missing or incorrect reservoir

Installation Notes

Verify the reservoir shape, mounting hole layout, and hose routing against the original part before installation. This reservoir uses a snap-fit cap and does not include mounting hardware or a level sensor. Confirm the cooling system is non-pressurized and inspect the hose and cap condition during replacement to help prevent repeat leaks.

Quality Assurance

Autotecnica backs its aftermarket parts with ISO/TS 16949 QMS manufacturing standards and a two-year, unlimited mileage warranty. GM0718768 is built as a dependable replacement for GM cooling system service on Chevrolet Colorado, GMC Canyon, and Hummer H3 models.