Stabilus 5Z-438374 Tailgate Lift Support

Tailgate Lift Support for Silverado and Sierra

This Stabilus tailgate lift support is built for EZ-Down applications on select Chevrolet Silverado and GMC Sierra trucks. It is a direct-fit body component for tailgate control on classic and earlier GMT800-era models, including the 1999-2006 Silverado 1500 and 1999-2006 Sierra 1500.

Part number 5Z-438374 is also referenced as 438374 for the same application.

Key Features

• Brand: Stabilus
• Part number: 5Z-438374
• Tailgate lift support for body/tailgate service
• EZ-Down full kit application with hardware noted in fitment data
• Compressed length: 169 mm (6.65 in)
• Extended length: 244 mm (9.61 in)
• Rod diameter: 8 mm (0.315 in)
• Tube diameter: 19 mm (0.748 in)
• Rod and tube connection type: metal blade

Detailed Description

Stabilus 5Z-438374 is a tailgate lift support for Chevrolet Silverado and GMC Sierra trucks equipped with EZ-Down tailgate hardware. The compact gas support measures 169 mm compressed and 244 mm extended, with an 8 mm rod and 19 mm tube for the specified tailgate linkage geometry. This part is listed for a wide range of Silverado and Sierra applications, including 1999-2006 Chevrolet Silverado 1500, 2001-2006 Silverado 2500 HD, 1999-2006 GMC Sierra 1500, and 2001-2006 GMC Sierra 2500 HD, plus 2007 Classic models such as the Silverado 1500 Classic and Sierra 1500 Classic.

Use 5Z-438374 when servicing a tailgate that no longer lowers smoothly or stays controlled during opening. It is a direct replacement style component for the listed Chevrolet Silverado and GMC Sierra fitments, including 2007 Classic trucks with EZ-Down full kit hardware.

What It Helps Fix

• Tailgate drops too quickly when opened
• Weak or worn tailgate support action
• Uneven or inconsistent tailgate lowering
• Binding or poor movement at the tailgate linkage
• Loss of controlled EZ-Down operation on listed Silverado and Sierra trucks

Installation Notes and Tips

Verify the vehicle’s EZ-Down tailgate setup before ordering. Confirm the compressed and extended lengths, rod diameter, tube diameter, and metal blade connection style match the original support. Fitment includes 2007 Chevrolet Silverado 1500 Classic, 2007 Chevrolet Silverado 1500 HD Classic, 2007 Chevrolet Silverado 2500 HD Classic, 2007 Chevrolet Silverado 3500 Classic, 2007 GMC Sierra 1500 Classic, 2007 GMC Sierra 1500 HD Classic, 2007 GMC Sierra 2500 HD Classic, and 2007 GMC Sierra 3500 Classic. Also listed are 1999-2006 Chevrolet Silverado 1500, 2005-2006 Chevrolet Silverado 1500 HD, 2001-2006 Chevrolet Silverado 2500 HD, 1999-2006 GMC Sierra 1500, 2005-2006 GMC Sierra 1500 HD, 2001-2006 GMC Sierra 2500 HD, 1999-2004 Chevrolet Silverado 2500, and 1999-2004 GMC Sierra 2500.

Quality Assurance

Stabilus is a recognized OE supplier in gas spring and lift support applications, and this part is built to match the listed tailgate fitment requirements for Chevrolet Silverado and GMC Sierra trucks.