KYB KG5040 Shock Absorber - Front

KYB Gas-a-just Front Shock Absorber

The KYB Gas-a-just KG5040 is a monotube suspension shock absorber built as an OE-style replacement for vehicles that need consistent front-end control. It is designed for full-size GM trucks and vans, including Chevrolet Express 1500, GMC Savana 1500, Chevrolet Tahoe, and GMC Yukon applications with the listed suspension packages.

Gas-a-just Product Line

KYB Gas-a-just shocks use a monotube design with separate hydraulic and high-pressure nitrogen gas chambers. That layout supports responsive damping during normal driving while adding firmer control when the suspension is working harder, such as on towing, hauling, or vehicles with larger tires and wheels.

Key Features

• Monotube OE replacement for restored steering and handling response
• High-pressure gas and oil separation for fade-resistant operation
• Triple chrome plated piston rod to help reduce seal wear
• Built for trucks and vans that work, tow, or carry heavier wheel and tire setups
• Supports suspension performance used by electronic safety systems
• Dust cover included

Detailed Description

KYB KG5040 is engineered for front suspension use on select Chevrolet and GMC platforms from 2000-2014. It fits 2003-2014 Chevrolet Express 1500, front; 2003-2014 GMC Savana 1500, front; 2002-2006 Chevrolet Avalanche 1500, front; 2000-2006 Chevrolet Suburban 1500, front; 2001-2006 Chevrolet Tahoe, front; 2001-2006 GMC Yukon, front; 2000-2006 GMC Yukon XL 1500, front; 2003 Chevrolet Express 2500, front; 2003 GMC Savana 2500, front; 2000 Chevrolet Tahoe, front; and 2000 GMC Yukon, front. This part cross-references Monroe Shocks & Struts 911505 for the same application.

With a compressed length of 10.78 in., extended length of 15.11 in., and stroke length of 4.33 in., the KG5040 is sized for the listed front suspension applications. The monotube construction helps maintain consistent damping response, while the higher gas pressure improves steering feel and control on GM trucks such as the Chevrolet Tahoe and GMC Yukon.

What It Helps Address

• Excessive front-end bounce or float
• Reduced steering response on worn suspension systems
• Shock fade during repeated load changes or towing
• Oil leakage from a worn shock absorber
• Loss of ride control on vehicles with heavier tires and wheels

Installation Notes

Install according to the vehicle manufacturer’s instructions. Some applications require replacement of the suspension strut and coil spring assembly during service. Verify upper mount type S1 and lower mount type SPECIAL before installation, and confirm the vehicle uses the listed front suspension package. The KG5040 includes a dust cover and does not use an internal rebound spring or B-stop.

Quality Assurance

KYB designs Gas-a-just shocks as OE monotube replacements to help restore original suspension behavior on the specified Chevrolet and GMC applications. The KG5040 is built to support the control, ride quality, and steering response expected from the factory suspension design.