KYB 554348 Shock Absorber - Rear

Overview of KYB Gas-a-just Suspension Shock Absorber 554348

The KYB Gas-a-just Suspension Shock Absorber 554348 is engineered to provide reliable damping performance for Chevrolet Express 2500, Express 3500, GMC Savana 2500, and Savana 3500 models. Designed to restore vehicle stability and control, this shock absorber is built with precise dimensions and mounting specifications to ensure proper fit and function.

• Compressed Length: 14.84 inches
• Extended Length: 23.62 inches
• Stroke Length: 8.78 inches
• Lower Mount Type: E2 (14.6x42)
• Upper Mount Type: E3 (61.6x87x0)
• Includes Dust Cover for protection
• No internal rebound spring
• No B-stop or R-stop features

Details on the KYB Gas-a-just Product Line

The Gas-a-just line from KYB focuses on gas-charged shock absorbers designed to improve vehicle handling and ride comfort. This product line uses pressurized nitrogen gas to reduce aeration and foaming inside the shock, which helps maintain consistent damping performance. The 554348 shock absorber is part of this line, offering a balance of durability and control tailored for full-size vans like the Chevrolet Express and GMC Savana series.

Technical Description and Fitment

This KYB shock absorber features a compressed length of 14.84 inches and an extended length of 23.62 inches, providing an 8.78-inch stroke length suitable for the suspension travel of the specified vehicles. The lower mount uses an E2 type with dimensions 14.6 by 42 mm, while the upper mount is an E3 type measuring 61.6 by 87 mm. The inclusion of a dust cover helps protect the piston rod from debris and extends the service life of the shock. This part is compatible with Chevrolet Express 2500 and 3500, as well as GMC Savana 2500 and 3500 models, ensuring a direct replacement without modification.

Common Applications and Problem Solving

• Restores proper damping to reduce excessive bouncing and improve ride quality
• Addresses vehicle instability during cornering or braking
• Eliminates noise and vibration caused by worn or damaged shocks
• Prevents premature tire wear due to poor suspension control
• Improves load handling capability for full-size vans

Installation Notes and Tips

When installing the KYB Gas-a-just 554348 shock absorber, ensure the vehicle is securely lifted and supported. Verify the orientation of the upper and lower mounts to match the E3 and E2 specifications respectively. It is recommended to replace shocks in pairs to maintain balanced suspension performance. Inspect mounting hardware and bushings for wear and replace if necessary. After installation, perform a test drive to confirm improved handling and ride comfort.

Quality Assurance and Warranty

KYB manufactures the Gas-a-just shock absorbers to meet or exceed OEM specifications, ensuring consistent performance and durability. This part number 554348 undergoes rigorous quality control testing. While specific warranty details may vary, KYB typically offers a limited warranty covering defects in materials and workmanship. Refer to KYB documentation for exact warranty terms applicable to this suspension shock absorber.