KYB 3450017 Shock Absorber - Rear

KYB Excel-G Rear Shock for GM Vans

The KYB Excel-G 3450017 is a rear suspension shock absorber built to restore original ride control, stability, and handling on select Chevrolet Express and GMC Savana vans. It is a nitrogen gas-charged, twin-tube design made on KYB OE assembly lines with OE-quality components.

Key Features

• KYB recommended OEM replacement shock absorber
• Restores designed control and handling on Chevrolet Express and GMC Savana rear suspension applications
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Supports proper operation of electronic safety systems by helping the suspension perform as engineered
• Strong, thick strut body and bracket construction helps minimize flex and maintain alignment
• Dust cover included

Excel-G Product Line Details

KYB Excel-G is the brand’s Original Equipment for the Aftermarket line. It is calibrated to return the vehicle to its original damping characteristics rather than changing ride feel, making it a practical choice for fleet and work van maintenance where predictable rear suspension response matters. Part number 3450017 is also referenced as Chevrolet 23296353 for the same application.

Detailed Description

Use KYB 3450017 when you need a rear shock absorber for Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, or GMC Savana 3500 applications. This Excel-G shock is engineered to match the vehicle’s original suspension behavior, helping maintain load stability, braking consistency, and lane-change responsiveness on GM vans. The compressed length is 14.33 inches, extended length is 24.01 inches, and stroke length is 9.68 inches.

What It Helps Address

• Excessive rear bounce or oscillation
• Reduced stability during braking or lane changes
• Uneven tire contact caused by worn damping
• Rear-end body movement under load
• Leakage or loss of shock performance from aging components

Installation Notes and Tips

Compatible With rear suspension applications on 2016-2025 Chevrolet Express 2500 and Express 3500, plus 2016-2025 GMC Savana 2500 and Savana 3500, depending on model year. For 2016-2020 Chevrolet Express 2500 and Express 3500, and 2016-2020 GMC Savana 2500 and Savana 3500, replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify lower mount type E2(14.6X42) and upper mount type E3(61.6X87X0) before installation.

Quality Assurance

KYB supplies shocks and struts to new vehicle manufacturers and builds Excel-G on the same OE assembly lines using OE-quality components. The design is calibrated to restore original performance for the listed GM van applications.