KYB 3440029 Suspension Shock Absorber - Rear

KYB Excel-G Shock Absorber for Ford Heavy Duty Use

The KYB Excel-G 3440029 is a nitrogen gas-charged, twin-tube suspension shock absorber built to restore original ride control, stability, stopping response, and handling. It is an OE-style replacement for heavy-duty trucks and commercial vehicles, including Ford F-450 applications.

Key Features

• KYB Excel-G OEA replacement shock for heavy-duty truck and commercial use
• Restores designed control and handling for Ford F-450 suspension systems
• 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 maintaining suspension behavior as engineered
• Strong, thick strut body and bracket design helps minimize flex and maintain alignment
• Dust cover included

Product Details

KYB Excel-G shocks and struts are assembled on KYB OE production lines using OE-quality components and calibrated to return the vehicle to its original damping characteristics rather than changing ride feel. Part number 3440029 uses a twin-tube design with compressed length of 14.68 inches, extended length of 24.8 inches, and stroke length of 10.12 inches. Mounting details are E2(12X38) lower and E1 upper.

This part cross-references Ford service numbers 5C3Z18125DA and BC3Z18125AP for the same application. It is a direct-fit suspension shock absorber for Ford heavy-duty truck service where original ride control and steering response matter.

What It Helps Address

• Excessive bounce after bumps or dips
• Loose or unstable steering feel
• Reduced body control during lane changes
• Uneven tire contact caused by worn damping
• Suspension performance loss that can affect braking and stability systems

Installation Notes

Verify mounting style, compressed length, extended length, and stroke before installation. Inspect related suspension components, bushings, and mounting points for wear before replacing the shock absorber. For best results, replace worn shocks in matched pairs on the same axle when service procedures call for it. Confirm the vehicle application against Ford F-450 fitment and the listed interchange numbers before ordering.

Quality Assurance

KYB is a major OE supplier of shocks and struts, and the Excel-G line is built on the same manufacturing lines used for original equipment production. The 3440029 is engineered to restore factory-style ride control and handling for Ford F-450 and other listed Ford heavy-duty applications.