KYB 346604 Suspension Shock Absorber - Rear

KYB Excel-G Shock Absorber 346604

KYB Excel-G 346604 is a nitrogen gas-charged, twin-tube suspension shock absorber built to restore original ride control, stability, stopping response, lane-change handling, and steering feel. It is an OE-style replacement made on KYB’s OE assembly lines with OE-quality components for heavy duty trucks and commercial vehicles.

Key Features

• KYB recommended OEM replacement shock for heavy duty trucks and commercial vehicles
• Restores designed control and handling without changing the vehicle’s original suspension character
• Triple-lip fluid seal helps reduce the chance of oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Strong strut body and bracket design helps minimize flex and maintain alignment
• Dust cover included
• Made in USA

Product Details

The Excel-G line is KYB’s Original Equipment for the Aftermarket offering, built for drivers and technicians who want factory-style suspension performance. Part number 346604 uses a twin-tube, nitrogen gas-charged design with a compressed length of 11.16 inches, an extended length of 17.75 inches, and S1(5/8) upper and lower mounts. This KYB shock absorber is engineered to support consistent tire contact and predictable body control in demanding service conditions.

This part cross-references Monroe Shocks & Struts 65173 for the same application. For buyers searching for a KYB 346604 shock absorber, Excel-G replacement shock, or an OE-style suspension shock for heavy duty truck and commercial vehicle service, this part is built around restoring original performance. It is also a relevant replacement choice for GM applications that use this configuration.

What It Helps Address

• Excessive bouncing after bumps or dips
• Loose steering feel and delayed lane-change response
• Reduced body control during braking and cornering
• Uneven tire contact caused by worn damping
• Suspension noise or fluid leakage from an aging shock absorber

Installation Notes

Verify compressed length, extended length, and S1(5/8) upper and lower mount type before installation. Replace shocks in pairs on the same axle when service procedures call for matched damping, and inspect related suspension components, tires, and alignment settings during replacement. For fitment-specific searches, this KYB Excel-G 346604 shock absorber is commonly referenced for GM heavy duty truck and commercial vehicle applications.

Quality Assurance

KYB supplies shocks and struts to new vehicle manufacturers, and the Excel-G line is produced on the same OE assembly lines using OE-quality components. The design focus is restoring original suspension performance and maintaining the vehicle’s intended ride control and handling characteristics.