KYB 344338 Shock Absorber - Rear

KYB Excel-G Rear Shock Absorber

The KYB Excel-G 344338 is a rear suspension shock absorber built to restore original ride control, stability, and handling. It is a nitrogen gas-charged, twin-tube design made on KYB OE assembly lines with OE-quality components for GM SUV and crossover applications.

For drivers servicing a Pontiac Montana, Chevrolet Uplander, Buick Terraza, Saturn Relay, Pontiac Aztek, Oldsmobile Silhouette, or Pontiac Trans Sport, this rear shock is calibrated to return the vehicle to its designed damping performance without changing the factory ride character.

Key Features

• KYB recommended OEM replacement shock for SUVs and crossovers
• Restores designed control and handling for GM SUV 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 suspension, brakes, and tires work as engineered
• Strong strut body and bracket construction helps minimize flex and maintain alignment
• Dust cover included
• Lower mount type: E2(12X38); upper mount type: E2(12X38)

Product Details

KYB Excel-G is KYB’s OEA-style replacement line, meaning it is built to restore original equipment performance rather than alter it. Part number 344338 uses a twin-tube, gas-charged design with a compressed length of 12.6 inches, extended length of 20.08 inches, and stroke length of 7.48 inches. This rear shock absorber is a direct-fit service part for 1997-2009 GM minivans and crossovers listed below, including Fits 1999-2009 Pontiac Montana, rear, and Fits 2005-2008 Chevrolet Uplander, rear.

This part cross-references Monroe Shocks & Struts (e.g., 37156) for the same application.

What It Helps Address

• Excessive rear bounce after bumps
• Loose or unsettled rear-end handling
• Reduced tire contact over uneven pavement
• Delayed steering response during lane changes
• Wear from leaking or fatigued rear shock absorbers

Installation Notes

• Verify rear suspension configuration before ordering; this part is for vehicles without self-leveling or rear level control where noted.
• Confirm mount style and dimensions against the original shock absorber before installation.
• Inspect related suspension components, including bushings and mounts, during replacement.
• After installation, check ride height, alignment condition, and road-test for proper damping response.

Quality Assurance

KYB manufactures Excel-G on the same OE assembly lines used for original equipment production and calibrates it to restore factory-designed performance. Part number 344338 is built with OE-quality components and is a preferred replacement choice among professional technicians.

• Fits 1999-2009 Pontiac Montana, rear
• Fits 2005-2008 Chevrolet Uplander, rear
• Fits 2005-2007 Buick Terraza, rear
• Fits 2005-2007 Saturn Relay, rear
• Fits 2001-2005 Pontiac Aztek, rear
• Fits 1997-2004 Oldsmobile Silhouette, rear
• Fits 1997-1998 Pontiac Trans Sport, rear