KYB 334228 Suspension Strut - Rear

KYB Excel-G Rear Suspension Strut for GM Cars

KYB Excel-G part number 334228 is a rear suspension strut built to restore original ride control, stability, and steering response. It is a direct OE-style replacement for select Chevrolet Impala, Buick LaCrosse, Buick Allure, Pontiac Grand Prix, and related GM applications.

The Excel-G line is KYB’s OEA replacement series, produced on KYB OE assembly lines with OE-quality components and calibrated damping for factory-style performance. For drivers searching for a rear strut for a 2004-2009 Chevrolet Impala or a rear suspension strut for a 2005-2009 Buick LaCrosse, this KYB Excel-G 334228 is built around the vehicle’s original handling balance.

Key Features

• KYB recommended OEM replacement strut
• Nitrogen gas-charged, twin-tube design
• Triple-lip fluid seal helps reduce 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
• Made in USA
• Rear application with R-stop design
• Upper mount type: 14X1.50
• Compressed length: 15.51 in; extended length: 22.99 in; stroke length: 7.48 in

Product Details

KYB Excel-G 334228 is engineered to restore the designed control of the suspension rather than change it. That makes it a practical choice for GM rear suspension service where factory ride quality, lane-change response, and braking stability matter. It is used on rear applications for 1997-2005 Buick Century, 1997-2004 Buick Regal, 1998-2002 Oldsmobile Intrigue, 2000-2003 Chevrolet Monte Carlo, 2000-2003 Chevrolet Impala, 2004-2007 Chevrolet Monte Carlo, 2004-2008 Pontiac Grand Prix, 2004-2009 Chevrolet Impala, 2005-2009 Buick Allure, and 2005-2009 Buick LaCrosse, with notes varying by wheel size and package.

This part cross-references Monroe Shocks & Struts 71662 for the same application.

What It Helps Address

• Excessive rear bounce or float
• Reduced stability during lane changes and cornering
• Longer stopping distances caused by worn suspension control
• Noisy or inconsistent rear suspension response
• Uneven tire contact from weak damping

Installation Notes and Tips

• Fits 2010-2011 Chevrolet Impala, rear, with taxi package; replace the suspension strut and coil spring assembly according to manufacturer instructions.
• Fits 2004-2009 Chevrolet Impala, rear, for vehicles without 17-inch or 18-inch wheels and excluding police and taxi models.
• Fits 2005-2009 Buick Allure, rear, for vehicles with wheel sizes less than 17 inches.
• Fits 2004-2008 Pontiac Grand Prix, rear, excluding Special Handling Package.
• Fits 2004-2007 Chevrolet Monte Carlo, rear, excluding models with 17-inch or 18-inch wheels.
• KYB recommends new strut mounts, part numbers SM5398 and SM5399, to reduce noise and vibration.
• Use KYB strut boot SB128 to help protect the strut from dirt, debris, and salt.

Quality Assurance

KYB is a major OE supplier to vehicle manufacturers, and the Excel-G line is built on the same KYB OE assembly lines using OE-quality components. The design is calibrated to return the suspension to original performance targets for GM rear applications, including Chevrolet Impala and Buick LaCrosse service work.