KYB 339148 Suspension Strut - Rear

KYB Excel-G Rear Strut for Impala and Monte Carlo

The KYB Excel-G 339148 is a rear suspension strut built to restore original ride control, stability, and steering response on select Chevrolet applications. It is a direct OE-style replacement for drivers who want factory-correct handling on a Chevrolet Impala, Impala Limited, or Monte Carlo.

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
• R-stop design included in the original engineering

Product Line Details

Excel-G is KYB’s OE replacement line focused on restoring the vehicle’s original suspension behavior rather than changing it. KYB builds this line on the same OE assembly lines used for new vehicle supply, using OE-quality components and calibration intended to return designed performance on Chevrolet Impala and Monte Carlo rear suspension applications. The KYB Excel-G 339148 is classified as an OEA-style aftermarket replacement.

Fitment

• Fits 2014-2016 Chevrolet Impala Limited, rear. Replace suspension strut and coil spring assembly according to manufacturer's instructions; Excel-G.
• Fits 2010-2013 Chevrolet Impala, rear. Recommended OEM Replacement; Except Police Car and Taxi; Excel-G.
• Fits 2004-2009 Chevrolet Impala, rear. Recommended OEM Replacement; w/ 17 inch or 18 inch Wheels; Excel-G.
• Fits 2004-2007 Chevrolet Monte Carlo, rear. Recommended OEM Replacement; w/ 17 inch or 18 inch Wheels; Excel-G.

What It Helps Address

• Excessive rear bounce or float
• Reduced stability during lane changes and braking
• Loose or delayed steering response
• Uneven tire contact caused by worn damping control
• Suspension noise or handling changes from a worn rear strut

Installation Notes and Tips

Fits the rear position only. Confirm wheel size and application notes before ordering, especially for 2004-2009 Chevrolet Impala and 2004-2007 Chevrolet Monte Carlo models with 17-inch or 18-inch wheels. For 2014-2016 Chevrolet Impala Limited, replace the suspension strut and coil spring assembly according to manufacturer instructions. This part cross-references Monroe Shocks & Struts (e.g., 71671) for the same application.

Quality Assurance

KYB is a major OE supplier of shocks and struts, and the Excel-G line is built to OE-quality standards on KYB assembly lines. The 339148 uses a twin-tube, gas-charged design with components calibrated to restore original suspension performance on the listed Chevrolet rear applications.