Settle rear-corner ride quality and steering pivot support with the KYB Strut-Plus Suspension Strut and Coil Spring Assembly SR4004, a complete corner unit that combines the strut, upper mount, and spring in one pre-assembled package. It installs as a direct-fit replacement in the rear-left position on the 1997-2005 Buick Century, 1997-2004 Buick Regal, 2001-2003 Chevrolet Impala, 2000-2003 Chevrolet Monte Carlo, and 1997-2008 Pontiac Grand Prix — see the Buyer's Guide tab for engine-level applications.
- Complete corner unit: pairs a KYB Excel-G strut with a stronger steel outer shell and KYB's application-specific, precision-designed damping valves.
- High-carbon steel coil spring: application-engineered to match the strut and help hold ride height within OE specifications.
- Side-specific design: left and right part numbers with side-specific components, as the vehicle manufacturer intended.
- Safety-system aware: engineered to help vehicles equipped with electronic safety systems such as ESC and ABS. Assembled in USA.
A strut assembly supports vehicle weight, sets ride height, and acts as the steering pivot. This unit is pre-assembled for a straightforward install; replacing struts as a matched pair across the axle is recommended for balanced handling.
Interchange: G56924 · 171662L
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this assembly include?
It's a complete corner unit that combines the KYB Excel-G strut, upper mount, and an application-engineered high-carbon steel coil spring, pre-assembled in one package.
Which position does the SR4004 fit?
It is cataloged for the rear-left position. Confirm the application for your vehicle in the Buyer's Guide tab before ordering.
What vehicles does it fit?
1997-2005 Buick Century, 1997-2004 Buick Regal, 2001-2003 Chevrolet Impala, 2000-2003 Chevrolet Monte Carlo, and 1997-2008 Pontiac Grand Prix. See the Buyer's Guide tab.
Should I replace both sides at once?
Replacing struts as a matched pair across the axle is recommended for balanced ride and handling, though this listing covers one rear-left corner unit.
What numbers does this part interchange with?
It cross-references G56924 and 171662L. Match your original part number to confirm the correct replacement.
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