Restore original ride height and handling to the front-left corner of your 2011-2017 Buick Regal with the KYB Strut-Plus Suspension Strut and Coil Spring Assembly, MPN SR4477. This is a complete corner unit — strut, mount and spring — engineered and pre-assembled for a direct install in the front-left position, exactly as the vehicle manufacturer intended.
- Complete corner assembly: combines an OE-restoring KYB Excel-G strut, the upper mount and a matched coil spring in one pre-assembled unit for professional results.
- High carbon steel coil spring: application-engineered to match the strut and help maintain proper ride height while controlling weight without sacrificing ride quality.
- Excel-G strut build: features a stronger steel outer shell and KYB's application-specific precision-designed damping valves.
- Side-specific design: left and right part numbers with side-specific components, and engineered to help vehicles equipped with electronic safety systems (ESC, ABS, etc.).
A strut assembly supports vehicle weight, sets ride height, acts as the steering pivot and helps control stability. If a worn strut or spring on your Regal is the cause of poor handling, sag or a rough ride, this assembly replaces it. Assembled in the USA.
Interchange: 172183 · 272184
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this KYB SR4477 assembly include?
It is a complete corner unit: a KYB Excel-G strut, the upper mount and an application-matched high carbon steel coil spring, pre-assembled for installation.
Which vehicle does it fit?
It is a direct-fit replacement for the front-left corner of the 2011-2017 Buick Regal. See the Buyer's Guide tab to confirm fitment for your vehicle.
What position is this strut assembly for?
This unit is designed for the front-left position, with side-specific components as the vehicle manufacturer intended.
Should I replace both sides at once?
Struts wear together, so replacing the corresponding corner at the same time is a common best practice for balanced handling. This listing covers the front-left unit.
What are signs the original strut may need replacing?
Common signs include a rough or bouncy ride, sagging ride height, uneven tire wear or reduced handling and stability. Diagnose the cause before replacing.
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