Restore the front ride height and handling of your 2009-2013 Ford F-150 (2WD) with the KYB Strut-Plus Complete Corner Unit Assembly, MPN SR4172. This front unit arrives fully pre-assembled with a KYB Excel-G strut, mount, and matched coil spring, so one bolt-in part replaces a worn corner. As an original equipment supplier, KYB engineers this assembly to help restore the vehicle's handling and control.
- Complete corner assembly: Combines a KYB Excel-G strut, mount, and spring in one pre-assembled unit for a professional install.
- OE-Restoring strut: Built on a KYB strut with a stronger steel outer shell and application-specific, precision-designed damping valves.
- High-carbon steel coil spring: Application-engineered to match the strut and help hold proper ride height while managing vehicle weight without sacrificing ride quality.
- Safety-system aware: Engineered to help vehicles equipped with electronic safety systems such as ESC and ABS. Assembled in the USA.
A strut assembly supports vehicle weight, sets ride height, and acts as the steering pivot, so signs it may need replacing include excessive bouncing, uneven ride height, or nose dive. Designed for the front position on the listed 2WD F-150 applications.
Interchange: 171140 · 181140
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicles does the SR4172 fit?
It is engineered for the front position on the 2009-2013 Ford F-150 (2WD). Check the Buyer's Guide tab to confirm the fit for your specific truck.
What comes in this assembly?
It is a complete corner unit: a KYB Excel-G strut, the mount, and a matched high-carbon steel coil spring, all pre-assembled and ready to install.
Is this a front or rear unit?
This is a front strut and coil spring assembly for the listed applications.
Do I need to replace both sides?
Struts wear over time, so replacing both front corners together as a matched pair is a common best practice for balanced, even handling. This listing is for one assembly.
What are signs my strut assembly needs replacing?
Common signs include excessive bouncing, uneven or sagging ride height, nose dive when braking, and reduced steering control. Have the cause diagnosed before replacing.
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