Designed to help restore factory ride height and steering control, the KYB Strut-Plus Suspension Strut and Coil Spring Assembly SR4450 is a complete pre-assembled front-right corner unit — strut, mount, and spring in one. It drops in as a direct-fit replacement for the 2008-2010 Toyota Highlander. As an original-equipment supplier, KYB engineers each Strut-Plus to help bring back the handling and control your vehicle was designed to deliver.
- Complete corner unit: Combines a KYB Excel-G strut, mount, and coil spring, engineered and pre-assembled for professional results with no separate spring compression required.
- OE-restoring build: Starts with an OE-Restoring KYB Excel-G strut featuring 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 maintain proper ride height without sacrificing ride quality.
- Side-specific design: This is the FRONT RIGHT unit, built with left/right part numbers and components as the vehicle manufacturer intended, and engineered to work with electronic safety systems (ESC, ABS, etc.).
Winner of the 2018 Best Overall Import Aftermarket Product award and a #1 recommended OE replacement choice for Asian vehicles.
Interchange: 172483
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicle does the SR4450 fit?
It is a direct-fit replacement for the 2008-2010 Toyota Highlander. Check the Buyer's Guide tab to confirm it matches your specific vehicle.
Which corner is this assembly for?
This is the FRONT RIGHT unit. KYB uses side-specific part numbers and components, so order the correct side for your application.
Is this a complete, pre-assembled unit?
Yes. The Strut-Plus is a complete corner assembly combining the KYB Excel-G strut, mount, and coil spring, pre-assembled so no spring compression is needed.
What kind of spring does it use?
It uses a high carbon steel coil spring, application-engineered to match the strut and help maintain proper ride height without sacrificing ride quality.
Should I replace both sides at once?
Struts wear over time, so replacing the opposite side as a matched pair is a common best practice for balanced handling. This listing covers the front right unit only.
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