Keep your rear suspension located and tracking true with the Mevotech Supreme Lateral Arm and Ball Joint Assembly CMS801048. This rear lower forward lateral link with an integrated ball joint drops in as a direct-fit replacement across a wide Subaru, Scion and Toyota range, including the 2009-2018 Subaru Forester, 2010-2019 Subaru Legacy and Outback, 2008-2016 Subaru Impreza, 2013-2015 Subaru XV Crosstrek, 2016-2018 Subaru Crosstrek, 2013-2014 Subaru WRX and WRX STI, 2013-2023 Subaru BRZ, 2013-2016 Scion FR-S, 2017-2020 Toyota 86 and 2022-2025 Toyota GR86 — see the Buyer's Guide tab for the full list of applications.
The lateral arm locates the rear wheel and controls its side-to-side movement, while the integrated ball joint lets the suspension articulate over bumps and through steering inputs. Worn arms or a loose ball joint can show up as clunking, uneven rear tire wear, or vague handling. If a failed lateral arm or ball joint is the cause, this assembly replaces it in the rear lower forward position; have your suspension diagnosed to confirm the source before replacing.
Interchange: 524-777
524777 · 19340907 · TC5148 · LA72615 · LA72615PR · CA5313 · RK100124 · 2607792 · 30030923 · SU00300362 · 20250FG020 · 20250FG021 · X47LA7395 · JTC2844
This part cross-references / interchanges with the following part numbers:
Where is this lateral arm located on the vehicle?
It's the rear lower forward lateral arm and ball joint assembly for the listed applications.
What is this lateral arm made of?
It uses forged steel construction with a structural change for added durability, plus a protective surface treatment to help resist corrosion and rust build-up.
Does it come with a grease fitting and hardware?
Yes — a 180 degree SAE grease fitting is included for simple servicing, along with a part-specific hex nut to speed up ball joint installation.
What are the signs this part may need replacing?
Clunking from the rear, uneven rear tire wear, or vague handling can be signs of a worn lateral arm or ball joint. Have the suspension diagnosed to confirm the cause before replacing.
Will this assembly fit my vehicle?
It fits a range of Subaru, Scion and Toyota models such as the Forester, Legacy, Outback, Impreza, BRZ, FR-S, 86 and GR86. Check the Buyer's Guide tab to confirm your exact year and model.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
