Keep the rear suspension tracking straight and your tires wearing evenly with the Dorman - OE Solutions Lateral Arm 521-337, a rear lower forward lateral arm that installs as a direct-fit replacement on the 2013-2018 Ford C-MAX, 2000-2018 Ford Focus, 2004-2013 Mazda 3, 2009-2013 Mazda 3 Sport, 2006-2010 and 2012-2017 Mazda 5, 2007-2013 Volvo C30, 2006-2013 Volvo C70, 2004-2012 Volvo S40, and 2005-2011 Volvo V50.
- Suspension link: locates the rear wheel and controls lateral movement to help maintain proper alignment geometry.
- Rear lower forward position: serves the rear lower forward lateral arm location on the listed applications.
- Direct-fit replacement: designed to install on the listed vehicles as a service replacement for a worn or damaged original arm.
A worn lateral arm can allow excess rear-wheel movement, showing up as clunking over bumps, uneven or accelerated tire wear, or an alignment that won't hold. If a failed lateral arm is the cause, replacing it with 521-337 restores the intended locating function. Replace suspension links on both sides together as a matched pair for balanced handling where applicable, and have the vehicle aligned after installation.
Manufacturer part number 521-337 (also 521337).
Frequently Asked Questions
What position does the Dorman 521-337 lateral arm serve?
It is the rear lower forward lateral arm on the listed applications, helping locate the rear wheel and control lateral movement to maintain alignment geometry.
Which vehicles does this lateral arm fit?
It fits the 2013-2018 Ford C-MAX, 2000-2018 Ford Focus, 2004-2013 Mazda 3, plus Mazda 3 Sport, Mazda 5, and Volvo C30, C70, S40, and V50 models. See the "Vehicles it fits" section for the full year-by-year list.
What are signs my lateral arm may need replacing?
Clunking over bumps, uneven or accelerated rear tire wear, and an alignment that won't hold can be signs. Diagnose the cause first, since these symptoms can have other sources.
Should I replace both sides at once?
Where applicable, replacing the lateral arms on both sides together as a matched pair supports balanced handling and even tire wear.
Do I need an alignment after installing this part?
Yes. Replacing a suspension link affects wheel geometry, so have the vehicle aligned after installation per the service procedure.
