Replace a worn lower control arm and its ball joint in one job with the MOOG CHASSIS control arm RK80539, a front left lower control arm with ball joint that links the steering knuckle to the chassis and pivots as the suspension moves and the wheels steer. It fits many vehicles, among them the 2006-2013 Chevrolet Impala, the 2014-2016 Chevrolet Impala Limited and the 1997-2003 Pontiac Grand Prix. See the "Vehicles it fits" section for the full list.
MOOG engineers its premium control arms for structural strength and corrosion protection. Because this is a control arm and ball joint assembly, the arm and joint are replaced together as one unit.
- Carbon fiber bearing: an induction-hardened stud works with a patent-pending carbon fiber-reinforced bearing. The bearing is designed to cut socket friction compared with typical non-reinforced bearings, for longer socket life.
- Optimized bushings: built for quiet operation and to resist wear, salt, road grime and oils.
- Structural strength: heat treated to match or beat OE requirements, which helps inhibit premature failure. The ball stud shape is designed for fatigue life and compensates for suspension sag.
- Corrosion protection: coated studs and an e-coated arm help inhibit premature deterioration.
A laser-etched ID marks the part as genuine MOOG, and all necessary installation hardware is included. Precision tolerances are intended to make installation and steering alignment straightforward. If you are shopping for a 1997-2003 Pontiac Grand Prix control arm, note that this one is sold individually for the front left lower position. Replacing both sides together is recommended.
Frequently Asked Questions
Is this a 2006-2013 Chevy Impala control arm, and does it fit the 2014-2016 Chevrolet Impala Limited?
It is listed for the front left lower position on the 2006-2013 Chevrolet Impala and the 2014-2016 Chevrolet Impala Limited. Check the "Vehicles it fits" section to confirm your exact vehicle.
What does a control arm with ball joint do?
The control arm links the steering knuckle to the chassis and pivots as the suspension moves. The ball joint lets the knuckle turn for steering, and this part combines both in one unit.
Does the MOOG RK80539 come with installation hardware?
Yes. It comes with all necessary hardware for installation, and a laser-etched ID marks it as a genuine MOOG part.
What are signs a lower control arm or ball joint may need replacing?
Common signs are clunking over bumps, loose or wandering steering, uneven tire wear, and cracked bushings or a loose ball joint. Diagnose the cause first, because other parts can cause similar symptoms.
Should I get an alignment after installing this control arm?
Yes, having the steering alignment checked after replacing a control arm is recommended. MOOG builds the RK80539 to precision tolerances intended to ease installation and alignment.
