In automotive suspension, a control arm is also known as an A-arm. A control arm is a hinged suspension link between the chassis and the suspension upright or hub that carries the wheel. A control arm's inboard (chassis) end is attached by a single pivotfitment type:Direct replacement, part type:Control Arm, part type:Ball Joint Assembly, greasable or sealed:Greasable, surface finish:Polished, surface finish:Rust Protected, oe spec or performance;custom:OE Spec, other part number:K622059, other part number:K622054, other part number:OKD0000145, other part number:CMS301004, other part number:CMS301005, interchange part number:RK622054, interchange part number:RK622059, interchange part number:545009N00A, interchange part number:545019N00A, warranty:1 Year