Federal-Mogul’s Moog Problem Solver upper ball joint enables vehicle service providers to eliminate unnecessary replacement of complete control arm assemblies on 2005-07 Cadillac STS and 2004-07 Cadillac SRX models. The new upper ball joint (P/N K500065) is available as a separate component that can be easily pressed into the vehicle’s original control arm, compared to the OE-design ball joint and other aftermarket units that can only be purchased as part of a costlier complete control arm/spring mount assembly, the company noted.