Advantage™ Front Passenger Side Lower Non-Adjustable Control Arm and Ball Joint Assembly (46D3056A) by ACDelco®. Quantity: 1 per Pack. ACDelco Advantage Control Arms offer outstanding performance at an extremely competitive price. The Advantage corrosion-resistant arms are thoroughly tested to ensure durability and feature lightweight aluminum construction, where required, and greaseable ball joints for easy maintenance and long life, where applicable. ACDelco Advantage Control Arms are the value leader for budget-conscious buyers.