Oil Pressure Socket, Manufacturer suggested retail price. $19.78 Features and Benefits: Use to remove and replace oil pressure sending units on 1987 to current GM engines including 2.0L, 2.5L, 2.8L, and 3.0L used in Chevy, Buick, Olds, Pontiac, and Cadillac Hex opening is 1-3/16" Turn with 1/2" square drive tools or 15/16" wrench Manufacturer: KD Tools Lifetime warranty does not cover abuse