RED Oil Pressure Relief Valve Spring - Stock Pressure

We offer these "Red" factory stock pressure oil pump relief valve springs. These are the same springs supplied in factory stock pumps by Mopar when our cars were new. They are also supplied by Melling in their M63 (stock replacement) pumps. These can be used in a M63HP (high pressure) pump to easily convert it back to a stock replacement (M63) pump, or for service replacment purposes in any other pump. These are made from .065" wire, and on a spring testing machine, they will generate approximately 16 pounds of pressure when compressed to 1.500" height.