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Crane Cams#271-99459-8Valve Spring Cups
Valve Spring Cups
Essential for use on aluminum heads, Crane's heat-treated billet steel spring cups contain the Outside Diameter of the valve spring and help prevent valvetrain damage from spring seat movement.
Valve Spring Locators
Similar in function to cups, locators use the Inside Diameter of the spring for proper positioning. Great for extra clearance in applications where larger diameter valve springs are employed.