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PAC Racing Valve Spring Seats and Cups
Valve Spring Locator, Inside Locating Shoulder, Chromoly, 1.270 in. O.D., 0.575 in. I.D., 0.060 in. Thick, Each
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Estimated Ship Date from OH, GA, TX: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
PAC-S138
Part Type:
Product Line:
Summit Racing Part Number:
RSC-PAC-S138
Locating Shoulder Type:
Inside
Outside Diameter of Outer Spring (in.):
1.270 in.
Inside Diameter of Inner Spring (in.):
0.615 in.
Locator Thickness (in.):
0.060 in.
Outside Diameter (in.):
1.270 in.
Inside Diameter (in.):
0.575 in.
Locator Material:
Chromoly
Quantity:
Sold individually.
PAC Racing Valve Spring Seats and Cups
PAC Racing valve spring seats and cups are a great way to prevent dancing springs, which would tear up your aluminum heads. High performance racing engines place extreme pressure on the springs. These retainers are essential for use on aluminum heads. They fit the inside or outside diameter of the springs, preventing spring seat movement.
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Some parts are not legal for use in California or other states with similar laws / regulations
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