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PAC Racing Valve Spring Seats and Cups PAC-S105-16
Part Number: RSC-PAC-S105-16
PAC Racing Valve Spring Seats and Cups
Valve Spring Locator, Inside Locating Shoulder, Chromoly, 0.700 in. Inner Spring, 1.550 in. O.D., 0.575 in. I.D., 0.060 in. Thick, Set of 16
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Estimated Ship Date: Oct 22, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
PAC-S105-16
Part Type:
Product Line:
Summit Racing Part Number:
RSC-PAC-S105-16
Locating Shoulder Type:
Inside
Inside Diameter of Inner Spring (in.):
0.700 in.
Locator Thickness (in.):
0.060 in.
Outside Diameter (in.):
1.550 in.
Inside Diameter (in.):
0.575 in.
Locator Material:
Chromoly
Quantity:
Sold as a set of 16.
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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