COMP Cams · New
COMP Cams GM Duramax Spring Locators
MPN 4688-16 · Store SKU cca4688-16
Supplier stock checked 11/7/2026, 12:35:17 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
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Product details
The old standard shims will not hold up to the extreme spring pressures and high RPM in today's race engines. COMP Cams offers a simple but effective solution to this problem. These Valve Spring Locators provide a thin, hardened Steel alloy seat that will not only protect the head and shim, but also locate and hold the spring in place. Previously, this part has been available only in a cup form with the retaining portion being on the outside of the part. This required that the head be machined a great deal to accept this cup so COMP now offers an ID locator with the locating shoulder on the inside, as well as the spring cup. Made from hardened steel, these locators use an inboard locating shoulder to center the seat and hold the spring in place. The 4688 seat's 1.100" OD works well with our alve springs in ." guide applications. ID Spring Locator Set of 16 - 1.100" OD, .470" ID, .060" Thickness
Manufacturer fitment & guides
Check 4688-16 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
