SKU: COM4743-16
UPC: 036584391593
MPN: 4743-16
The 1.437 O.D. Spring Shims .645 I.D. .030 Thickness is a precision shim designed for valve spring preload adjustment, ideal for engine builders and performance enthusiasts. These shims are used to fine-tune spring pressure and maintain proper valve train geometry, especially during high-rpm operation.
With an outer diameter of 1.437 inches, an inner diameter of .645 inches, and a thickness of .030 inches, these shims allow for incremental adjustments without needing to replace the entire spring assembly. This compact profile is particularly useful for tuning applications where small changes can lead to significant performance improvements.
These shims are compatible with most standard coil spring designs and are beneficial for custom cam installations and forced-induction builds, where factory spring pressure may not suffice for higher lift or duration cams.
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