SKU: COM4677-16
UPC: 036584283928
MPN: 4677-16
The COMP Cams Spring Seat Locators 1.300 x .570 x .910 (model 4677-16) are precision internal valve spring components engineered for small-block engine builds and high-performance machine shop operations. Supplied as a set of 16 locators, these steel spacers maintain consistent spring preload and prevent valve spring migration during extended high-RPM operation—critical for maintaining seat pressure and preventing catastrophic valve failure.
Each locator measures 1.300 inches outer diameter with a 0.570-inch inner diameter bore and 0.910-inch spring ID, designed to fit inside the spring assembly. The 0.060-inch thickness provides precise valve train geometry control without compromising spring rate characteristics. Steel construction resists thermal cycling and maintains dimensional stability under sustained combustion pressures. Proper locator selection ensures accurate spring seat height, which directly affects rocker arm geometry, push-rod clearance, and overall engine reliability during dyno testing and road duty.
Technicians and engine builders working with small-block platforms—whether for street performance, circle track, or marine applications—depend on quality spring locators to achieve repeatable valve train specifications across multiple engine assemblies. COMP Cams is recognized within the performance community for precision component manufacturing. This 16-pack provides sufficient quantity for multi-cylinder projects or shop inventory, reducing downtime when building or refreshing valve train assemblies.
Spring seat locators are foundational components often overlooked during initial specification but essential for repeatability. Mismatched or worn locators can introduce 0.050 to 0.100 inches of variance in installed spring height—enough to alter valve timing, reduce seat pressure, and compromise engine longevity. Sourcing OEM-specification locators from established manufacturers ensures your build meets engineering tolerances from the start.
Verify compatibility with your specific cylinder head bore diameter and spring assembly configuration before ordering.
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