1.650in Spring Seat Cup

The 1.650in Spring Seat Cup from COMP CAMS is a precision valve spring locator engineered for serious engine builders and high-performance mechanics who demand reliability in critical fastening applications. This outside-mounted spring seat cup is an essential component in valve train assembly, securing the valve spring assembly to the cylinder head with exact concentricity and load distribution. Whether you're building a street engine, race motor, or restoring a classic, this locator ensures your valve springs seat properly and maintain their designed preload throughout engine operation.

Manufactured from durable steel and featuring a 1.730 inch outer diameter with a 0.640 inch inner diameter bore, this spring seat cup is designed to work with 1.650 inch spring outer diameters and measures 0.060 inches in thickness. The precision engineering ensures minimal runout and consistent spring pressure across the valve face, preventing spring bind, coil bind, and premature failure. The compact 1.9 x 0.6 x 4.1 inch footprint and lightweight 0.05 pound design make installation straightforward without compromising structural integrity or performance characteristics critical to cylinder head function.

Professional engine builders, automotive technicians, and enthusiasts restoring or modifying small-block and big-block engines will benefit from this proven COMP CAMS component. It's ideal for custom builds where OEM spring seats are worn, damaged, or require upgrade specifications. This locator works seamlessly in applications requiring aftermarket valve springs and rocker arm upgrades, ensuring proper geometry and eliminating variables that could compromise valvetrain stability under high RPM or boost conditions. Always verify spring diameter and seat specifications before installation to guarantee compatibility with your complete valve assembly.