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A COMP Cams steel valve spring retainer engineered with 3D CAD and FEA to reduce stress and mass while allowing increased lift. CNC-machined to tight tolerances from SAE 4140 chromemoly steel and finished in black oxide. Specified for a 3/8" valve stem and 1.320" stem size details noted; built for larger-diameter springs where stronger, lighter retainers improve spring control.
COMP Cams Steel Retainers 3/8in 1.437in
