PAC Racing Springs PAC-S102-16 valve spring retainers. Features inside design, 0.060 in thick, 1.550 in OD, 0.635 in ID, 0.855 in spring ID, chromoly, set of 16, ideal for performance builds.

PAC Racing Springs PAC-S109-16 valve spring retainers. Features inside design, 0.060 in thick, 1.650 in OD, 0.570 in ID, 0.630 in spring ID, chromoly, set of 16, ideal for performance builds.

PAC Racing Springs PAC-S133-16 valve spring retainers. Features inside design, 0.030 in thick, 1.650 in OD, 0.570 in ID, 0.630 in spring ID, chromoly, set of 16, ideal for performance builds.

PAC Racing Springs PAC-S183-16 valve spring shims. Features 0.030 in thick, 1.040 in OD, 0.575 in ID, steel, set of 16, ideal for precise valve spring adjustments in performance builds.

PAC Racing Springs PAC-S191-16 valve spring shims. Features 0.015 in thick, 1.250 in OD, 0.570 in ID, steel, set of 16, ideal for precise valve spring adjustments in performance builds.

PAC Racing Springs PAC-S190-16 valve spring shims. Features 0.020 in thick, 1.250 in OD, 0.570 in ID, steel, set of 16, ideal for precise valve spring adjustments in performance builds.

PAC Racing Springs PAC-S189-16 valve spring shims. Features 0.030 in thick, 1.250 in OD, 0.570 in ID, steel, set of 16, ideal for precise valve spring adjustments in performance builds.

PAC Racing Springs PAC-S188-16 valve spring shims. Features 0.050 in thick, 1.250 in OD, 0.570 in ID, steel, set of 16, ideal for precise valve spring adjustments in performance builds.

PAC Racing Springs PAC-S187-16 valve spring shims. Features 0.015 in thick, 1.500 in OD, 0.570 in ID, steel, set of 16, ideal for precise valve spring adjustments in performance builds.

PAC Racing Springs PAC-S195-16 valve spring shims. Features 0.015 in thick, 1.500 in OD, 0.645 in ID, steel, set of 16, ideal for precise valve spring adjustments in performance builds.

PAC Racing Springs PAC-S186-16 valve spring shims. Features 0.020 in thick, 1.500 in OD, 0.570 in ID, steel, set of 16, ideal for precise valve spring adjustments in performance builds.

PAC Racing Springs PAC-S194-16 valve spring shims. Features 0.020 in thick, 1.500 in OD, 0.645 in ID, steel, set of 16, ideal for precise valve spring adjustments in performance builds.