1.25" OD, .625" ID, Valve Spring Shims, 100 Pk. | A-107 | B-107 | C-107

Use these Valve Spring Inserts to support valve springs better. They won't compress to maintain pressure and protect heads from spring abrasion.

Three thicknesses are available:

• .060" - for springs in service
• .030" - for new springs
• .015" - for balancing