SHIM-DEX

SHIM-DEX has revolutionized the use of spark plugs. With the use of SHIM-DEX spark plug shims you will increase power and provide crucial clearance between the spark plug and piston. Never buy extra spark plugs to have them perfectly indexed again! SHIM-DEX shims are reusable many times over. Index your spark plugs easily and effectively with SHIM-DEX!

SHIM-DEX

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Shim-Dex 14F Spark Plug Indexing Washer, 14mm Flat Seat, 24 Pk

Shim-Dex 14F-CC Spark Plug Indexing Washer, 14mm Flat Seat, 24 Pk