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SHIM-DEX

Brand logo for 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!