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Improve the burn with Allstar Performance spark plug indexing shims. These aluminum washers make every spark count by allowing you to expose the open end of the ground strap to the fuel/air charge. The packs contain silver 60 degree and black 90 degree shims, along with instructions and a dial chart. Put your plugs in a winning position with a set of Allstar spark plug indexing shims.
( 7 )
$21.99
Indexing your spark plugs makes a huge improvement in how your race car drives. JR Race Car spark plug index washers are flat seat-styles precision-stamped from copper. There are three thickness sizes per package. Every little bit counts when tuning for that extra ounce of available power.
( 5 )
$7.99
B&B Performance spark plug indexing shims properly align your ignition spark with the intake valve, adding increased horsepower. These soft copper gaskets are available in three thicknesses per set, allowing you to adjust the electrode's location when the spark plug is torqued in the cylinder head. Positioning the spark at the most advantageous location will provide a performance improvement. The shims are available in different sizes, for flat or tapered spark plug seating.
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$24.79
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$35.99
Moroso spark plug indexing washers are designed for use on all 14mm spark plugs. They include 30 washers with three thicknesses to choose from. Washers will correct the electrode placement on any plug and simplify the time-consuming task of spark plug indexing.
( 46 )
$30.99
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$31.99
CSR spark plug indexing washers are designed for use on all 14mm spark plugs. They include washers with three thicknesses to choose from. These washers will correct the electrode placement on any plug, and simplify the time-consuming task of spark plug indexing.
( 1 )
$44.95
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