MidUSA

INDEXING TOOL AND WASHERS FOR 14MM SPARK PLUGS

$55.40
The term "indexing" when referring to spark plugs, is the process of adjusting the spark plug electrode to the correct position in the combustion chamber. More complete combustion and consequently more horsepower is developed by indexing the electrode gap toward the center of the piston, favoring the exhaust side if possible.
Accel
Copper Indexing Washers Assortment Kit
Fits all models with 14mm spark plugs
Includes (10) .043", (10) .054" & (10) .064" thick washers
Each increment of washer size changes the final angle of the ground electrode by 100°
By: HOLLEY PERFORMANCE PRODUCTS,INC.