Accel Index Washer - Spark Plug - Flat - Copper

{brand}, For perfect positioning of the plug electrode and an unobstructed spread of the spark flame, ACCEL spark plug indexing washer kits are the way to go. These soft copper spark plug washers allow you to adjust the electrode position for optimum flame front generation or maximum plug-to-piston clearance. In racing, even a small advantage could earn big rewards, and these ACCEL spark plug indexing washer kits offer an inexpensive way to gain a modest edge. Spark Plug Thread Size 14mm.