Allstar Performance Spark Plug Index Shims 14mm .720" O.D. 96506 ALL96506

Allstar Performance Spark Plug Indexing Shims

Allstar Performance Part Number #96506 or ALL96506
Spark Plug Size: 14 mm
Seat Style: Flat Seat
Shim OD: .720"
Shim Degree: 60 and 90 Degree Shims (12 Ea.)
Quantity: Set of 24

Stackable shims index spark plugs at 30 degree intervals up to 360 degrees properly positioning ground strap in cylinder head for increased power and clearance between spark plug and piston.  Shims are intended for use with 14mm flat seat spark plugs only. Package of 24 shims contains 12 silver 60 degree, 12 black 90 degree. Detailed instructions and dial chart included.