Allstar Performance Spark Plug Index Shims - 14mm - Small O.D. (All Pro) Longacre Racing Products Aluminum wheel cover secures to

Aluminum wheel cover secures to 15" Weld beadlock wheels or non-beadlock wheels equipped with a retaining ring

Popular IMCA modified application

28 in Wide

poor headlight aim

Allstar Performance Spark Plug Index Shims - 14mm - Small O.D. (All Pro) Longacre Racing Products Aluminum wheel cover secures toStackable shims index spark plugs at 30 intervals up to 360, 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, 12 black 90, detailed instructions, and dial chart. Specialty items for the Shop, Trailer and Track. The Allstar Performance brand offers thousands of hard to find,