Don't just throw your spark plugs in a tin or bowl, keep them neatly organized so you can analyze your mixture and timing the right way!
Lightweight yet durable; this 3D printed spark plug holder is universal and will fit most spark plugs for gasoline powered cars. This one has 8 holes, so you'll need two if you have a Hemi!
Made to order; allow 3 business days for manufacturing before this ships out.
