Allis Chalmers 170 Spark Plugs

 Allis Chalmers - 190XT, D17 (SN: 75001 and up), 170, 180, 190 (.025" plug gap ) AC Dozer - H4  Cockshutt Tractor: 1600, 1650, 1655, 1750, 1800, 1850 (GAS), 1855 (GAS .020" plug gap) Ford - 2000 3 Cylinder, 4000 3 cylinder (3 cyl), 2600, 2610,...