For engines with a front gear train.
Pinions have 23/24 Helix Teeth.

For engines with CPL#s 591, 599, 714, 721, 742, 831, 1279, 1288 ,1519, 1522, 1523, 1524, 1551, 1816, 1889, 1914, 1948, 1961, 1962, 1975, 2014, 2063, 2071, 2122, 2205, 2208, 2242, 2243, 2292, 2347, 2372, 2373, 2446, 2447, 2486, 2530, 2686, 2891, 2893, 8208, 8217, 8236, 8266, 8267, 8304, 8305, 8306, 8444