ENGINE BBC, 426, BAE, TFX TOOTH COUNT 25 TOOTH PITCH 10 DP 141.14 250521-31 This idler gear is used in our BBC, 426/BAE, and TFX gear drives. It has 25 teeth and a diametral pitch of 10.

ENGINE SBC, SBF, LS TOOTH COUNT 27 TOOTH PITCH 12 DP 129.9 250521-36 This idler gear is used in our SBC, SBF, and LS gear drives. It has 27 teeth and a diametral pitch of 12.