ALLISON AUTOMATIC TRANSMISSIONIPOWERMATIC P I AND AT540 4 343 GEAR Speedometer Drive For detailed application use Speedometer Gear Chart 1971 72 TRUCK SPEEDOMETER GEAR CHART DRIVE GEAR y PART NO OF NUMBER COLOR TEETH 3915003 Natural 8 3915004 Solid Blue 8 6261077 Solid Yellow 8 6261078 Solid Orange 8 3708144 Steel g 8 3708145 Steel 8 3964594 Steel 7 3964593 Steel 6 2495296 Steel 7 2480048 Steel 4 8624735 Brown 15 3866742 Steel 7 3866663 Steel 6 3918804 Steel 5 3794272 Steel 4 6769718 P Steel 5 3760297 Steel 5 3760296 Steel 5 l 2431616 Steel 5 I 2232669 Steel 4 2242558 Steel 4 4 DRIVEN GEAR PART NO OF PART NO OF NUMBER COLOR TEETH NUMBER COLOR TEETH A I 3756924 Purple and Orang 19 1359270 White 36 3756926 Purple and White 20 1359271 Red 37 2431617 Steel 15 1359272 Blue 38 I 2232670 Steel 12 1359273 Brown 39 I 2242559 Steel 12 1362048 Black 40 3860341 Solid Brown 18 1362195 Yellow 41 3860342 Natural 19 1362049 Green 42 3860343 Solid Blue 20 1362196 Purple 43 3860344 Solid Red 21 9780470 Dark Gray 44 3860345 Solid Green 22 9775187 Light Blue 45 I 3860346 Solid Black 23 3866798 Code H 18 I 3860347 Solid Yellow 24 3866799 Code J 19 3860348 Solid Orange 25 3866917 Code K 20 T 3968030 Steel 16 3866918 Code L 21 Q 3968031 Steel 17 3866919 Code M 22 3968032 Steel 18 3866793 Code A 20 3749303 Black and White 18 3866794 Code B 21 i 3749242 Green and Yellow 19 3866795 Code C 22 I 3705582 Brown and Green 20 3866796 Code D 23 I 3756911 ellow and Orang 11 3866797 Code E 24 l 3756913 Yellow and Purple 12 3918805 Steel 17 3756915 Green and Black 13 3823436 Steel 15 i 3756917 Green and Purple 14 3756920 Black and Orange 17 9774413 Light Green 34 I 3756922 Black and Purple 18 9780628 Pink 35 wi t GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TM 4 343 4 343 I 4 154 REV 5 79