1639-481
	Optional Kit Low Alt.
	1639-477
	Optional Kit High Alt.
1	0702-187
	Sprocket Assembly-40T (inc. 2-6 and 8)
1	0702-170
	Sprocket Assembly-39T (inc. 2-8) (Over 5, 000 ft Alt.)
2	N/A
	. Sprocket
3	0602-144
	. Retainer, Spring
4	0602-133
	. Pin, Slip
5	0602-138
	. Spring, Compression
6	8007-397
	. Screw, Machine
6	0623-182
	. Screw, Machine (Over 5,000 ft Alt.)
7	0123-430
	. Nut, Lock (Over 5,000 ft Alt.)
8	0602-016
	. Bearing
9	0602-012
	Spacer, Shaft
10	1602-042
	Chain-72P
10	1602-041
	Chain-70P (Over 5,000 ft Alt.)
11	1602-048
	Extension, Driveshaft
12	0702-048
	Gear, Reverse-55T (inc. 13-15)
13	0602-023
	. Washer, Thrust
14	0602-022
	. Bearing, Thrust
15	0602-024
	. Ring, Retaining
16	8002-231
	Screw, Cap
17	8050-272
	Washer
18	0702-372
	Retainer, Shaft (inc. 41)
19	0602-028
	Spring, Return
20	0602-899
	Idler, Reverse Assembly-22T (inc. 44)
20	0602-871
	Idler, Reverse Assembly-24T (inc. 44) (Over 5,000 ft Alt.)
21	1602-045
	Bearing
22	0602-872
	Shaft, Reverse
23	0702-365
	Idler, Reverse Assembly-19T (inc. 21)
24	0602-215
	Spacer, Reverse Idler
25	8002-130
	Screw, Cap
26	8050-242
	Washer
27	0623-465
	Nut, Lock
28	0623-231
	Washer, Spring
29	0602-452
	Sprocket-23T (Low Alt.)
29	0602-444
	Sprocket-19T (High Alt.)
30	0123-694
	Washer
31	8041-426
	Nut, Lock
32	0602-198
	Plate, Flange
33	1602-052
	Bearing, 7/8 in.
34	0107-003
	Seal, O-Ring
35	0607-025
	O-Ring, Stud
36	1602-051
	Bearing, 1 in.
37	0623-317
	Stud, Ribbed
38	8040-426
	Nut, Lock
39	0602-366
	Aligner, Idler-Pin
40	1602-044
	Washer, Thrust
41	8070-153
	Pin, Spring
42	1602-046
	Washer, Tab Lock
43	0602-783
	Retainer, Shaft Extension
44	0602-205
	Bearing, Caged