| Number On Belt | Belt Part Number | Comet Series | Belt Top Width |
|---|---|---|---|
| 883 - | XXXXXXA | TC88 (obsolete) | 5/8" Symmetrical |
| 993 - | XXXXXXA | CAT99 (obsolete) | 5/8" Asymmetrical |
| 884 - | XXXXXXA | 20 Series | 3/4" Symmetrical |
| 994 - | XXXXXXA | 30 Series | 3/4" Asymmetrical |
| 40 - | XXXXXXA | 40/44 Series | 7/8" Symmetrical |
Comet 5/8" & 3/4" Top Width Belts | ||||||
|---|---|---|---|---|---|---|
Series, Top Width & Part Number |
Center Distance Setting |
Belt Size |
TC88 |
CAT99 |
20 Series |
30 Series |
6" Driven |
7" Driven |
Outer |
| 200419A 883-70 |
200393A 993-70 |
203578A 884-70 |
203589A 994-70 |
6-15/16 to 7 | NO FIT | 27-1/32 |
| 200420A 883-75 |
200394A 993-75 |
203579A 884-75 |
203590A 994-75 |
7-1/8 to 7-3/16 | 6-1/4 to 6-5/16 | 28-21/64 |
| 200421A 883-80 |
200395A 993-80 |
203580A 884-80 |
203591A 994-80 |
7-9/16 to 7-5/8 | 6-13/16 to 6-7/8 | 29-9/32 |
| 200422A 883-85 |
200396A 993-85 |
203581A 884-85 |
203592A 994-85 |
8-3/16 to 8-1/4 | 7-5/16 to 7-3/8 | 30-15/64 |
| 200423A 883-90 |
200397A 993-90 |
203582A 884-90 |
203593A 994-90 |
8-11/16 to 8-3/4 | 7-3/4 to 7-13/16 | 31-15/64 |
| 200424A 883-95 |
200398A 993-95 |
203583A 884-95 |
203594A 994-95 |
9-3/16 to 9-1/4 | 8-5/16 to 8-3/8 | 32-13/64 |
| 200425A 883-100 |
200399A 993-100 |
203584A 884-100 |
203595A 994-100 |
9-5/8 to 9-11/16 | 8-3/4 to 8-13/16 | 33-11/64 |
| 203282A 883-105 |
Not Offered |
203585A 884-105 |
203596A 994-105 |
9-15/16 to 10 | 9-3/16 to 9-1/4 | 33-25/32 |
| 202683A 883-110 |
202675A 983-110 |
203586A 884-110 |
203597A 994-110 |
10-3/4 to 10-13/16 | 9-13/16 to 9-7/8 | 35-9/64 |
| 202943A 883-120 |
202944A 993-120 |
203587A 884-120 |
203598A 994-120 |
11-11/16 to 11-3/4 | 10-15/16 to 11 | 37-7/64 |
| 200426A 883-130 |
202682A 993-130 |
203588A 884-130 |
203599A 994-130 |
13-1/16 to 13-1/8 | 12-1/8 to 12-3/16 | 39-25/32 |
This Chart shows how the Comet Belt Selection System works for all Comet 5/8" & 3/4" top width belts | ||||||
Be sure that you have studied the charts to insure the correct belt size has been selected (center distance and series). An incorrect belt size can cause excessive wear and possible damage to the belt, torque converter components, bearings... even your engine.
Should your machine's center distance between the crankshaft and the jackshaft fall between the center distance (C.D.) settings listed here, select from the two belts, the one with the larger outside circumference (O.C.) for best wear and to avoid machine "creep" during idling.
Comet 40 & 44 Series 7/8" Top Width Belts | |||
|---|---|---|---|
| Part Number (20XXXXA) |
40S Center Distance (CD for 7-1/2" Driven) |
44S Center Distance (CD for 8-1/2" Driven) |
Belt Outer Circumference |
| 203783A 40-75 |
7 1/4 | ------ | 31 61/64 |
| 203784A 40-80 |
7 7/8 | ------ | 32 29/32 |
| 203785A 40-85 |
8 3/16 | ------ | 33 7/8 |
| 203786A 40-90 |
8 5/8 | 7 5/8 | 34 27/32 |
| 203787A 40-95 | 9 3/8 | 8 3/16 | 35 51/64 |
| 203788A 40-100 |
9 3/4 | 8 11/16 | 36 25/32 |
| 203792A 40-105 |
10 1/8 | 9 3/16 | 37 3/4 |
| 203789A 40-110 |
10 1/2 | 9 5/8 | 38 21/32 |
| 203790A 40-120 |
11 1/2 | 10 9/16 | 40 1/2 |
| 203791A 40-130 |
12 5/8 | 11 11/16 | 42 21/32 |
| 204331A 40-140 |
13 3/4 | 12 5/8 | 44 17/32 |
Symmetric 40 & 44 Series Belts 7/8" top width, kevlar .45 thick, 30 degree | |||