Parts list:
| № | Number | Qty | Name | Options |
|---|---|---|---|---|
| 1 | GP12728 | 2 | LOCKING COLLAR | (SUB GP426-504) (MARKED GP20X13A) |
| 2 | GP12727 | 2 | RING | (SUB GP426-504) (MARKED GP20X13A) |
| 3 | GP12AA726 | 2 | RIM | (SUB GP426-504) (MARKED GP20X13A) |
| 4 | 19H1900 | 12 | Cap Screw | 5/16" X 3/4" |
| 4 | 19H2020 | 12 | Cap Screw | 5/16" X 1/2" |
| 4 | 12H303 | 12 | Lock Washer | 5/16" |
| 5 | GP12694 | 2 | EXHAUST CAP | (SUB GP100016) |
| 5 | GP100016 | 2 | CAP | |
| 5 | GP12807 | 2 | EXHAUST CAP | NO LONGER AVAILABLE |
| 6 | GP12735 | 2 | GASKET | (SUB GP12806) |
| 6 | GP12806 | 2 | GASKET | |
| 7A | 14H927 | 2 | Nut | 1-1/4" |
| 7B | GP12802 | 2 | NUT | NO LONGER AVAILABLE |
| 8A | GP12695 | 2 | WASHER | (SUB GP12695B) |
| 8A | GP12695B | 2 | WASHER | |
| 8B | GP12800 | 2 | WASHER | |
| 9 | GP12803 | 2 | WASHER | (NO LONGER AVAILABLE) |
| 10 | GP12801 | 2 | NUT | |
| 11 | JD8191 | 2 | Bearing Cone | |
| 12 | JD9021 | 2 | Bearing Cup | |
| 13 | GP12690 | 20 | NUT | |
| 13 | GP12690 | 10 | NUT | R.H. THREAD |
| 13 | GP12813 | 10 | NUT | L.H. THREAD |
| 14 | GP12689 | 20 | BOLT | |
| 14 | GP12815 | 10 | BOLT | L.H. THREAD |
| 14 | GP12689 | 10 | BOLT | R.H. THREAD |
| 15 | 14H1031 | 20 | Nut | 3/4" |
| 16 | GP12719 | 2 | BEARING CUP | |
| 17 | GP12691 | 2 | BEARING CONE | |
| 18 | GP12693 | 2 | SEAL | (SUB GP12693B) |
| 18 | GP12693B | 2 | SEAL | |
| 19 | GP12A578 | 2 | HUB | NO LONGER AVAILABLE |
| 19 | GP12A808 | 1 | HUB | L.H., NO LONGER AVAILABLE |
| 19 | GP12A812 | 1 | HUB | R.H., (NO LONGER AVAILABLE) |
| 20A | GP12540 | 2 | SPINDLE | |
| 20B | GP12799 | 2 | SPINDLE | |
| 21 | 24H1396 | 20 | Washer | 25/32" X 1-1/2" X 0.105" |
| 22 | 11H222 | 2 | Cotter Pin | 3/16" X 2" |
| 23 | [] | 2 | (SUB GP426-504) (MARKED GP20X13A) | |
| 24 | [] | 2 | (SUB GP426-504) (MARKED GP20X13A) | |
| 25 | GP426-504 | 2 | RIM | (MARKED GP20X13A) (HT555-006 MAY BE USED AS ALTERNATE) |
| 25 | GP426-571 | 2 | RIM | (SUB GP426-504) (MARKED GP201350) |