| Item | Part No. | Part Name | Qty | Serial No. |
| 20K-57-31161 | SEAT ASSEMBLY | H50051- | ||
| 1 | 20K-57-31380 | SEAT | H50051- | |
| 2 | 20K-57-31390 | SEAT | H50051- | |
| 3 | 20K-57-31410 | SCREW | H50051- | |
| 4 | 20K-57-31420 | NUT | H50051- | |
| 5 | 20K-57-31430 | SCREW | H50051- | |
| 6 | 20K-57-31440 | REST | H50051- | |
| 7 | 20K-57-31450 | BAND | H50051- | |
| 8 | 20K-57-31460 | WASHER | H50051- | |
| 9 | 20K-57-31470 | SCREW | H50051- | |
| 10 | 20K-57-31480 | RIVET | H50051- | |
| 11 | 20K-57-31490 | WASHER | H50051- | |
| 12 | 20K-57-31510 | WASHER | H50051- | |
| 13 | 20K-57-31520 | SUPPORT | H50051- | |
| 14 | 20K-57-31530 | PLATE | H50051- | |
| 15 | 20K-57-31540 | BUMPER | H50051- | |
| 16 | 20K-57-31550 | SPRING | H50051- | |
| 17 | 20K-57-31560 | PLATE | H50051- | |
| 18 | 20K-57-31570 | RIVET | H50051- | |
| 19 | 20K-57-31580 | SHEET | H50051- | |
| 20 | 20K-57-31590 | BLOCK | H50051- | |
| 21 | 20K-57-31610 | BOX | H50051- | |
| 22 | 20K-57-31620 | COVER KIT | H50051- | |
| 23 | 20K-57-31630 | BRACKET KIT | H50051- | |
| 24 | 20K-57-31640 | RIVET | H50051- | |
| 25 | 20K-57-31650 | WASHER | H50051- | |
| 26 | 20K-57-33340 | COVER LHS | H50051- | |
| 27 | 20K-57-31670 | BEARING | H50051- | |
| 28 | 20K-57-31680 | SPRING | H50051- | |
| 29 | 20K-57-31690 | PLATE | H50051- | |
| 30 | 20K-57-31710 | SCREW | H50051- | |
| 31 | 20K-57-31720 | SCREW | H50051- | |
| 32 | 20K-57-31730 | NUT | H50051- | |
| 33 | 20K-57-31740 | LEVER | H50051- | |
| 34 | 20K-57-31750 | HANDLE | H50051- | |
| 35 | 20K-57-31760 | PLATE | H50051- | |
| 36 | 20K-57-31770 | SCREW | H50051- | |
| 37 | 20K-57-33350 | COVER RHS | H50051- | |
| 38 | 20K-57-31790 | SEAT | H50051- | |
| 39 | 20K-57-31810 | SHEET | H50051- | |
| 40 | 20K-57-31820 | LATCH | H50051- | |
| 41 | 20K-57-31830 | COVER | H50051- | |
| 42 | 20K-57-31840 | HANDLE | H50051- | |
| 43 | 20K-57-31850 | HANDLE | H50051- | |
| 44 | 20K-57-31860 | REST | H50051- | |
| 45 | 20K-57-31870 | BUSHING | H50051- | |
| 46 | 20K-57-31880 | COVER | H50051- | |
| 47 | 20K-57-31890 | SCREW | H50051- | |
| 48 | 20K-57-31910 | RIVET | H50051- | |
| 49 | 20K-57-32210 | SCREW | H50051- | |
| 50 | 20K-57-31930 | ROD | H50051- | |
| 51 | 20K-57-31940 | SPRING | H50051- | |
| 52 | 20K-57-31950 | BUSHING | H50051- | |
| 53 | 20K-57-31960 | SCREW | H50051- | |
| 54 | 20K-57-31970 | LEVER | H50051- | |
| 55 | 20K-57-33360 | ARM REST RHS | H50051- | |
| 56 | 20K-57-33370 | ARM REST LHS | H50051- | |
| 57 | 20K-57-32110 | RAIL KIT | H50051- | |
| 58 | 20K-57-32120 | SCREW | H50051- | |
| 59 | 20K-57-32130 | SCREW | H50051- | |
| 60 | 20K-57-32140 | SEAT BELT KIT | H50051- | |
| 61 | 20K-57-32190 | CABLE | H50051- | |
| 62 | 20K-57-32160 | BAND | H50051- | |
| 63 | 20K-57-32170 | BAND | H50051- | |
| 64 | 20K-57-32180 | COVER | H50051- |