| Item | Part No. | Part Name | Qty | Serial No. |
| 561-35-62200 | RETARDER VALVE ASS'Y | 2001-2050 | ||
| 1 | \6\ | BODY | 2001-@ | |
| 566-35-00012 | VALVE ASS'Y | 2001-@ | ||
| 2 | \6\ | SEAT,VALVE | 2001-@ | |
| 3 | \6\ | VALVE | 2001-@ | |
| 4 | \6\ | STEM | 2001-@ | |
| 5 | \6\ | SPRING | 2001-@ | |
| 6 | \6\ | GUIDE | 2001-@ | |
| 7 | \6\ | O-RING | 2001-@ | |
| 8 | 566-35-16180 | BOLT | 2001-@ | |
| 9 | 566-35-16191 | WASHER,LOCK | 2001-@ | |
| 10 | 566-35-16210 | SPRING | 2001-@ | |
| 11 | 566-35-16220 | PISTON | 2001-@ | |
| 12 | \6\ | O-RING (KIT) | 2001-@ | |
| 13 | \6\ | COVER | 2001-@ | |
| 14 | \6\ | CAM (KIT) | 2001-@ | |
| 15 | \6\ | CAM (KIT) | 2001-@ | |
| 16 | \6\ | GASKET (KIT) | 2001-@ | |
| 17 | 566-35-16271 | SPRING | 2001-@ | |
| 18 | 566-35-16290 | BOLT | 2001-@ | |
| 19 | 566-35-16310 | RING | 2001-@ | |
| 20 | 566-35-16320 | WASHER,LOCK | 2001-@ | |
| 21 | 566-35-16330 | CLAMP | 2001-@ | |
| 22 | 566-35-16341 | BOLT | 2001-@ | |
| 23 | 566-35-16350 | WASHER,LOCK | 2001-@ | |
| 24 | 561-35-62210 | HANDLE | 2001-2050 | |
| 25 | 566-35-16380 | O-RING (KIT) | 2001-@ | |
| 26 | 566-35-16392 | HEAD | 2001-2050 | |
| 27 | 566-35-16413 | PIN,SPRING | 2001-2050 | |
| 28 | 566-35-16420 | WASHER,LOCK | 2001-@ | |
| 29 | 566-35-16441 | SCREW | 2001-@ | |
| 30 | 566-35-16430 | SPACER | 2001-@ | |
| 31 | 566-35-16450 | KNOB | 2001-@ | |
| 32 | 566-35-19120 | PLUNGER | 2001-@ | |
| 33 | 566-35-19130 | SPRING | 2001-@ | |
| 34 | 566-35-19140 | WASHER | 2001-@ | |
| 35 | 566-35-19150 | RING | 2001-@ | |
| 36 | 566-34-19180 | PLATE | 2001-2050 | |
| 37 | 566-35-19190 | BOLT | 2001-@ | |
| 38 | 566-35-19210 | NUT | 2001-@ | |
| 39 | 566-35-19220 | WASHER | 2001-@ |