Chelsea PTO 800 Series Parts Manual
This Chelsea Illustrated Parts List covering the 800 PTO helps you identify the correct gear sets, shifter kits and service parts for your power take-off before you order.
| Models covered | 800 |
| PTO type | Chelsea 800 Series |
| Document | Illustrated Parts List (Chelsea) |
| Length | 12 pages |
| Format | PDF — view below or download free |
What’s inside
- Gear sets & output shaft assemblies
- Shifter & air-shift control kits
- Mounting gaskets & adapter plates
- Housings & cover assemblies
- Seal, bearing & snap-ring kits
- Application & ratio reference tables
- Exploded views with OEM part numbers
Read the manual
This is our interactive copy of the factory manual — part numbers are clickable and every exploded-view callout links to the part. Plain factory PDF if you prefer it.
Chelsea parts & units we stock
Pro Gear and Transmission stocks new, remanufactured and good-used parts for Chelsea PTO units:
Chelsea 800 parts list — every part number linked
This is the bill of materials from the manual above, matched against our own stock. Click any part number to see the listing and current price, or use ▶ Add to drop it straight in your cart. 89 of the 121 lines in this book are parts we carry.
Prices are shown on each product page so you always see the current one. Anything not linked, or marked no longer available, we can still usually source — call (877) 776-4600.
Prefer the book? Download the interactive PDF — same manual, with every part number and every exploded-view balloon clickable.
Bill of Materials — manual page 6
| Item | Part number | Description | Qty | Order |
|---|---|---|---|---|
| 1 | 1-P-331 | Housing, P.T.O. 1 call to confirm availability | ||
| 2 | 2-P-477 | Gear, Output Clutch 1 call to confirm availability | ||
| 3 | 2-P-458 | Gear, Inner Clutch 1 | ▶ Add | |
| 4 | 379485 | Disc, Friction 8 | ▶ Add | |
| 5 | 379595 | Plate, Clutch 7 | ▶ Add | |
| 6 | 37-P-39 | Spring, Clutch 1 | ▶ Add | |
| 329179-1X | Piston and Back-up cylinder sub assembly | ▶ Add | ||
| 7 | 380057-1 | Piston 1 | ▶ Add | |
| 9 | 28-P-178 | Ring, Block Vee 1 | ▶ Add | |
| 10 | 379323-1 | Cylinder, Clutch Back-up 1 | ▶ Add | |
| 11 | 3-P-814 | Shaft, Drive (XC output) Ass'y 3 1 call to confirm availability | ||
| 12 | 379062 | Ring, Retainer 1 | ▶ Add | |
| 14 | 560918 | Bearing, Roller 1 | ▶ Add | |
| 15 | 28-P-244 | O-Ring 2 | ▶ Add | |
| 16 | 31-P-87 | Washer, Thrust (Ass'y 3) 1 call to confirm availability | ||
| 31-P-74 | Washer, Thrust (Ass'y 4) 1 | ▶ Add | ||
| 378098 | Lockring (Ass'y 4) 1 no longer available — call for a replacement | |||
| 17 | 550010 | Bearing, Ball 1 | ▶ Add | |
| 18 | 21-P-346 | Cap, Bearing 1 call to confirm availability | ||
| 19 | 28-P-119 | Seal, Oil 1 | ▶ Add | |
| 20 | 378811 | Back-up Plate, Oil Seal 1 | ▶ Add | |
| 21 | 378849 | Ring, Retainer 1 | ▶ Add | |
| 22 | 28-P-246 | O-Ring 1 | ▶ Add | |
| 23 | 378430-10 | Screw, Hex Head Cap (.321"-18 x .750") 4 | ▶ Add | |
| 24 | 4-P-116 | Spacer (Ass'y 3) 1 call to confirm availability | ||
| 25 | 560929 | Bearing, Ball 1 call to confirm availability | ||
| 26 | 378391 | Ring, Retainer 1 | ▶ Add | |
| 27 | 378402 | Ring, Retainer 1 | ▶ Add | |
| 28 | 28-P-228 | Seal, Oil 1 | ▶ Add | |
| 29 | 500007-29 | Key, Woodruff (XC Output) 1 | ▶ Add | |
| 30 | 35-P-8 | Gasket, Cover Plate 1 | ▶ Add | |
| 31 | 34-P-105 | Plate, Cover 1 call to confirm availability | ||
| 32 | 378430-8 | Screw, Hex Head Cap (.321"-18 x .750") 4 | ▶ Add | |
| 33 | 68-P-2 | Plate, Name 1 | ▶ Add | |
| 34 | 378422 | Screw, Drive 2 | ▶ Add | |
| 328170-113X | Mounting Stud Kit 1 | ▶ Add | ||
| 35 | 378054 | Pin, Dowel (.438" x 1") 2 | ▶ Add | |
| 36 | 379424-21 | Stud (.438"-14 & .438"-20 x 2.250") 4 | ▶ Add | |
| 37 | 500357-12 | Washer, (.438" Lock) 4 | ▶ Add | |
| 38 | 379745 | Flange Nut 4 | ▶ Add | |
| 39 | 378432-29 | Capscrew (.438"-14 x 3.750") 2 no longer available — call for a replacement | ||
| 40 | 378432-32 | Capscrew (.438"-14 x 4.500") 2 no longer available — call for a replacement | ||
| 328948-8X | Gasket & Installation Kit 1 | ▶ Add | ||
| 42 | 379327 | Speed Sensor w/ E.O.C 1 call to confirm availability | ||
| 43 | 28-P-171 | O-Ring w/ E.O.C. 1 | ▶ Add | |
| 44 | 379242 | O-Ring Boss Plug w/ E.O.C 1 | ▶ Add | |
| 379242 | O-Ring Boss Plug w/o E.O.C 2 | ▶ Add | ||
| 45 | 379231 | Pipe Plug (.125"-27 w/ E.O.C.). 1 | ▶ Add | |
| 379231 | Pipe Plug (.125"-27 w/o E.O.C.) 2 | ▶ Add | ||
| 328924-12X | Control Box, Speed Limiter (12v) 1 or no longer available — call for a replacement | |||
| 328924-24X | Control Box, Speed Limiter (24v) 1 call to confirm availability | |||
| 328929-12X | Electric Shift Installation Kit 12v w/ E.O.C. ("K") 1 or | ▶ Add | ||
| 328929-24X | Electric Shift Installation Kit 24v w/ E.O.C. ("L") 1 or | ▶ Add | ||
| 328715X | Electric Shift Installation Kit 12v Low Pressure, Allison ("B") 1 or | ▶ Add | ||
| 328749X | Electric Shift Installation Kit 24v Low Pressure, Allison ("D") 1 | ▶ Add | ||
| 328075X | Pressure Lube Hose 1 | ▶ Add | ||
| LOOSE PARTS | ||||
| 328948-8X | Eight Bolt Gasket & Installation Instructions 1 | ▶ Add | ||
| SERVICE KITS | ||||
| 328678-11X | Shaft & Retaining Ring Service Kit (Ass'y 3) 1 call to confirm availability | |||
| 328678-12X | Shaft & Retaining Ring Service Kit (Ass'y 4) 1 call to confirm availability | |||
Kits — manual page 7
| Item | Part number | Description | Qty | Order |
|---|---|---|---|---|
| 328715X | 12V Shift Installation Kit 1 | ▶ Add | ||
| 328749X | 24V Shift Installation Kit 1 | ▶ Add | ||
| 54 | 379686-1 | Solenoid Valve, 12 Volt for | ▶ Add | |
| 328715X | Kit 1 | ▶ Add | ||
| 379686-2 | Solenoid Valve, 24 Volt for | ▶ Add | ||
| 328749X | Kit 1 | ▶ Add | ||
| 55 | 379254-14 | Wire, Black w/Two Ring Connectors 1 | ▶ Add | |
| 56 | 379254-13 | Wire, Blue w/One Ring Connector 1 | ▶ Add | |
| 57 | 379254-3 | Wire, Green w/One Butt | ▶ Add | |
| 328963X | Parts Bag, 12 Volt Kit (328715X) 1 | ▶ Add | ||
| 328964X | Parts Bag, 24 Volt Kit (328749X) 1 | ▶ Add | ||
| 58 | 379547 | Pressure Switch 1 no longer available — call for a replacement | ||
| 59 | 378881 | Rocker Switch 1 no longer available — call for a replacement | ||
| 60 | 379900 | Fuse Holder, 10 Amp 1 | ▶ Add | |
| 61 | 379449 | Screened Adaptor, 1/4-18 | ▶ Add | |
| 62 | 378966 | Street Tee, Screened 1 | ▶ Add | |
| 63 | 379336 | Bracket 1 | ▶ Add | |
| 64 | 378978 | Indicator Light, 12V (Kits | ▶ Add | |
| 328963X | & 328715X) 1 | ▶ Add | ||
| 379005 | Indicator Light, 24V (Kits no longer available — call for a replacement | |||
| 328964X | & 328749X) 1 | ▶ Add | ||
| 65 | 379253 | Ring Connector 2 | ▶ Add | |
| 66 | 379257 | Splice Connector 1 | ▶ Add | |
| 67 | 379258 | Bracket, Solenoid Mounting 1 | ▶ Add | |
| 68 | 500357-7 | Lock Washer (.188" I.D.) 2 | ▶ Add | |
| 69 | 500457-6 | Screw, Mounting (.190"-32 | ▶ Add | |
| 70 | 379306 | Fork Connector 3 | ▶ Add | |
| 71 | 379252 | Butt Connector 1 | ▶ Add | |
| 72 | 379280 | Adaptor Fitting 2 | ▶ Add |
Parts list (page 8) — manual page 8
| Item | Part number | Description | Qty | Order |
|---|---|---|---|---|
| 86 85 | ||||
| 74 | 379265 | Grommet | ▶ Add | |
| 328924-12X | 12V E.O.C. (Includes Items 73 thru 78) 1 no longer available — call for a replacement | |||
| 328924-24X | 24V E.O.C. (Includes Items 73 thru 78) 1 call to confirm availability | |||
| 73 | 328922-12X | Control Box E.O.C. 12 volt 1 call to confirm availability | ||
| 328922-24X | Control Box E.O.C. 24 volt 1 call to confirm availability | |||
| 74 | 379244 | Bracket, E.O.C. Mounting 1 call to confirm availability | ||
| 75 | 328923-10X | Connector Cable, 10 ft. Standard 1 no longer available — call for a replacement | ||
| 328923-5X | Connector Cable, 5 ft. Optional 1 no longer available — call for a replacement | |||
| 328931X | Mounting Parts, E.O.C. Bracket 1 | ▶ Add | ||
| 76 | 500448-9 | Screw (10-20) 4 | ▶ Add | |
| 77 | 500357-7 | Lockwasher 4 | ▶ Add | |
| 78 | 500376-6 | Nut (10-24) 4 no longer available — call for a replacement | ||
| 328929-12X | 12V E.O.C. Installation Kit (Includes Items 79 thru 92) 1 | ▶ Add | ||
| 328929-24X | 24V E.O.C. Installation Kit (Includes Items 79 thru 92) 1 | ▶ Add | ||
| 79 | 379686-1 | Solenoid Valve, 12V (for 328929-12X) 1 | ▶ Add | |
| 379686-2 | Solenoid Valve, 24V (for 328929-24X) 1 | ▶ Add | ||
| 80 | 379547 | Pressure Switch 1 no longer available — call for a replacement | ||
| 81 | 379449 | Screen Adaptor (1/4-18 NPT) 1 | ▶ Add | |
| 82 | 378966 | Street Tee, Screened 1 | ▶ Add | |
| 83 | 379253 | Ring Connector 1 | ▶ Add | |
| 84 | 379254-14 | Wire, Black w/Two Ring Connectors 1 | ▶ Add | |
| 85 | 379254-13 | Wire, Blue w/One Ring Connector 1 | ▶ Add | |
| 86 | 379254-3 | Wire, Green w/One Butt Connector 1 | ▶ Add | |
| 87 | 379257 | Splice Connector 1 | ▶ Add | |
| 88 | 379258 | Bracket, Solenoid Mounting 1 | ▶ Add | |
| 89 | 500357-7 | Lockwasher (.188" ID) 2 | ▶ Add | |
| 90 | 500457-6 | Screw, Mounting (.190"-32 x .438") 2 | ▶ Add | |
| 91 | 379265 | Grommet 1 | ▶ Add | |
| 92 | 379280 | Adaptor Fitting 2 | ▶ Add | |
Parts list (page 9) — manual page 9
| Item | Part number | Description | Qty | Order |
|---|---|---|---|---|
| 3-P-814 | XC 3 500007-29 None call to confirm availability | |||
| 3-P-727 | XC 4 500007-29 None call to confirm availability | |||
| 3-P-813 | XZ 3 379111 379214 call to confirm availability | |||
| 3-P-796 | XZ 4 379111 379214 call to confirm availability |
Part numbers and descriptions are taken from the Chelsea/Parker parts manual on this page. Chelsea® and Parker® are trademarks of Parker Hannifin Corporation; Pro Gear and Transmission is an independent distributor.
Not sure exactly which unit you have? Check our identification guides, or Ask an Expert — send us photos of your data tag and our drivetrain specialists will identify the unit and the exact parts you need. Or call (877) 776-4600.