Chelsea PTO 522 Series Parts Manual
Model Number Designation
| Item | Part No. | Description | Qty | Notes | Price |
|---|
Power Take-Off Bill of Materials 522 Series
Click a number on the diagram to highlight that part below.
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 1P599X | P.t.o. Housing W/dowel Pin | 1 | — | Call for availability | ||
| 1P608X | P.t.o. Housing W/dowel Pin ("r" Housing) | — | Call for availability | |||
| 2 | 379920 | Dowel Pin | 2 | — | Call for availability | |
| 3 | 560990 | Ball Bearing Input Shaft | 1 | — | Call for availability | |
| 4 | 378098 | Snap Ring Input Shaft | 1 | — | No longer available — call for replacement | |
| 5 | 5P1388 | Input Gear, ''t' Ratio (31 Teeth) | 1 or | $107.84 | Add to Cart | |
| 5P1389 | Input Gear, "v" Ratio (34 Teeth) | 1 | — | Call for availability | ||
| 6 | 3P967 | Input Shaft, "aa" Input | 1 or | — | Call for availability | |
| 7 | 561016 | Input Bearing Needle Roller, "aa" Input" | 1 or | — | Call for availability | |
| 8 | 22P115 | Gasket, Housing | 1 | $12.57 | Add to Cart | |
| 9 | 21P664 | Rear Mounting Plate, "aa" Input | 1 or | — | Call for availability | |
| 10 | 3796766 | Hex Capscrew, (M12 1 .5 X 25) | 2 | — | No longer available — call for replacement | |
| 11 | 561017 | Bearing Cylindrical Roller | 1 | — | Call for availability | |
| 12 | 379918 | Snap Ring Shifter Rod | 2 | — | Call for availability | |
| 13 | 2P821 | Output Gear, "t" Ratio (23 Teeth) | 1 or | $106.06 | Add to Cart | |
| 2P822 | Output Gear, "v" Ratio (20 Teeth) | 1 | — | Call for availability | ||
| 14 | 32P183 | Shifter Fork | 1 | — | Call for availability | |
| 15 | 37P21 | Shifter Spring | 1 | $2.86 | Add to Cart | |
| 16 | 11P155 | Shifter Rod | 1 | — | Call for availability | |
| 17 | 28P41 | O-ring Shifter Rod | 1 | $5.03 | Add to Cart | |
| 18 | 3P959 | Output Shaft, "xy" | 1 or | — | Call for availability | |
| 19 | 561018 | Output Bearing | 1 | $37.34 | Add to Cart | |
| 20 | 379919 | Snap Ring Internal | 1 | $9.75 | Add to Cart | |
| 21 | 378477 | Snap Ring Output Shaft | 1 | $3.29 | Add to Cart | |
| 22 | 28P278 | Oil Seal | 1 | $52.57 | Add to Cart | |
| 23 | 5008973 | Shipping Plug | 1 | — | No longer available — call for replacement | |
| 24 | 379652 | Indicator Switch Normally Closed | 1 | $40.79 | Add to Cart | |
| 379633 | Indicator Switch Normally Closed ("e" Shift Option) | $47.22 | Add to Cart | |||
| 25 | 35P93 | Gasket, Cover Plate | 1 | $11.55 | Add to Cart | |
| 26 | 34P133 | Cover Plate | 1 | $35.11 | Add to Cart | |
| 27 | 3784296 | Hex Capscrew, ( .250" 20 X .625") | 4 | $3.62 | Add to Cart | |
| 28 | 68P2 | Name Plate | 1 | $2.65 | Add to Cart | |
| 29 | 378422 | Drive Screw Loose Parts | 2 | $11.52 | Add to Cart | |
| 32838837X | Installation Kit ("a" Shifter) | 1 | $367.41 | Add to Cart | ||
| 32838847X | Installation Kit ("p" Shifter) | 1 | $563.43 | Add to Cart | ||
| 32838848X | Installation Kit ("q" Shifter) | 1 | $544.19 | Add to Cart | ||
| 32838882X | Installation Kit ("p' Shifter "ac" Input Only) | 1 | $857.39 | Add to Cart | ||
| 378414 | Pressure Protection Valve ("v" Shift Only) | 1 | $66.97 | Add to Cart | ||
| 379640 | Booted Connector ("v" Shifter Only) | 1 | $18.40 | Add to Cart | ||
| 3294311X | Gasket & Seal Service Kit ("aa", "ab" "am" Input) | 1 | — | Call for availability | ||
| 3294312X | Gasket & Seal Service Kit ("ac" Input) | 1 | — | No longer available — call for replacement | ||
| 3294313X | Gasket & Seal Service Kit ("ad" Input) | 1 | — | Call for availability | ||
| 3294321X | Bearing Service Kit ("aa", "ab" & "am " Input) | 1 | — | Call for availability | ||
| 3294322X | Bearing Service Kit ("ac" & "ad" Input) | 1 | — | No longer available — call for replacement |
Zmtec Parts
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 32838882X | 12V Electric/air Installation Kit W/zmtec Wire Harness | $857.39 | Add to Cart | |||
| 1 | 378416 | Hex Nipple, (.25 18 Nptf) | 1 | $4.80 | Add to Cart | |
| 2 | 378414 | Pressure Protection Valve | 1 | $66.97 | Add to Cart | |
| 3 | 379042 | Male Connector, 1/4" Tube To Male Pipe (.125" 25 Npt) | 3 | $5.66 | Add to Cart | |
| 4 | 3790447 | Plastic Tubing | 1 | $41.17 | Superseded by 3790446Add to Cart | |
| 5 | 75P10 | Solenoid, 12V | 1 | $318.24 | Add to Cart | |
| 6 | 379106 | Atmospheric Breather (.125" 27 Nptf) | 1 | $5.65 | Add to Cart | |
| 7 | 5003577 | Lock Washer | 2 | $1.07 | Add to Cart | |
| 8 | 5004576 | Round Head Slotted Screw (.438" X .190" 32 Unf- 2A) | 2 | $1.12 | Add to Cart | |
| 9 | 379258 | Bracket | 1 | $5.11 | Add to Cart | |
| 10 | 379043 | Male Elbow 90° 1/4" Tube To Pipe (.125" 27 Nptf) | 1 | $7.39 | Add to Cart | |
| 12 | 379257 | Connector | 1 | $2.91 | Add to Cart | |
| 17 | 75P9 | Wiring Harness (includes Items 13, 14, 15 & 16) | 1 | $516.43 | Add to Cart | |
| 13 | 379900 | Fuse, 10 Amp | 1 | $5.99 | Add to Cart | |
| 14 | 379336 | Switch Bracket | 1 | $10.11 | Add to Cart | |
| 15 | 378978 | Indicator Light, 12V | 1 | $25.82 | Add to Cart | |
| 16 | 75P11 | Switch P.t.o | 1 | — | Call for availability |
Input Options 522 Series 522**AM Input
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 9 | 21P658 | Mounting Plate | 1 | — | Call for availability | |
| 6 | 3P958 | Input Shaft, (12 Tooth 40mm Internal Spline) | 1 | — | Call for availability | |
| 7 | 561016 | Needle Roller Bearing | 1 | — | Call for availability | |
| 800018X | P.t.o. Mounting Kit. | 1 | — | Call for availability | ||
| 32895220X | Gasket And Caution Label Kit | 1 | — | Call for availability | ||
| S636 | Description | Quantity | — | Call for availability | ||
| 9 | 21P664 | Mounting Plate | 1 | — | Call for availability | |
| 6 | 3P967 | Input Shaft, (12 Tooth 40mm Internal Spline) | 1 | — | Call for availability |
Input Options 522 Series 522**AB Input
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 9 | 21P665 | Mounting Plate | 1 | — | Call for availability | |
| 6 | 3P958 | Input Shaft, (12 Tooth 40mm Internal Spline) | 1 | — | Call for availability | |
| 7 | 561016 | Needle Roller Bearing | 1 | — | Call for availability | |
| 800018X | P.t.o. Mounting Kit. | 1 | — | Call for availability | ||
| 32895220X | Gasket And Caution Label Kit | 1 | — | Call for availability | ||
| 9 | 21P668 | Mounting Plate | 1 | — | Call for availability | |
| 6 | 3P965 | Input Shaft, (14 Tooth 32mm External Spline) | 1 | — | Call for availability | |
| 7 | 550010 | Ball Bearing | 1 | $47.93 | Add to Cart | |
| 32895221X | Gasket And Caution Label Kit | 1 | — | Call for availability |
Input Options 522 Series 522**AE Input
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 2 | 21P658 | Mounting Plate ("ae" Input) | 1 | — | Call for availability | |
| 5 | 3P984 | Input Shaft (17 Tooth 37MM Spline) | 1 | — | Call for availability | |
| 8 | 561016 | Needle Roller Bearing | 1 | — | Call for availability | |
| 29 | 26P74 | Adapter Plate | 1 | — | Call for availability | |
| 800018X | P.t.o. Mounting Kit. | 1 | — | Call for availability | ||
| 32895220X | Gasket & Caution Label Kit | 1 | — | Call for availability | ||
| 800020X | Adapter Plate Mounting Kit | 1 | — | Call for availability | ||
| 35P98 | Gasket For Adapter Plate | 1 | — | Call for availability |
Output Options 522 Series
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 3P960 | 1 -1/4" Round Shaft | — | Call for availability | |||
| 3P961 | 1 -1/4" Round Shaft S.a.e. Taper | — | Call for availability |
T " "L
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| ZF6S850 | E No Shift Kit (europe) = | — | Call for availability |
Additional Parts Listed in This Manual
| Item | Part No. | Description | Qty | Notes | Price | |
|---|---|---|---|---|---|---|
| 500007-29 | Woodruff Key | $3.11 | Add to Cart | |||
| 501181 | Hex Lock Nut | — | No longer available — call for replacement | |||
| 379111 | Square Key | $23.18 | Add to Cart | |||
| 329090-1X | Valve Kit | — | Call for availability | |||
| 328388-46X | Inst Kit Parts Bag | $50.94 | Add to Cart | |||
| 328863X | Valve Air Control | 1 | $167.28 | Superseded by 329648XAdd to Cart | ||
| 379253 | Ring Connector | 1 | $3.11 | Add to Cart | ||
| 22-P-117 | Gasket Mounting | 1 | — | Call for availability | ||
| 379306 | Fork Connector | 4 | $2.50 | Add to Cart | ||
| 379904 | Push Connector | 1 | $7.13 | Add to Cart | ||
| 378881 | Rocker Switch | 1 | $111.97 | Add to Cart | ||
| 35-P-94 | Gasket Mounting | 1 | $6.88 | Add to Cart | ||
| 379252 | Butt Connector | 2 | $2.30 | Add to Cart | ||
| 379303-1 | Valve 12V | 1 | $334.31 | Add to Cart | ||
| 379254-3 | Wire, Green | 1 | $10.74 | Add to Cart | ||
| 35-P-97 | Gasket Mounting | 1 | — | Call for availability | ||
| 379005 | Lndicator | 1 | — | No longer available — call for replacement | ||
| 379303-2 | Valve 24V | 1 | $538.99 | Add to Cart | ||
| 328388-44X | Air Shift | 1 | $107.93 | Add to Cart | ||
| 379130 | Support Bracket | 2 | $3.48 | Add to Cart | ||
| 68-P-27 | Control Plate | 1 | $17.36 | Add to Cart | ||
| 328946X | Caution Label Kit | 1 | — | No longer available — call for replacement | ||
| 379085-1 | P.t.o. Instructions Decal | 1 | $4.15 | Add to Cart | ||
| 379281-1 | Gasket, Envelope | 1 | — | Call for availability | ||
| 79624 | Product Warranty Card | 1 | — | Call for availability | ||
| 500376-6 | Nut 10-24 | 4 | — | No longer available — call for replacement | ||
| 500448-9 | Screw Slot | 4 | $1.05 | Add to Cart | ||
| 379676-15 | Capscrew Socket Head M12 X 80 Lg (1. 75 Pitch) | 4 | $3.98 | Add to Cart | ||
| 379140-7 | M12 Lockwasher | 4 | $2.35 | Add to Cart | ||
| 379740-7 | Capscrew Socket Head M10 X 30 Lg (1.5 Pitch) | 9 | $3.11 | Add to Cart | ||
| 379140-8 | Lockwasher M10 | 7 | — | Call for availability |
This is the complete factory parts breakdown for the Chelsea PTO 522 — every part in the manual, matched to our live inventory. We stock 58 of the 122 parts above; click any part number to view it, or add it straight to your cart. Click a number on any diagram to jump to that part.
No parts match that search — try the part number with no dashes.
This Chelsea Illustrated Parts List covering the 522 PTO helps you identify the correct gear sets, shifter kits and service parts for your power take-off before you order.
| Models covered | 522 |
| PTO type | Chelsea 500 Series |
| Document | Illustrated Parts List (Chelsea) |
| Length | 17 pages |
| Format | PDF — free download |
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
Chelsea parts & units we stock
Pro Gear and Transmission stocks new, remanufactured and good-used parts for Chelsea PTO units:
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.
Browse all Chelsea PTO parts — rebuild kits, seal kits, gears & shift covers — or shop complete Chelsea PTO units.