310088F
PTO shaft cap, short for Ford 9N, 2N, 8N, NAA and 10 more
310088F → 310088F ✓1 (current manufacturer number; may not look like the original) Also found as 155022 , AS155022AP
Original part (OEM)
No longer available
PorkForge replacement
Not made yet
Part facts
- Original part number
- 310088F✓1
- Manufacturer
- Ford
- Part type
- Caps, plugs and grommets
- System
- PTO
- Notes
- Short cap that covers the rear PTO output shaft when nothing is being driven. It fits Ford N-series, NAA, the Hundred series and the 1965-75 utility tractors. A New Holland dealer lists 310088F as no longer available, with no successor number. All States sells an aftermarket cap new and used for about $7 to $11. It guards a rotating shaft, so PorkForge keeps it as a reference and demand record only.
- Last reviewed
- Oct 27, 2026 · record pf-fd-0001
Dimensions How to measure this part
Fits these machines
| Model | Years | Notes | Evidence |
|---|---|---|---|
| Ford 9N | 1939–1952 | Dealer catalog application list; the dealer says it does not guarantee fitment. | Verified 1 |
| Ford 2N | 1939–1952 | Dealer catalog application list; the dealer says it does not guarantee fitment. | Verified 1 |
| Ford 8N | 1939–1952 | Dealer catalog application list; the dealer says it does not guarantee fitment. | Verified 1 |
| Ford NAA | Not recorded | Jubilee; Aftermarket seller's fitment list. | Reported 2 |
| Ford 600 | Not recorded | Aftermarket seller's fitment list. | Reported 2 |
| Ford 700 | Not recorded | Aftermarket seller's fitment list. | Reported 2 |
| Ford 800 | Not recorded | Aftermarket seller's fitment list. | Reported 2 |
| Ford 900 | Not recorded | Aftermarket seller's fitment list. | Reported 2 |
| Ford 601-901 | Not recorded | Aftermarket seller's fitment list. | Reported 2 |
| Ford 2000 series | Not recorded | Dealer catalog application list; the dealer says it does not guarantee fitment. | Verified 1 |
| Ford 3000 series | Not recorded | Dealer catalog application list; the dealer says it does not guarantee fitment. | Verified 1 |
| Ford 4000 series | Not recorded | Dealer catalog application list; the dealer says it does not guarantee fitment. | Verified 1 |
| Ford 2600 series | Not recorded | Dealer catalog application list; the dealer says it does not guarantee fitment. | Verified 1 |
| Ford 3600 series | Not recorded | Dealer catalog application list; the dealer says it does not guarantee fitment. | Verified 1 |
Where to find one today
Why it is hard to get
- No longer available: New Holland dealer page says the part is no longer available and lists no replacement number. 1
Can this part be made again?
Not eligiblePhysical replacement
It covers the exposed PTO stub, so it acts as a guard. PTO parts and guards are safety-critical under brief section 11. Kept for reference and demand tracking only.
Not eligibleSTL / FreeCAD file
We will not offer files for this part.
Sources
- New Holland Cap Cover Part # 310088F - New Holland Rochester
- PTO Cap - Short, item 155022 - All States Ag Parts
Not affiliated with or endorsed by Ford or its successors. The name is used only to identify compatibility. Part numbers are shown for reference. Check fit against your own machine. Spot a mistake?
Verification checklist (7 of 8 met)
- ✓ OEM part number verified from a cited source
- ✓ Cited by two websites, or by an OEM or dealer source
- ✓ At least one compatible model with a source
- ✓ 4 kinds of fact beyond the name (supersessions, cross-references, original availability, aftermarket prices); 3 needed
- ✓ Original availability checked 2026-10-27
- ✓ Text and title are distinct
- ✓ No editorial hold
- ✕ Not yet reviewed and signed off for search
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