When upgrading a tractor’s front PTO (Power Take-Off), choosing the right conversion kit is essential for reliable performance and compatibility. This guide highlights five front PTO conversion shaft kits that fit Ford, New Holland, and Massey Ferguson models, helping buyers select the best option for common OEM replacements, vintage tractors, or modernization projects. The featured products are suitable for owners performing agricultural work, restoration projects, or routine equipment maintenance. The following sections present a concise comparison to support the decision process.
| Product | Model Fit | Length | Key Advantage |
|---|---|---|---|
| Complete Tractor PTO Conversion Shaft for Ford/New Holland 2N/8N/9N | 2N, 8N, 9N, TO20, TO30 | Noted in listing | Classic compatibility for early Ford/New Holland tractors |
| Complete Tractor PTO Conversion Shaft for Ford/New Holland 600-900 | 600, 700, 800, 900 | Noted in listing | Versatile for mid-series tractors |
| Stevens Lake Parts PTO Conversion Shaft w/Gasket | Massey Ferguson 181173M1 | 30 7/8″ length | Includes housing, seals, and bearing components |
| PTO Output Shaft Conversion Kit for Ford/New Holland 701/741/740/501/630 | Various Ford/New Holland models | Noted in listing | OEM references for compatibility |
| Complete Tractor PTO Conversion Shaft for Ford/New Holland Golden Jubilee | NAA, NAA70038 family | 30 3/8″ | Specifically tailored for Golden Jubilee era tractors |
Note: This guide uses product features and fit notes to aid in choosing the right PTO conversion kit. For exact compatibility, verify your tractor’s model, year, and PTO specifications with the product listing and manufacturer references.
Complete Tractor PTO Conversion Shaft for Ford/New Holland 2N 8N 9N

Best for classic Ford/New Holland tractors, the 2N/8N/9N conversion shaft is positioned as an OEM replacement. It is designed to fit 2N, 8N, 9N families and is marketed as compatible with TO20 and TO30 models as well.
Who it’s best for: collectors or owners restoring early tractors who need a straightforward, OEM-style PTO shaft replacement. Why selected: aligns with vintage Ford tractors and keeps PTO output consistent with original configurations.
Caution: Verify the exact shaft length and spline count for your model, as listings may vary by application. This kit’s fit is most reliable when used on matching 2N/8N/9N variants.
Complete Tractor PTO Conversion Shaft for Ford/New Holland 600 700 800 900

This OEM-style replacement covers a broad range of forward-press tractors from 600 through 900 series and includes the necessary replacement components for a complete PTO shaft swap.
Best for: owners with mid-series Ford/New Holland tractors seeking a direct replacement. Why chosen: a compatible option for several models with a single shaft approach. Caution: Confirm that the length matches your specific model, as length can vary within compatible ranges.
Stevens Lake Parts PTO Conversion Shaft w/Gasket

Designed for Massey Ferguson 181173M1 applications, this kit includes a full set of components: the shaft itself plus a front PTO housing, a collar with set pin, snap ring, front PTO bearing, sleeve, and PTO seal. The shaft measures 30 7/8″ in length with a 1 3/8″ outside diameter and six splines, and supports conversion from 1 1/8″ to 1 3/8″.
Best for: Massey Ferguson operators needing a complete front PTO conversion with mounting hardware. Why chosen: comprehensive hardware kit reduces the need for additional parts. Limitation: geared toward MF models; check compatibility beyond the MF 181173M1 reference if you own a different MF sub-model.
PTO Output Shaft Conversion Kit for Ford/New Holland 701/741/740/501/630

Offers OEM-number references (Nca70038, Nca700-38) to guide fit across a range of Ford/New Holland models. The listing notes that some images may differ from the actual product, so buyers should verify exact fit before ordering.
Best for: buyers who want a versatile conversion kit that aligns with official OEM references. Why chosen: OEM cross-reference helps ensure compatibility with multiple classic models. Caution: Visual listings may vary from the actual product, so confirm the specific application details before purchase.
Complete Tractor PTO Conversion Shaft for Ford/New Holland Golden Jubilee

Targeted at Ford/New Holland Golden Jubilee models, this PTO conversion shaft matches NAA and related NAA70038 variants. The length is 30 3/8″ with a 1 1/3/8″ outside diameter and 6-spline count, designed to replace or upgrade the front PTO shaft on eligible Jubilee machines.
Best for: owners of Golden Jubilee tractors seeking a precise, era-specific replacement. Why chosen: dedicated fit for the Golden Jubilee line, minimizing compatibility concerns. Caution: Verify exact model and year alignment if you own a Jubilee variant outside the NAA family.
Buying Guide: Key Considerations for Front PTO Conversion Kits
What models and years should I target?
Front PTO conversion kits come in model-specific variants. Start by matching your tractor’s model family (e.g., 2N/8N/9N, 600/700/800/900, Golden Jubilee) and confirm year ranges to avoid misfits.
What lengths and diameters are typical?
Common shaft lengths range from roughly 30 to 31 inches, with outside diameters around 1 3/8 inches and six splines. Length and spline count determine compatibility with housing, bearings, and PTO shafts.
What components should be included?
Some kits are a bare shaft while others include housings, seals, bearings, a collar, and snap rings. A complete kit reduces the need to buy additional parts separately and speeds installation.
Are OEM references and part numbers important?
OEM number cross-references help ensure compatibility across related models. When a listing provides OEM or reference numbers, use them to verify fit with your tractor’s PTO system before purchase.
What are the practical pros and cons?
- Pros: Direct replacement options simplify maintenance, maintain original PTO alignment, and support reliable operation in agricultural tasks.
- Cons: Some listings note images may differ from actual products, and fit can vary within a model family. Always confirm against your exact year and variant.
How should I verify fit before ordering?
Check your tractor’s model, year, PTO shaft length, diameter, and number of splines. Compare these specs with the product listing and any included housing or seals. When in doubt, contact the seller with your machine’s exact PTO details.
What are common installation considerations?
Prepare the tractor for shaft replacement by safely lifting and supporting the front-end assembly. Ensure the new shaft aligns properly with the PTO housing and verify that seals and bearings are correctly seated to prevent leaks or misalignment.
FAQ
- Q: Will these kits fit all Ford/New Holland tractors?
- A: Fit depends on the specific model family and year. Use OEM references and model details in the listing to confirm compatibility.
- Q: Do these kits include the mounting hardware?
- A: Some listings include housing, seals, and fittings; others are shafts only. Check the product features for included parts.
- Q: Can I reuse existing PTO bearings?
- A: If bearings are in good condition, they may be reused, but many kits include bearings and seals to ensure a reliable seal and fit.
- Q: How do I determine the correct length?
- A: Measure the distance between PTO mounting points and refer to the product’s length specification. Choose a shaft length that matches the measurement to avoid binding or misalignment.
- Q: Are these suitable for restoration projects?
- A: Yes, several options target vintage or specific-era tractors, providing an authentic replacement path for restoration work.