AD-6-6A Male to Female Adaptor 6 Inner Splines 1 3/8" 6 Outer Splines 1 3/4" PTO
Technical Data
The AD-6-6A Male to Female PTO Adaptor is a must-have for farmers, ranchers, and heavy equipment operators who need to convert a 1-3/8" 6-spline input to a 1-3/4" 6-spline output.
Crafted from heavy-duty steel and built to exact tolerances, this adaptor ensures a secure connection, smooth operation, and long-lasting reliability in the most demanding agricultural and industrial applications.
Whether you’re powering up a tractor, operating PTO-driven equipment, or running farm machinery, the AD-6-6A adaptor offers the strength, durability, and corrosion resistance needed to keep your equipment running smoothly.
Upgrade Your PTO Setup with Confidence
With the AD-6-6A Male to Female PTO Adaptor, you can connect mismatched splines quickly and securely. Built tough for farm life, it keeps your equipment working harder, longer.
Features and Benefits
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Spline Conversion – Converts 1-3/8" inner 6-spline to 1-3/4" outer 6-spline for versatile compatibility.
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Heavy-Duty Steel Construction – Built to withstand high torque and demanding farm applications.
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Precision-Machined Splines – Ensures smooth operation and reduces premature wear.
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Rust & Corrosion Resistant – Coated finish adds protection against harsh outdoor conditions.
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Quick & Secure Fit – Allows fast installation into existing PTO systems.
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Extended Equipment Life – Minimizes wear and damage to driveline components.
Technical Specifications
| Specification | Details |
|---|---|
| Part Type | PTO Adaptor |
| MPN | AD-6-6A |
| Brand | Aftermarket |
| Inner Splines | 6 |
| Inner Spline Diameter (D) | 1.375 in (34.9 mm) |
| Outer Splines | 6 |
| Outer Spline Diameter (D1) | 1.75 in (44.4 mm) |
| Length (L) | 6.8 in (144 mm) |
| Compatible Equipment Type | Agricultural, Tractor, PTO-driven Equipment |
| Condition | New (sealed packaging) |
| Warranty | 1 Year |
Vehicle & Equipment Compatibility
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Tractors (various makes and models with PTO systems)
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PTO-Driven Equipment
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Agricultural Machinery
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Industrial Applications requiring spline conversion
What’s Included
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1 × AD-6-6A Male to Female PTO Adaptor
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Original manufacturer packaging
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1-Year Warranty
REVIEWS
Solid adaptor! Works perfectly on my tractor’s PTO when switching implements. Easy install and feels super durable.
Daniel W.
Fargo, ND
Needed this adaptor for my baler setup. Fit like a glove, no wobble, and it’s been holding up under daily use.
Kevin R.
Des Moines, IA
Specifications
Fitment Data
• Engineered for precision compatibility with high-performance builds.
• Tested under extreme mechanical stress for guaranteed structural integrity.
Use the Riot Vehicle Finder to verify exact sub-model compatibility.
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