AD-8-6A Adapter 8 Inner Splines 1.5" 6 Outer Splines 1.75" for PTO Agricultural
AD-8-6A Adapter 8 Inner Splines 1.5" 6 Outer Splines 1.75" for PTO Agricultural
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AD-8-6A Adapter 8 Inner Splines 1.5" 6 Outer Splines 1.75" for PTO Agricultural

Aftermarket
AD-8-6A
In stock
$46.95
The AD-8-6A Male to Female PTO Adapter is designed for heavy-duty farming and industrial applications where...
$46.95

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AD-8-6A Adapter 8 Inner Splines 1.5" 6 Outer Splines 1.75" for PTO Agricultural

The AD-8-6A Male to Female PTO Adapter is designed for heavy-duty farming and industrial applications where equipment requires conversion from an 8-spline 1-1/2" input to a 6-spline 1-3/4" output.

Manufactured from durable, high-strength steel, this adaptor is precision-machined to guarantee a secure fit, smooth performance, and reduced wear on your equipment. Its corrosion-resistant finish ensures long-lasting protection in demanding agricultural environments.

Perfect for tractors, PTO-driven machinery, and agricultural equipment, the AD-8-6A provides the strength and versatility you need to keep your farm operations running efficiently.

Convert With Confidence
The AD-8-6A PTO Adapter makes it easy to connect mismatched spline sizes. Engineered tough for farming and industrial use, it ensures smooth power transfer and extended equipment life.

Features and Benefits

  • Spline Conversion – Converts 1-1/2" 8-spline input to 1-3/4" 6-spline output.

  • Heavy-Duty Steel Build – Withstands high torque and continuous farm use.

  • Precision-Machined Splines – Ensures smooth connection and reduces PTO wear.

  • Corrosion Protection – Coated finish resists rust and outdoor damage.

  • Quick & Secure Installation – Easily attaches to existing PTO setups.

  • Extended Machinery Life – Protects driveline by ensuring correct fit.

Technical Specifications

Specification Details
Part Type PTO Adapter
MPN AD-8-6A
Brand Aftermarket
Inner Splines 8
Inner Spline Diameter (D) 1.5 in (38 mm)
Outer Splines 6
Outer Spline Diameter (D1) 1.75 in (44.4 mm)
Length (L) 6.8 in (173 mm)
Compatible Equipment Type PTO, Agricultural, Tractor
Condition New (factory sealed)
Warranty 1 Year

 

Vehicle & Equipment Compatibility

  • Tractors (various makes with PTO systems)

  • PTO-Driven Implements

  • Agricultural Machinery

  • Industrial Applications requiring spline conversion

What’s Included

  • 1 × AD-8-6A Male to Female PTO Adapter

  • Original packaging

  • 1-Year Warranty

REVIEWS

JM

Great adaptor! Used it on my tractor to run an older mower. Fit perfectly and no issues so far even under heavy load.

John M.

Billings, MT

★★★★★
LS

Exactly what I needed to connect my PTO-driven auger. Sturdy build, no vibration, and feels like it’ll last a long time.

Lisa S.

Tulsa, OK

★★★★★
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Effective Date: October 2024
We offer a 30-day return policy, allowing you to request a return within 30 days of receiving your item. To qualify for a return, the item must be in its original condition—unused, with tags, and in its original packaging. A receipt or proof of purchase is also required.

To initiate a return, please contact us at info@riotparts.com. Returns must be shipped to the address provided upon request. If your return is approved, we will issue a return shipping label along with detailed instructions.

Important
Returns sent without prior authorization will not be accepted.

For any return-related inquiries, please reach out to us at info@riotparts.com.

Return Shipping Address
The return shipping address will be determined based on the requestor’s location to ensure the nearest return facility is used.

Possible return locations include:
10880 Lear Blvd.
Reno, NV 89506, United States
931 W. Bardin Rd., Suite 150–200
Arlington, TX 76017, United States
3035 Campus Dr.
Hatfield, PA 19440, United States
5789 N. Graham Road, Ste 200
Whiteland, IN 46184, United States
2020 NE Aloclek Dr 4711 N Lamon Ave
#118 STE 12, Hillsboro, OR 97124, United States

Damages and Issues
We recommend inspecting your order upon receipt. If you find that an item is defective, damaged, or if you received the wrong item, please contact us immediately so we can address the issue.

Exceptions / Non-Returnable Items
Certain items cannot be returned, including:
• Electrical parts that have been installed or used
• Special order parts that were custom ordered for you
• Items that have been damaged due to improper installation or use

If you have questions or concerns about a specific item, please contact us for assistance.

Exchanges
For exchanges, the quickest option is to return the item you have. Once the return is accepted, you can make a separate purchase for the new item.

Refunds
We will notify you once we receive and inspect your return to inform you whether your refund is approved. If approved, you will be automatically refunded using your original payment method within 10 business days. Please be aware that it may take additional time for your bank or credit card company to process and post the refund.

If more than 15 business days have passed since your return was approved and you haven’t received your refund, please contact us at info@riotparts.com.

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