1in. Coupler x 1-3/8 In. x 6 spline


$55.99 EA

Use this spline coupling adapter for a variety of different pumps. This 6 spline shaft had a 1/4 in. keyway and is detachable to the 1 in. round bore coupling. The spring lock attachment rather makes this PTO adapter simple to use.

Availability: In Stock -

This splined adapter can be used for a wide range of pumps. There are 6 splines and dimensions of the spline shaft coupling measures 1-3/8 in. x 6 in., with a 1/4 in. keyway inside of the shaft. The coupler has a 1 in. bore and measures 4-1/8 in. L. Connected to the spline adapter, howver the adapter can be detachable due to the spring lock that keeps the parts attached, but can easily become unattached.

  • Detach spline adaptor: 1-3/8 in. x 6 in.
  • Length: 4-1/8 in.
  • Keyway: 1/4 in.
  • Round bore: 1 in.
  • 6 spline
  • Spring lock attachment
Browse our selction of PTO Adapters offered here at Agri Supply®


Shipping Information

Your order is important to us and we will strive to process it as quickly as possible. Most in-stock items are shipped within 2-4 business days and typically deliver in 5-7 business days. In-stock items may ship from multiple locations and can arrive on separate days. Heavy or bulky items will ship via Freight/Truck Service and will take 8-10 business days for delivery. For those immediate product needs, we do offer at an additional cost, express service from UPS and Motor freight.

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Return Information

Your satisfaction is our priority. If for any reason you are not satisfied with a purchase from Agri Supply, we will gladly refund your money, or exchange the item, or fix it should it break. A minimum one-year warranty applies to all non-perishable items, parts and service from Agri Supply. And, all hand tools sold by Agri Supply have a lifetime warranty, regardless of the length of the manufacturer's warranty. See our Agri Supply Guarantee for more details.

To return an item... give us a call at 1-800-345-0169, or visit one of our 8 retail stores near you, and one of our friendly customer service representatives, or store employees, will be glad to assist you.

If you have any questions please contact our Customer Service representatives at 1-800-345-0169

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The above shipping chart applies to UPS ground shipments to the 48 contiguous states only. Please call 1-800-345-0169 for timing on shipments to Alaska, Hawaii, and Puerto Rico, thank you!

Review Summary (Based on 1 Reviews)


Customer Reviews

5 Stars Perfect Replacement!


Eugene in Michigan from MI wrote (July 23, 2014):

This was a perfect replacement for the worn-out coupler on the pump of my PTO log splitter. You might need a bit of fine emery paper to remove the paint on the inside of the shaft bore and/or a small file to debur/widen the keyway, but otherwise it was a easy install. My old coupler used a thumb screw to secure it to the PTO shaft, so the spring-loaded lock on this one will make life easier. This appears to be a well-made item that will give me years of good service.