New Genuine S&S End Yoke Newstar P/N S-8631.Alternative and other replacement reference part numbers: Dana Spicer 10-4-123, 10 4 123, 104123, Rockwell Meritor 10N-4-123, 10N4123, 10N 4 123, Neapco 10-4123, 104123.Description: 1000 Series PTO End Yoke. Keyway: 5/16" or 0.312 in. Tubing Diameter and Wall: 1-1/4" - ROUND.Please We can also combine orders to save on shipping.If you need any parts not found on our store let us know, we may have the part in store and we don't mind making an page for it. We're a dealer of Newstar and S&S products, please let us know if there is any other parts you might need, thanks.