Ford 8.8 Rear Differential 4 Bolt Round Pinion Flange Mustang F150 American Axle 40047860 Pinion Flange FORD 9.75 INCH > PINION FLANGE BOLTS Spicer 350 4 31 1X: Half Round Yoke 3 2 1579 Drive Shaft Flange Yoke Ford F150 1997 2004 1350 Series. Yukon flange yoke for Ford 9. 75 inch. All Yukon yokes come with a one year warranty against manufacturing defects. Yukon Gear and Axle manufactures a complete line of general replacement and performance series of pinion yokes for many street, racing, and heavy duty off road applications. Features: Fits Ford 9. 75 inch 31 spline Details: AAP Selling Package Quantity UOM: EA Aap uda 12: EA Aap uda 22: 1 Material: Steel Spline Quantity: 31 Fitment Notes: Ford 9. 75 inch. Rear Pinion Yoke Companion Flange 31 Spline 4. 25 inch Bolt Circle, Ford Super 8. 8 inch. Rear Pinion Yoke Companion Flange 31 Spline 4. 25 inch Bolt Circle