Yukon YY F100606 Pinion Flange Yoke for Ford 10.25"/10.5" 31-Spline Long

Vehicle Fitment

• 1999-2007 Ford E-250 (Ford 10.25"/10.5" rear differential)
• 1999-2007 Ford E-350 / E-350 Super Duty (Ford 10.25"/10.5" rear differential)
• 2000-2007 Ford E-450 / E-450 Super Duty (Ford 10.5" rear differential)
• 2002-2003 Ford E-550 / E-550 Super Duty (Ford 10.5" rear differential)
• 2000-2005 Ford Excursion (Ford 10.5" rear differential)
• 2000-2010 Ford F-150 (Ford 10.25" rear differential, SRW)
• 1999 Ford F-250 (Ford 10.25" rear differential)
• 1999-2010 Ford F-250 Super Duty (Ford 10.5" rear differential, SRW)
• 1999-2010 Ford F-350 Super Duty (Ford 10.5" rear differential, SRW)

Fitment Notes

• Fits Ford 10.25" and 10.5" (Sterling) rear differentials with long spline pinion
• 31-spline pinion shaft
• Round companion flange style
• 8 x 4.75" bolt pattern
• Must physically confirm differential type -- factory options vary by vehicle
• Always replace pinion nut and crush sleeve when changing flange
• Sold individually (one flange yoke)

Features

• Direct OEM replacement round pinion companion flange
• Steel construction for durability
• Precision machined for proper balance and fitment
• Suitable for street, racing, and heavy-duty off-road use

Specifications

• Type: Pinion flange yoke (round companion flange)
• Differential: Ford 10.25" and 10.5" (Sterling)
• Spline Count: 31
• Spline Type: Long
• Bolt Pattern: 8 x 4.75"
• Material: Steel
• Sold as: Each
• UPC: 883584410430
• Warranty: 1 year against manufacturing defects

Included Components

• 1x Yukon pinion flange yoke

Product Description

The Yukon YY F100606 is a 31-spline round companion pinion flange yoke for Ford 10.25" and 10.5" (Sterling) rear differentials with a long spline pinion. This precision-machined steel flange is a direct replacement for the factory unit and is engineered for street, racing, and heavy-duty off-road applications. It fits a wide range of Ford trucks and vans from 1999-2010 equipped with the 10.25" or 10.5" rear axle, including the F-150, F-250/F-350 Super Duty, Excursion, and E-Series vans.

Always replace the pinion nut and crush sleeve when installing a new flange yoke. Physically confirm your differential type before ordering, as factory axle options vary by model year and configuration. Backed by Yukon's 1-year warranty against manufacturing defects.