Product Details: Differential ring and pinion High pinion 5.38 gear ratio 9.75" ring gear diameter Thin Requires 4.56 and up carrier Uses a crush sleeve or solid spacer (crush sleeve eliminator) Parts Included: (1) ring and pinion (1) pinion inner pinion bearing (1) pinion outer pinion bearing (1) pinion seal (1) pinion nut (1) pinion washer (1) pinion crush washer (1) pinion depth shim kit (1) carrier bearing shim kit (1) pinion baffle (1) pinion slinger (12) ring gear bolts Fits: Ultimate Dana 60 front axle 1978 - 2018 Ford F-250 and F-350 with the Dana 60 front axle 1985 - 1997 Ford F-350 with the Dana 60 front axle 1999 - 2004 Ford Super Duty F-250 and F-350 with the Dana 60 front axle 2005 - 2016 Ford Super Duty F-250, F-350, F-450, and F-550 with the Dana Super 60 front axle Brand: Dana Spicer Part Number: Dana Spicer 708123-5 Warranty: 6 month warranty and case by case basis. Axle Model: DANA 60 Axle Type: Semi Floating And Full Floating Brand: Spicer Carrier Breaks: 4.10 / 4.56 Cover Bolt Quantity: 10 Gear Ratio: 5.38 Include Installation Kit: Y New Or Remanufactured: New On Vehicle Location: FRONT Pinion Gear Included: Y Pinion Gear Tooth Quantity: 8 Pinion Shaft Diameter: 1.625" Pinion Spline Count: 29 Ring Gear Bolt Qty: 12 Ring Gear Bolt Thread In.: 1/2"-20 Ring Gear Diameter (In.): 9.75" Ring Gear Included: Y Ring Gear Rotation: REVERSE Ring Teeth Count: 43