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Filthy Motorsports: Store > Ford 10.25" / 10.5"
Choose a sub category:
Ford 10.25" Ring and Pinion Gears Ford 10.5" 31-Spline Ring and Pinion Gears
Ford 10.5" 37-Spline Ring and Pinion Gears
Ford 10.25" / Ford 10.5" (Sterling / Visteon) Axle Parts, Gears, and Upgrades

Axle Specifications:
Ring Gear Diameter: 10.250 / 10.500
Diff Cover Bolts: 12
Ring Gear Bolts: 12
Axle Spline Count: 35
Axle Shaft Style: Full & Semi-Float
C-Clips: No
Pinion Support: No
Pinion Nut: 1-1/8"
Pinion Crush Sleeve: Yes
Carrier Breaks: No
Dropout Carrier: No
Max Output Torque: 8,300 / 10,660 ft-lbs
Max Cont. Torque: 2,000 / 2,900 ft-lbs

Torque Specifications:
Pinion Preload New: 20 to 35 in-lbs
Pinion Preload Reused: 6 to 8 in-lbs
Ring Gear Backlash: .006" to .010"
Ring Gear Bolt Torque: 95 ft-lbs
Carrier Bearing Caps: 80 ft-lbs

Gear Oil:
OEM Gear Oil: Motorcraft 75W-140
Recommended: Mobil 1 75W-140
Oil Capacity: 3.5 qt. / Fill to Plug

Popular Applications:
Ford F-250 / Super Duty 1985 + Rear
Ford F-350 / Super Duty 1985 - 2016 Rear
Ford Excursion 2000 - 2005 Rear
Ford E250/E350 Vans 1985 - 2015 Rear

Axle Images:

Changes By Year:
1983-1992 10.25" Short 31 Spline Pinion (1-1/4")
1993-1998 10.25" Long 31 Spline Pinion (1-5/8")
1999-2007 10.50" Long 31 Spline Pinion
2008-2010 Same as '99-'06 w/ Different Bearings
2011+ 10.50 w/ 37 Spline Pinion

Pinion Bearing Changes By Year:
1983-1997 Inner: HM807010 / HM807044
1998-2007 Inner: NP949481 / NP504493
2008-2010 Inner: NP998236 / NP761271
2011+ Inner:
Outer: 		Koyo 106102
M802047 / M802011

**To install Ford 10.25" gears in a 1998-2007 Ford 10.5" housing, use inner pinion bearing and race HM807010 / HM807044. A Long Spline Pinion Yoke will also be required. For 2008-2010 axle housings, a pinion bearing spacer is also required.

Axle Details
The Ford 10.25" and Ford 10.5" axles, also known as Visteon and Sterling axles because they are manufactured by Visteon at the Sterling Axle Plant in Michigan, are exclusive to Ford and were first introduced in 1985. The two axles are almost identical using the same differential today as they did in 1985. There were slight variations to the ring and pinion gears and bearings over the years but many components remained interchangeable with the original 10.25" gears fitting axles up through 2010 with matching bearings. In 2011 Ford updated the ring and pinion gears to feature a 37 spline pinion and yoke and changed the bearings so 2011 and newer axles require 2011+ gears and install kits. All 10.25" and 10.5" axles use use large 35 spline axle shafts, however, some versions of the Ford 10.25" came with semi-floating axle shafts while all Ford 10.5" axles are full-floating.

Selecting the Correct Combination of Parts:
Axle Year and Model Compatible Gears Master Install Kit
83-92 Ford 10.25" Ford 10.25" Gears and Long Spline Pinion Yoke YK F10.25
93-98 Ford 10.25" Ford 10.25" Gears YK F10.25
99-07 Ford 10.5" Ford 10.5" 31-Spline Gears YK F10.5-A
99-07 Ford 10.5" Ford 10.25" Gears w/ 10.25" Install Kit YK F10.25 (Required)
08-10 Ford 10.5" Ford 10.5" 31-Spline Gears w/ Install Kit YK F10.5-C (Required)
08-10 Ford 10.5" Ford 10.25" Gears w/ 10.25" Install Kit YK F10.5-B (Required)
11+ Ford 10.5" Ford 10.5" 37-Spline Gears YK F10.5-D
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OX Locker images
Ford 10.25" & 10.5" OX Locker | 35 Spline
Price: $1,092.00

OX Lockers have a unique cable shifted locking mechanism that makes them extremely tough, durable, reliable, and easy to use. A heavy duty differential cover is included and the mechanical or air operated shifters (sold separately) make for an easy installation in any vehicle. more info
Eaton Detroit TrueTrac
Ford Sterling 10.25" & 10.5" Eaton TrueTrac | 35 Spline
Price $807.99

Detroit Truetrac Lockers are maintenance free, fully mechanical, Torsen style limited slip differentials with helical gears instead of clutch packs (which wear out over time) to provide constant torque to both wheels while still allowing for smooth turns on pavement. more info
Detroit Locker
Ford Sterling 10.25" & 10.5" Detroit Locker | 35 Spline
Price $929.99

Detroit Lockers have a legendary reputation with off-roaders and feature a heavy duty, efficient, and effective design that offers 100% traction to both wheels while still allowing for wheel speed differentiation for easy turning on the street and other high-traction surfaces. more info
Yukon Master Ring and Pinion Install Kit
Ford Sterling Yukon Master Overhaul Kit | 10.5" ('11 and Newer)
List Price: $755.89

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up. more info
Yukon Master Ring and Pinion Install Kit
Ford Sterling Yukon Master Overhaul Kit | 10.5" ('08 to '10)
List Price: $698.89

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up. more info
Yukon Master Ring and Pinion Install Kit
Ford Sterling Yukon Master Overhaul Kit | 10.5" w/ 10.25" Gears ('08 to '10)
List Price: $688.89

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up. more info
Yukon Master Ring and Pinion Install Kit
Ford Sterling Yukon Master Overhaul Kit | 10.5" ('99 to '07)
List Price: $599.89

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up. more info
Yukon Master Ring and Pinion Install Kit
Ford Sterling Yukon Master Overhaul Kit | 10.25" Gears ('85 to '07)
List Price: $519.89

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up. more info
Yukon Minor Ring and Pinion Install Kit
Ford Sterling Yukon Minor Overhaul Kit | 10.25" & 10.5" ('85 to '07)
List Price: $148.89

Yukon minor overhaul kits include all of the seals, shims, and small parts you need to install new ring and pinion gears or add a differential locker (using the existing bearings). Every part is of the highest quality and made specifically for each axle application. more info
Yukon Gear and Axle Ring and Pinion Sets
Ford Sterling Yukon Ring and Pinion Gears | 10.5" 37-Spline | 3.55
List Price: $724.89

Yukon ring and pinion gears are built for heavy duty applications like racing, towing, and rock crawling. They're machined from the finest materials using modern gear grinding technology to give each set superior strength and the smoothest and most precise finish. more info
   
 


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