differentials, this differential was utalized by Ford in the F-350 and F-450 starting in 1983; our inventory includes ring gear and pinion sets, including aftermarket and OE gear sets. You can purchase high quality ring and pinion sets in various ratios, high quality bearing rear end bearing overhaul kits including pinion bearings, pinion seal, crush sleeve, pinion nut, shims, ring gear bolts, marking compound and gasket.Ford 10.25" Ring and Pinion Rear End Parts
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Want to search for rear end parts by application, call 800-216-1632Having problems with Ford 10.25 and 10.5 inch rear end? We offer a complete line of rear end parts for the Ford 10.25 and 10.5 inch differentials 12 bolt, this differential was first introduced by Ford in the F-350 and F-450 starting in 1983; our inventory includes ring gear and pinion sets, including aftermarket and OE gear sets. You can purchase high quality ring and pinion sets in various ratios, high quality bearing rear end bearing overhaul kits including pinion bearings, pinion seal, crush sleeve, pinion nut, shims, ring gear bolts, marking compound and gasket. We also supply axles, carriers, cases, spider and side gears. Positraction units we offer include Lockrights by Powertrax, Auburn, Detroit Lockers, Trac Loc and ARB air lockers. Specifications are provided below to assist you in the identification and setup as well as torque spec's for your Ford 10.25 differential.
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Applications
What differential ratio do you have? Purchase your parts @ drivetrain.com and receive telephone access to experienced differential technician to assist you with installation, we help you solve the problem. |
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Its ease just call 800-216-1632 for free Technical Support, get it right the first time.|
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12-1/2"
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Ring Gear DIAMETER 10.25"
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12 1/2" X 20 RH THREADED BOLTS
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PINION DIAMETER 1.940" 31 SPLINE
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NO CASE BREAKS
8620 Material Heat-Treated
Assembly Specifications:
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Cover Bolt Ft. Lbs. 28
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Pinion Brg. Preload In. Lbs 16-29
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Pinion Brg. Preload In. Lbs 8-14 Used
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Ring Gear Backlash .008-.015
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Ring Gear Bolt to case Ft. Lbs. 100-120
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Side Brg. Caps Ft. Lbs. 70-85
Ford 10.25" Ring and Pinion Differential Component Products
Click part number to see more information or place order on line.
-DTSMW10.25IK_280x280.jpg)
--MWE7TZ4204C_280x280.jpg)
Ford 10.25 Sterling Ring Gear and Pinion 1983 to 1992
| Part Number | Tooth Count | Ratio | Price | |
| F10.25-308 | E5TZ4209A |
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3.08 |
$325.25 |
| F10.25-355 | E5TZ4209B |
39-11 |
3.55 |
$260.65 |
| F10.25-373* | E5TZ4209C |
41-11 |
3.73 |
$260.25 |
| F10.25-410* | E5TZ4209D |
41-10 |
4.10 |
$260.25 |
| F10.25-456* |
41.9 |
4.56 |
$260.25 | |
| DTSR10.25RMK BEARING KIT | 10.25" Late |
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$189.29 |
| DTSR10.25RMK BEARING KIT | 10.25" Sterling |
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$189.29 |
| * You must change yoke if 1994 or later model. Yoke E5TZ4851 (1330) series or E7TZ4851A (1350) series. 1994 and later can user F10.25L late ring and pinion series with no yoke change. |
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Ford 10.25 Ring Gear and Pinion 1993-up |
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| F10.25-355L |
39-11 |
3.55 |
$290.95 | |
| F10.25-373L | F81Z4209AA |
41-11 |
3.73 |
$290.95 |
| F10.25-410L | F81Z4209AB |
41-10 |
4.10 |
$290.95 |
| F10.25-4.56L |
41-9 |
4.56 |
$290.95 | |
| F10.25-489L |
44-9 |
4.89 |
$290.95 | |
| F10.25-513L |
41-8 |
5.13 |
$290.95 | |
| R10.25RMK BEARING KIT | $196.50 | |||
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Your gears run cooler and last longer!
Order above high performance synthetic oil and friction additive combo kit at time of order for ring and pinion or bearing overhaul kit and pay only $63.95 plus S&H, a $69.00 value. Quality guaranteed performance |
Installation Tool, Your cost $48.98 + S&H |
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Ford 10.5 Ring Gear and Pinion 1999-2002 |
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| F10.5-355 | 39-11 | $290.90 |
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| F10.5-373 | 41-11 | $290.90 | ||||||
| F10.5-4.10 | 41-10 | $290.90 | ||||||
| F10.5-4.56 | 41-9 | $290.90 | ||||||
| F10.5-4.89 | 41-8 | $290.90 | ||||||
| F10.5-5.13 | $290.90 | |||||||
| R10.5 RMK BEARING KIT | $279.89 | |||||||
Ford 10.25 Differential Parts
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Description |
Part Number |
Price |
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| Case (Empty) | MWE7TZ4204C |
$290.25 |
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| Internal Part Kit |
$166.67 |
This new Redline synthetic gear oil is recommended for replacement when replacing ring gear, pinion sets and or bearings, your cost only $9.95 qt. Red Line Oil |
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| Installation Kit (no bearings) |
$75.33 |
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| Axle, 86-97 F-250 semi-float right side |
$168.33 |
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| Axle, 86-97 F-250 semi-float left side |
$168.33 |
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| Track Lock Disc Kit 28 teeth |
$89.99 |
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| Track Lock Disc Kit 10.5" 26 teeth |
$174.99 |
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| Ring Gear Bolt Kit |
$17.77 |
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| Pinion Nut |
4.94 |
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| Cross Shaft |
$27.50 |
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| Coller Crush Sleeve |
$7.88 |
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| Seal, Pinion Yoke |
$12.96 |
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| Differential Cover F250, F350, E250, E350, 1986 to present single rear wheel. Increase the fluid capacity, you will find that the fluid will run 15 to 20 degrees cooler. 3 quarts to 5 quarts, 3.5" overall height.   |
$265.00 |
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| Installation Kits include: Pinion nut, Pinion seal, crush sleeve, pinion shims, carrier shims, ring gear bolts, locking compound, brush & gasket. Overhaul kit includes: all of the above plus pinion bearings, races, carrier bearings and races. Internal Part Kit includes spider/side gears, thrust washers & cross-shaft) | |||
Ford 10.25 Differential Positractions |
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| Description |
Part Number |
Price |
| ARB Air Locker * |
$1204.59 |
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| Auburn Limited Slip |
$564.10 |
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| Trac Loc Positraction |
$475.95 |
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| Detroit Locker |
$665.51 |
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| LockRight Solid Positraction 35 splines |
$387.28 |
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| No-Slip Positraction 10.5" 35 spline open differential 3 pinion |
$509.05 |
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| No-Slip Positraction 10.5" 35 spline Trac-Loc differential 3 pinion |
$536.64 |
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| * Air compressor | CKMA12 | $309.38 |