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Ford 10.25" Ring and Pinion Differential Component Parts Print E-mail

gears_regular.jpgFord 10.25" Ring and Pinion Rear End Parts

We offer quality rear end parts and access to applications information that identifies available ring and pinion ratios for your Ford differential.  Information is provided to assist you in identification of the differential that you have.  Also free information to assist you with  ring and pinion installation is provided alone with specifications and carrier/case breaks when you are considering gear ratio changes. You can review applications available to assist you with selection of the specific positraction unit that you may need to improve your performance.

 gear_guy.jpgWant to search for rear end parts by application, ask the Gear Wizzard

Having 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 interduced 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.

Locate the parts you need below:    
Sterling Ring Gear and Pinion 1983-1992   Differential Parts
(Late) Ring Gear and Pinion 1993-up   Differential Positractions
Ring Gear and Pinion 1999-2002   Differential Assemblie

Applications

Model

Year

  Model

Year

F-350

83-03

  F-450

83-02

         

 

 

MG Part #

OEM #

Ratio

F10.25-308

E5TZ4209A

3.08

F10.25-355

E5TZ4209A

3.55

F10.25-373

E5TZ4209A

3.73

F10.25-410

E5TZ4209A

4.10

F10.25-456

E5TZ4209A

4.56

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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Specifications

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12-1/2"

12 HOLES
Irregular Gasket Pattern

  • Ring Gear DIAMETER 10.25"
  • 12 1/2" X 20 RH THREADED BOLTS
  • PINION DIAMETER 1.940" 31 SPLINE
  • NO CASE BREAKS

    8620 Material Heat-Treated

    Assembly Specifications:

  • Cover Bolt Ft. Lbs. 28
  • Pinion Brg. Preload In. Lbs 16-29
  • Pinion Brg. Preload In. Lbs 8-14 Used
  • Ring Gear Backlash .008-.015
  • Ring Gear Bolt to case Ft. Lbs. 100-120
  • Side Brg. Caps Ft. Lbs. 70-85

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Ford 10.25 Sterling Ring Gear and Pinion 1983 to 1992

Part Number   Tooth Count Ratio Price
F10.25-308 E5TZ4209A

 

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

 

 

$189.29
DTSR10.25RMK BEARING KIT 10.25" Sterling

 

 

$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.

 

 

Ford 10.25 Ring Gear and Pinion 1993-up

 
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

Your gears run cooler and last longer!

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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

     

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Installation Tool, Your cost $48.98 + S&H

 

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Ford 10.5 Ring Gear and Pinion 1999-2002

     
F10.5-355   39-11   $290.90  

Specifications

ford10.25cover_small.jpg

12-1/8"x 13 5/16"

14 HOLES
IRREGULAR Gasket Pattern

 

  • Ring Gear DIAMETER 10.5"
  • 12 1/2" X 20 RH THREADED BOLTS
  • PINION DIAMETER 1.910" 31 SPLINE
  • NO CASE BREAKS

    8620 Material Heat-Treated

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  

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Ford 10.25 Differential Parts

 

     

Description

Part Number

Price

 
Case (Empty) MWE7TZ4204C

$290.25

 
Internal Part Kit

DTSMW10.25BK

$166.67

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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

Installation Kit (no bearings)

DTSMW10.25IK

$75.33

Axle, 86-97 F-250 semi-float right side

PA5807B

$168.33

Axle, 86-97 F-250 semi-float left side

PA5807C

$168.33

Track Lock Disc Kit 28 teeth

DTS72960X

$89.99

Track Lock Disc Kit 10.5" 26 teeth

DTSF105201

$174.99

Ring Gear Bolt Kit

USE5TZ4216A/12

$17.77

Pinion Nut

390313-S100

4.94

Cross Shaft

E5TZ-4211-A

$27.50

 
Coller Crush Sleeve

B7A4662A

$7.88

Seal, Pinion Yoke

NAT4278

$12.96

 
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.

ford10.25coverback_1large.jpgford10.25back_large.jpg

DTSFord-12-Bolt 10.25

$265.00

 
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)

 

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Ford 10.25 Differential Assemblies

 

Drum to Drum - Disk to Disk

Description

Part Number

Cost

Rear Ford 10.5, 3.73 ratio open carrier disc brakes

SIXFD105-373

$1099.98

 

 

 

These units are new take out differentials with typically very low mileage!

Ford 10.25 Differential Positractions

   
Description

Part Number

Price

ARB Air Locker *

RD37

$1204.59

Auburn Limited Slip

542089

$644.95

Trac Loc Positraction

MW73109X

$475.95

Detroit Locker

225SL-56A

$665.51

LockRight Solid Positraction 35 splines

1840

$387.28

No-Slip Positraction 10.5" 35 spline open differential 3 pinion

92-0605-3500

$509.05

No-Slip Positraction 10.5" 35 spline Trac-Loc differential 3 pinion

92-0605-3520

$536.64

* Air compressor
 CKMA12  $309.38

 
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