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Home
Eaton
Yukon Gear & Axle
On Sale
Drivetrain & Differential

31 Splines Eaton/Yukon Gear & Axle Drivetrain & Differential

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Axle Spline
31 Splines
Brand
Eaton
Yukon Gear & Axle

Brand

Alloy USA (5)
ARB 4x4 Accessories (8)
Auburn Gear (2)
Dana Spicer (7)
Motive Gear (4)
Power Trax (14)
Ten Factory (12)
USA Standard Gear (1)

Fitment

Universal Fit (21)

Axle Location

Front or Rear (1)
Rear (15)

Axle Shaft Location

Driver Side (2)
Passenger Side (1)

Axle Spline

10 Splines (1)
15 Splines (5)
16 Splines (2)
17 Splines (3)
18 Splines (1)
19 Splines (1)
23 Splines (1)
24 Splines (5)
25 Splines (1)
26 Splines (4)
View More
27 Splines (37)
28 Splines (33)
29 Splines (13)
30 Splines (122)
32 Splines (23)
33 Splines (8)
34 Splines (8)
35 Splines (56)
36 Splines (2)
37 Splines (5)
38 Splines (1)
40 Splines (4)

Axle Type

Chrysler 9.25 Inches (5)
Ford 8.8 Inches (7)
Ford 9 Inches (8)
Nissan (1)

Differential Type

Automatic Locker (5)
Limited Slip Assembly (7)
Selectable Locker (1)

Open Or Limited Slip Case

Open (2)

Popular Axle Manufacture

Chrysler (4)
Ford (11)
Other (1)

Part Type

Differential (12)
Differential Rebuild Kit (1)
Differentials (1)
Replacement Axle Shafts (3)
Spider Gear (4)

Price Range

$200 to $299 (1)
$300 to $399 (5)
$400 to $499 (2)
$500 to $749 (4)
$750 to $999 (7)
Over $1000 (2)

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31 Splines Eaton/Yukon Gear & Axle On Sale

7 Product Groups

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Eaton E-Locker Differentials

Eaton E-Locker

From $1,419.99

Electronically-selectable differential for on-demand traction
Provides 100% axle lock on demand via on/off switch
Switch is dash-mountable making it easier to reach
Most reliable on-demand differential on the market
Allows user to send all available torque to drive wheels
Provides maximum traction to tackle the most challenging terrain
Beefy, forged gears for added strength and reliability
Works in both forward and reverse
Time-tested performance and durability
New wiring harness designed for straightforward installation
Minimal wiring provides a clean, snag-free installation
California Residents: WARNING

From $1,419.99

4.0 4.0 (104)

Eaton Posi Lmited-Slip Differentials

Eaton Eaton Posi Differential

From $699.99

For use with 17 spline axles
Designed to work with the following ratios: 3.08 to 3.90 and 4.11 to 4.56
Replaceable carbon fiber clutches
Net-forged spider and side gears
Fully rebuildable
California Residents: WARNING

From $699.99

5.0 5.0 (9)

Eaton Detroit Truetrac Differentials

Eaton Detroit Truetrac

From $683.99

Eaton Detroit Locker Differentials

Eaton Detroit Locker Differential

From $1,069.99

4.7 4.7 (1131)

Yukon Gear & Axle Replacement Axle Shafts

From $323.89

5.0 5.0 (1)

Yukon Gear & Axle Dura Grip Positraction Differentials

From $820.89

Yukon Gear & Axle Spider Gear Kits

Yukon Gear & Axle Spider Gear Kit

From $283.89

21 Products

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Part Number: YKGYDGC9.25-31-1

Yukon Gear & Axle Chrysler 9.25" Dura Grip Positraction - YDGC9.25-31-1

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Fitment: Universal Fit
Fits Chrysler 9.25 inch rear
31 Spline
4-spring, clutch style positraction
Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
Fully rebuildable
Assembled in the USA
California Residents: WARNING

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$836.89

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Yukon Gear & Axle Chrysler 9.25" Dura Grip Positraction - YDGC9.25-31-1

Part #: YKGYDGC9.25-31-1

$836.89

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Fitment: Universal Fit
Fits Chrysler 9.25 inch rear
31 Spline
4-spring, clutch style positraction
Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
Fully rebuildable
Assembled in the USA
California Residents: WARNING

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Qualifies for Free Shipping

4WP PROTECTION PLAN

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Yukon Gear & Axle Ford 8.8 Dura Grip Positraction - YDGF8.8-31-1

Part Number: YKGYDGF8.8-31-1

Yukon Gear & Axle Ford 8.8 Dura Grip Positraction - YDGF8.8-31-1

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Fitment: Universal Fit
Fits Ford 8.8 inch with 31 spline axles
4-spring, clutch style positraction
Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
Fully rebuildable
Assembled in the USA
California Residents: WARNING

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$820.89

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Yukon Gear & Axle Ford 8.8 Dura Grip Positraction - YDGF8.8-31-1

Part #: YKGYDGF8.8-31-1

$820.89

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Fitment: Universal Fit
Fits Ford 8.8 inch with 31 spline axles
4-spring, clutch style positraction
Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
Fully rebuildable
Assembled in the USA
California Residents: WARNING

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PROMOTIONS AUTOMATICALLY APPLIED

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Qualifies for Free Shipping

4WP PROTECTION PLAN

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Part Number: YKGYDGF9-31-AG

Yukon Gear & Axle Ford 9" Trac Loc (Aggressive Design) - YDGF9-31-AG

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Fitment: Universal Fit
Fits Ford 9 inch with 31 spline axles
Trac Loc positraction
Clutch style positraction
Aggressive design
Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
Fully rebuildable
Assembled in the USA
California Residents: WARNING

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$824.89

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Yukon Gear & Axle Ford 9" Trac Loc (Aggressive Design) - YDGF9-31-AG

Part #: YKGYDGF9-31-AG

$824.89

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Ship to Home:

In-Stock Ships today ?

Fitment: Universal Fit
Fits Ford 9 inch with 31 spline axles
Trac Loc positraction
Clutch style positraction
Aggressive design
Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
Fully rebuildable
Assembled in the USA
California Residents: WARNING

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PROMOTIONS AUTOMATICALLY APPLIED

Lowest Price! Guaranteed! Request A Price Match

Qualifies for Free Shipping

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Part Number: YKGYPKC9.25-P-31

Yukon Chrysler 9.25" 31 Spline Spider Gear Kit - YPKC9.25-P-31

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Fitment: Universal Fit
Chrysler 9.25" positraction
Yukon Dura Grip
Spider gear kit
Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers
1 year warranty against manufacturer defects
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$382.89

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Yukon Chrysler 9.25" 31 Spline Spider Gear Kit - YPKC9.25-P-31

Part #: YKGYPKC9.25-P-31

$382.89

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In-Stock Ships today ?

Fitment: Universal Fit
Chrysler 9.25" positraction
Yukon Dura Grip
Spider gear kit
Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers
1 year warranty against manufacturer defects
California Residents: WARNING

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- View Less Specs

PROMOTIONS AUTOMATICALLY APPLIED

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Qualifies for Free Shipping

4WP PROTECTION PLAN

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Part Number: YKGYPKF9-S-31-2

Yukon Ford 9" 31 Spline Spider Gear Kit - YPKF9-S-31-2

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Fitment: Universal Fit
Ford 9" open differential
31 spline axles
2 pinion design
Spider gear kit
Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers
1 year warranty against manufacturer defects
California Residents: WARNING

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$283.89

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Yukon Ford 9" 31 Spline Spider Gear Kit - YPKF9-S-31-2

Part #: YKGYPKF9-S-31-2

$283.89

Only 3 left in Stock ?

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Free! Curbside & In-Store Pickup: Select A Store Near You

Ship to Home:

Only 3 left in Stock ?

Fitment: Universal Fit
Ford 9" open differential
31 spline axles
2 pinion design
Spider gear kit
Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers
1 year warranty against manufacturer defects
California Residents: WARNING

+ View More Specs

- View Less Specs

PROMOTIONS AUTOMATICALLY APPLIED

Lowest Price! Guaranteed! Request A Price Match

Qualifies for Free Shipping

4WP PROTECTION PLAN

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Eaton Detroit Locker Ford 8.8 Inch 31 Spline 7/8 Cross Pin Automatic Locker - 187C145A

Part Number: EAT187C145A

Eaton Detroit Locker Ford 8.8 Inch 31 Spline 7/8 Cross Pin Automatic Locker - 187C145A

5.0 5.0 (1)

How to Get it

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Fitment: Universal Fit
For Use With 31 Spline Axles
Automatic Locking
Legendary Traction
Unmatched Durability
California Residents: WARNING

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$974.99

$1,059.77

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Eaton Detroit Locker Ford 8.8 Inch 31 Spline 7/8 Cross Pin Automatic Locker - 187C145A

Part #: EAT187C145A

5.0 5.0 (1)

$974.99

$1,059.77

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Fitment: Universal Fit
For Use With 31 Spline Axles
Automatic Locking
Legendary Traction
Unmatched Durability
California Residents: WARNING

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PROMOTIONS AUTOMATICALLY APPLIED

Lowest Price! Guaranteed! Request A Price Match

Qualifies for Free Shipping

4WP PROTECTION PLAN

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Eaton Detroit TrueTrac Chrysler 9.25 Inch Rear Differential - 913A368

Part Number: EAT913A368

Eaton Detroit TrueTrac Chrysler 9.25 Inch Rear Differential - 913A368

5.0 5.0 (6)

How to Get it

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Ship to Home:

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Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
For Use In Rear Applications Only
Automatic Torque Biasing
Smooth Actuating
Clutchless Operation
California Residents: WARNING

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$764.99

$831.51

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Eaton Detroit TrueTrac Chrysler 9.25 Inch Rear Differential - 913A368

Part #: EAT913A368

5.0 5.0 (6)

$764.99

$831.51

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Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
For Use In Rear Applications Only
Automatic Torque Biasing
Smooth Actuating
Clutchless Operation
California Residents: WARNING

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PROMOTIONS AUTOMATICALLY APPLIED

Lowest Price! Guaranteed! Request A Price Match

Qualifies for Free Shipping

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Eaton Detroit TrueTrac Ford 8.8 Inch 31 Spline Rear Differential - 913A561

Part Number: EAT913A561

Eaton Detroit TrueTrac Ford 8.8 Inch 31 Spline Rear Differential - 913A561

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How to Get it

Free! Curbside & In-Store Pickup: Select A Store Near You

Ship to Home:

In-Stock Ships today ?

Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
For Use In Rear Applications Only
Automatic Torque Biasing
Smooth Actuating
Clutchless Operation
California Residents: WARNING

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$699.99

$760.86

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Eaton Detroit TrueTrac Ford 8.8 Inch 31 Spline Rear Differential - 913A561

Part #: EAT913A561

$699.99

$760.86

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In-Stock Ships today ?

Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
For Use In Rear Applications Only
Automatic Torque Biasing
Smooth Actuating
Clutchless Operation
California Residents: WARNING

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- View Less Specs

PROMOTIONS AUTOMATICALLY APPLIED

Lowest Price! Guaranteed! Request A Price Match

Qualifies for Free Shipping

4WP PROTECTION PLAN

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Eaton Detroit TrueTrac Ford 9 Inch 31 Spline Rear Differential - 913A586

Part Number: EAT913A586

Eaton Detroit TrueTrac Ford 9 Inch 31 Spline Rear Differential - 913A586

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How to Get it

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Ship to Home:

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Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
For Use In Rear Applications Only
Automatic Torque Biasing
Smooth Actuating
Clutchless Operation
California Residents: WARNING

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$639.99

$695.64

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Eaton Detroit TrueTrac Ford 9 Inch 31 Spline Rear Differential - 913A586

Part #: EAT913A586

$639.99

$695.64

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EASY RETURNS

How to Get it

Free! Curbside & In-Store Pickup: Select A Store Near You

Ship to Home:

Only 2 left in Stock ?

Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
For Use In Rear Applications Only
Automatic Torque Biasing
Smooth Actuating
Clutchless Operation
California Residents: WARNING

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PROMOTIONS AUTOMATICALLY APPLIED

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Part Number: EAT917A730

Eaton Chrysler 9.25" Detroit Truetrac Differential - 917A730

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11+ Ram 1500 (1/2 ton apps.)
Smooth and automatic engagement - no driver action needed
Maintenance free, more time on the road
Increases stability while towing
Improves off-road traction
Limits wheel spin-out and improves handling
Pinion gears: 6
Ring gear dia.: 9.25", all ratios
Axle splines: 31 teeth
Axle description: 235mm C-clip
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Eaton Chrysler 9.25" Detroit Truetrac Differential - 917A730

Part #: EAT917A730

$683.99

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Fitment: Universal Fit
11+ Ram 1500 (1/2 ton apps.)
Smooth and automatic engagement - no driver action needed
Maintenance free, more time on the road
Increases stability while towing
Improves off-road traction
Limits wheel spin-out and improves handling
Pinion gears: 6
Ring gear dia.: 9.25", all ratios
Axle splines: 31 teeth
Axle description: 235mm C-clip
California Residents: WARNING

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Part Number: YKGYAF880043

Yukon Ford 8.8" 1541H Alloy Left Hand Rear Axle - YAF880043

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Fitment: Universal Fit
Ford 8.8" - 31 Spline
Ford 8.8" 2010-2014 Mustang & Straight Axles w/ 3.250" OD Pinion Brg. 31 spline
31 spline
5 lug
1.620" bearing journal
31 13/16" long
Fits Ford 8.8" in 2005-2014 Mustang
Left hand side
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Yukon Ford 8.8" 1541H Alloy Left Hand Rear Axle - YAF880043

Part #: YKGYAF880043

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Fitment: Universal Fit
Ford 8.8" - 31 Spline
Ford 8.8" 2010-2014 Mustang & Straight Axles w/ 3.250" OD Pinion Brg. 31 spline
31 spline
5 lug
1.620" bearing journal
31 13/16" long
Fits Ford 8.8" in 2005-2014 Mustang
Left hand side
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Part Number: YKGYAF880069

Yukon Ford 8.8" 31 Spline Right Rear Axle - YAF880069

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Fitment: Universal Fit
Ford 8.8" - 31 Spline
Right rear axle with 31 spline
Double drilled for improved performance and reliability
Provides the most confidence off-road, on the street or at the track
Yukon products are built to withstand the harshest conditions
Engineered using state-of-the-art design software
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Yukon Ford 8.8" 31 Spline Right Rear Axle - YAF880069

Part #: YKGYAF880069

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Fitment: Universal Fit
Ford 8.8" - 31 Spline
Right rear axle with 31 spline
Double drilled for improved performance and reliability
Provides the most confidence off-road, on the street or at the track
Yukon products are built to withstand the harshest conditions
Engineered using state-of-the-art design software
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Part Number: YKGYAF880070

Yukon Gear & Axle Ford 8.8" 31 Spline Left Rear Axle - YAF880070

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Fitment: Universal Fit
Ford 8.8" - 31 Spline
Left hand, 31 spline axle
Yukon Axles are designed for long life and high durability for on and off-road use
Engineered to exceed OE standards
Provides the most confidence off-road, on the street or at the track
Yukon products are built to withstand the harshest conditions
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Yukon Gear & Axle Ford 8.8" 31 Spline Left Rear Axle - YAF880070

Part #: YKGYAF880070

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Fitment: Universal Fit
Ford 8.8" - 31 Spline
Left hand, 31 spline axle
Yukon Axles are designed for long life and high durability for on and off-road use
Engineered to exceed OE standards
Provides the most confidence off-road, on the street or at the track
Yukon products are built to withstand the harshest conditions
California Residents: WARNING

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Part Number: YKGYPKF9-P-31-4

Yukon Ford 9" 31 Spline Spider Gear Kit - YPKF9-P-31-4

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Fitment: Universal Fit
Ford 9" with Trac Loc positraction
31 spline axles
Spider gear kit
Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers
Does not contain clutches or the clutch hub
1 year warranty against Manufacturer defects
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Yukon Ford 9" 31 Spline Spider Gear Kit - YPKF9-P-31-4

Part #: YKGYPKF9-P-31-4

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Fitment: Universal Fit
Ford 9" with Trac Loc positraction
31 spline axles
Spider gear kit
Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers
Does not contain clutches or the clutch hub
1 year warranty against Manufacturer defects
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Part Number: YKGYPKF9-P-31-REB

Yukon Ford 9" 31 Spline Spider Gear Kit - YPKF9-P-31-REB

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Fitment: Universal Fit
Ford 9" with Trac Loc positraction
31 spline axles
Spider gear kit
Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers
Includes clutches and clutch hub
1 year warranty against Manufacturer defects
Actual product may vary photo used for illustration purposes
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Yukon Ford 9" 31 Spline Spider Gear Kit - YPKF9-P-31-REB

Part #: YKGYPKF9-P-31-REB

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Fitment: Universal Fit
Ford 9" with Trac Loc positraction
31 spline axles
Spider gear kit
Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers
Includes clutches and clutch hub
1 year warranty against Manufacturer defects
Actual product may vary photo used for illustration purposes
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Part Number: YKGYPKF9-S-31-4

Yukon Ford 9" 31 Spline Spider Gear Kit - YPKF9-S-31-4

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Fitment: Universal Fit
Ford 9" open differential
31 spline axles
4 pinion design
Spider gear kit
Includes two side gears, four pinion gears, cross pin shaft, roll pins and spider gear thrust washers
1 year warranty against manufacturer defects
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Yukon Ford 9" 31 Spline Spider Gear Kit - YPKF9-S-31-4

Part #: YKGYPKF9-S-31-4

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Fitment: Universal Fit
Ford 9" open differential
31 spline axles
4 pinion design
Spider gear kit
Includes two side gears, four pinion gears, cross pin shaft, roll pins and spider gear thrust washers
1 year warranty against manufacturer defects
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Eaton Detroit Locker Chrysler 9.25 Inch Automatic Locker - 187C172A

Part Number: EAT187C172A

Eaton Detroit Locker Chrysler 9.25 Inch Automatic Locker - 187C172A

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Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
Automatic Locking
Legendary Traction
Unmatched Durability
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Eaton Detroit Locker Chrysler 9.25 Inch Automatic Locker - 187C172A

Part #: EAT187C172A

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Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
Automatic Locking
Legendary Traction
Unmatched Durability
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Eaton Detroit Locker Nissan H233 Rear Automatic Locker - 187SL167A

Part Number: EAT187SL167A

Eaton Detroit Locker Nissan H233 Rear Automatic Locker - 187SL167A

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Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
Automatic Locking
Legendary Traction
Unmatched Durability
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Eaton Detroit Locker Nissan H233 Rear Automatic Locker - 187SL167A

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Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
Automatic Locking
Legendary Traction
Unmatched Durability
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Eaton Detroit Locker Ford 9 Inch 31 Spline Automatic Locker - 187SL17B

Part Number: EAT187SL17B

Eaton Detroit Locker Ford 9 Inch 31 Spline Automatic Locker - 187SL17B

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Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
Automatic Locking
Legendary Traction
Unmatched Durability
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Eaton Detroit Locker Ford 9 Inch 31 Spline Automatic Locker - 187SL17B

Part #: EAT187SL17B

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Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
Automatic Locking
Legendary Traction
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Eaton Ford 8.8 Inch 31 Spline Limited Slip - 19588-010

Part Number: EAT19588-010

Eaton Ford 8.8 Inch 31 Spline Limited Slip - 19588-010

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Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
Replaceable Carbon Fiber Clutches
All Forged Spider And Side Gears
Rebuildable
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Eaton Ford 8.8 Inch 31 Spline Limited Slip - 19588-010

Part #: EAT19588-010

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Fitment: Universal Fit
For Use With 31 Spline Axles
For Use With All Gears
Replaceable Carbon Fiber Clutches
All Forged Spider And Side Gears
Rebuildable
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4WP PROTECTION PLAN

Our Protection Plan covers your investment above and beyond the manufacturer's coverage. For only 10% more, if your item is damaged, fails or malfunctions, we'll replace it for free!

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