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Toyota 4Runner Gears, Lockers, and Rebuild Kits
Ring and pinion gears, lockers, and overhaul kits for Toyota 4Runners.



Toyota 4Runner Axle Parts

Gear Ratio Recommendations (2003+)

Tire Size Highway OEM Towing
28" to 33" 3.55 3.73 4.11
34" to 36" 4.56 5.88 5.29
37" to 40" 5.29 5.71 5.71

Tools: Gear Ratio Calculator / Engine RPM Calculator
Locker Recommendations

Toyota 4Runners are extremely capable off-road even in base form. Modern 4Runners produce enough power and have extremely advanced traction control systems that rarely require any gear or locker upgrades with tires up to 33" tall. For extreme off-road applications a set of ARB air lockers and aftermarket gears are recommended.


Toyota 4Runner Gen. 3 (1995 - 2002)

The following gears, lockers and install kits are available for 1995 to 2002 Toyota 4Runner 2wd and 4x4 SUVs. All first generation 4Runner 4x4 models came with the reverse rotation Toyota 7.5" IFS front differential. All 4Runners with a factory rear electric locker came with the Toyota 8" TV6 rear axle and all 4x4 4Runners without the electric locker were built with the Toyota 8" rear axle. 2wd 4Runners came with either the standard Toyota 7.5" rear axle or the larger Toyota 8.4" axle.

Front Axle: Toyota 7.5" IFS
Toyota 7.5 IFS
27 Spline / CV Shafts
50mm Bearing Journals
Reverse Rotation


Gears
4.56R
4.88R
5.29R
Install Kits
Master
Minor
Lockers
ARB Air Locker
Eaton TrueTrac
Spartan Locker

• 95-04 4Runner front axles have 50mm bearing journals.
• Parts will not fit '86-04 4Runners w/ 40mm bearings.
• Uses the minor install kit for the 7.5" IFS V6.
Rear Axle: Toyota 8" V6
Without Factory Locker

Toyota 8 V6
30 Spline
Standard Rotation


Gears
3.73*
4.11†
4.30†
4.56†
4.88†
5.29†
5.71*
Install Kits
Master
Minor
Lockers
ARB Air Locker §
Eaton TrueTrac §
Yukon Zip Locker
Detroit Locker
Grizzly Locker

† Includes 29 Spline Pinion Yoke.
* Requires 29 Spline Pinion Yoke.
• 4x4 V6 models used 50mm carrier bearings.
• 2wd V6 models used 45mm carrier bearings.
§ Requires 50mm 32010X bearings for 2wd models.



Rear 4x4 Axle: Toyota 8" TV6 (Elocker)
With Factory Locker

Toyota TV6
30 Spline
Standard Rotation


Gears
3.73 §
4.11
4.30
4.56
4.88
5.29
5.71 §
Install Kits
Master †
Lockers
OEM Locker Only

• All 4Runners with factory locker had this rear axle.
† For use with factory e-locker.
§ Requires 29 spline pinion yoke.

© Copyright Filthy Motorsports, DrivetrainShop.com - Do Not Copy or Reproduce Without Written Permission.



Toyota 4Runner Gen. 4 (2003 - 2009)

The following gears, lockers and install kits are available for 2003 to 2009 Toyota 4Runner models. All fourth generation 4Runner 4x4 models feature the reverse rotation Toyota 8" IFS clamshell front differential. All 4Runners with a factory rear electric locker came with the Toyota 8" TV6 rear axle while open differential 4Runners were built with the Toyota 8" rear axle.

Front Axle: Toyota 8" IFS
Toyota 8 IFS
30 Spline / CV Shafts
3.73 / 3.90 Carrier Break
Clamshell Housing
Reverse Rotation


Gears
4.56R(T)
4.88R(T)
Install Kits
Master
Minor
Lockers (3.73 - )
ARB Air Locker

3.91R*
4.30R*
4.56R*
4.88R*
5.29R*

*For aftermarket 3.90+
carriers and lockers


(T) Thick gears for 3.73-
carriers and lockers

Lockers (3.90 + )
ARB Air Locker

Axle Shafts
RCV Ultimate Chromoly CV Axle Shafts
Rear Axle: Toyota 8" V6
Without Factory Locker

Toyota 8 V6
30 Spline
Standard Rotation


Gears
3.73*
4.11†
4.30†
4.56†
4.88†
5.29†
5.71*
Install Kits
Master
Minor
Lockers
ARB Air Locker §
Eaton TrueTrac §
Yukon Zip Locker
Detroit Locker
Grizzly Locker

† Includes 29 Spline Pinion Yoke.
* Requires 29 Spline Pinion Yoke.
• 4x4 V6 models used 50mm carrier bearings.
• 2wd V6 models used 45mm carrier bearings.
§ Requires 50mm 32010X bearings for 2wd models.



Rear 4x4 Axle: Toyota 8" TV6 (Elocker)
With Factory Locker

Toyota TV6
30 Spline
Standard Rotation


Gears
3.73 §
4.11
4.30
4.56
4.88
5.29
5.71 §
Install Kits
Master †
Lockers
OEM Locker Only

• All 4Runners with factory locker had this rear axle.
† For use with factory e-locker.
§ Requires 29 spline pinion yoke.

© Copyright Filthy Motorsports, DrivetrainShop.com - Do Not Copy or Reproduce Without Written Permission.



Toyota 4Runner Gen. 5 (2010-2020)

The following gears, lockers and install kits are available for 2010 to 2020 Toyota 4Runner, FJ Cruiser, Lexus GX460, and Land Cruiser Prado 150 models. All fifth generation 4Runners featured the reverse rotation Toyota 8" IFS clamshell front differential and the Toyota 8.2 rear axle with and available OEM electric locker.

Front Axle: Toyota 8" IFS
Toyota 8 IFS
30 Spline / CV Shafts
3.73 / 3.90 Carrier Break
Clamshell Housing
Reverse Rotation


Gears
4.56R(T)
4.88R(T)
Install Kits
Master
Minor
Lockers (3.73 - )
ARB Air Locker

3.91R*
4.30R*
4.56R*
4.88R*
5.29R*

*For aftermarket 3.90+
carriers and lockers


(T) Thick gears for 3.73-
carriers and lockers

Lockers (3.90 + )
ARB Air Locker

Axle Shafts
RCV Ultimate Chromoly CV Axle Shafts
Rear Axle: Toyota 8.2"
Without Factory Locker


Gears
4.56
4.88
Install Kits
Minor
Master
Lockers
ARB Air Locker



Rear Axle: Toyota 8.2"
With Factory Locker


Gears
4.56
4.88
Install Kits
Minor
Master
Lockers
OEM Locker Only*

* To replace the factory electic locker, a non-elocker 3rd member is required. The new locker would then wire into the factory harness.

• Due to how well the factory traction control system works on this generation of Toyota SUVs, lockers are generally only needed for the most extreme off-road applications.

© Copyright Filthy Motorsports, DrivetrainShop.com - Do Not Copy or Reproduce Without Written Permission.



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