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North America Toyota Fitment Guide for Harrop Eaton ELocker™

Toyota Vehicle Listings

The following pages provide differential detail for early Pick-Ups, Tacomas, 4Runners, T100s, Tundras, Sequoias, Land Cruisers and FJ Cruisers. While not listed, all of our elocker sales include genuine Koyo carrier bearings and gaskets as part of the Terrain Tamer value package. 

Introduction

Toyota has offered a wide range of small trucks, SUVs, offroad vehicles and light commercial vehicles over the years. Manufactured and/or assembled in Japan, the USA and Mexico, vehicles have been fitted with a myriad of drivetrain options. For our purposes, the Toyota family of differentials can offer a confusing landscape when approaching the question of “what do I have?” and “what do I need?” when considering an aftermarket locker

The OEM differentials listed below are all non-locking (“elocker”) units from the factory and the nomenclature in terms of suspension type (IFS, solid), gear size and other details are used in the industry to describe and identify differentials installed at the factory. It should be noted that the actual diameter of the ring gears for these differentials are not exactly as shown below, but are more a convenient method of description.

It is important to note that “Elocker” is a trade-marked name owned by Eaton Corporation and the full name of the product we support is the Harrop Eaton ELocker™.

Information Resources

At Cruiser Brothers, we know a bit about Toyota differentials and through the Terrain Tamer / Harrop relationship, are growing our knowledge base every day. Our work with our partners, installing shops, vehicle owners and customers is challenging and satisfying. We appreciate your support and collaboration.

There are some good sources of information out there. Here are some examples:

  • Ken Francisco at Gear Installs (www.gearinstalls.com) is a recognized expert for differential set-ups and his website has write-ups on Harrop (and other) installs and upgrades he has done, including re-gears.
  • 4x4 Wire has a detailed explanation of Toyota differentials in North America at http://home.4x4wire.com/erik/diffs/#types
  • The IH8MUD online community, Yota Tech, Tacoma World and other forums all have robust discussions and content on the subject. A word of warning, though: Not every comment or participant is accurate or suitable for your situation.
  • A number of install shops have experience with Harrop Eaton ELockers™, but here are some of the shops we have most often worked with can be seen here – and we are always happy to develop new shop/reseller relationships.
  • A note on installation: The removal and installation of solid axle differentials are within the capabilities of many backyard mechanics and it may not be necessary to use a professional. Setting up the gears and locker in the carrier is a little more complicated, as are the carriers for vehicles with independent front suspensions. For owners that want to do their own install but need some help setting up the differentials – some shops will provide a service to just do that part of the work. Ken Francisco at Gear Installs (see above) is one such solution. Ken does not do installs – only diff set-up.

Factory Toyota Elockers

This listing does not include replacement options for those with OEM Toyota lockers in their rigs. For Land Cruiser owners, the Harrops are generally a direct fit to OEM locker axle housings, with a little modification. For owners of other models with 8” factory rear elockers, the A9444 Harrop should fit with replacement of the differential carrier and modification of the axle housing. Give us a call if you have a failed factory elocker and you we will work with you.

How We Sell and Service

Even though we have an online store, Cruiser Brothers sells through installing shops and specialist resellers, so every new locker comes with the support of a regional specialist to support your installation with technical support.

We do not set up diffs or provide installation services, but we can hook you up with a trusted provider to get you locked up.

Place an order online or give us a call at 1-800-224-7801, the price doesn’t change. We always call to confirm what you have, what you need and what you want before we fulfill your order.

Notes on the Fitment Guide:

1. Vehicles may have been modified, including axle swaps, locker installs and gear changes.

2. It is important that customers know what they have before they order.

3. Full float rear axles are required to fit Harrop ELockers and some variants in 40, 60, 70 and 80 Series do not have full floaters. Be sure to check before you order. See the “Tech” pull-down menu on the Yotalockers.com home age to find out how to determine if your vehicle has a full float axle.

4. Land Cruisers with OEM factory lockers (cable and electric) may be able to fit Harrop ELockers, so check with your installer or give us a call to discuss.

5. Tacomas, 4Runners and other Toyotas with OEM factory elockers can fit Harrop ELockers, but some modifications are required, including replacement of the differential carrier and some grinding and drilling on the axle housing. Again, if you have an OEM-locked rig, give us a call to walk through what is required.

6. Later models of Tacoma, 4Runner, FJ Cruiser and GX 460 have two front Harrops to choose between and the chart shows these vehicles/elockers marked in red. You need to know your gear ratio before you order to be able to select the correct unit for your need. Also, these two Harrops require some minor grinding on the housing to clear the electromagnet

Vehicles with final drive gear ratios of 3.73:1 and down are served by Harrop part number A10994

Vehicles with final drive gear ratios of 3.91:1 and up are served by Harrop part number A11110

7. The issue above is very important if you may install different gears / ratio in the future. If you install one of these units and then re-gear, you may not be able to use your Harrop.

8. Installation of a Harrop Elocker (or two of them) is a great time to consider installation of new gears if you are planning that upgrade at some point. Do it now and save the second round of labor for installation and set-up.

 

Series
Years
A9334 8”RG  10 bolt
A9378 9.5”RG
A11114 8.2”RG  12 bolt
A11167 A10994

A13457 

8.4”RG  12 bolt

Pick Up
1979 to  1985
Front Rear
 
 
 
 
 
 
 
     
 
1986 to  1995
Rear
 
 
 
 
 
Front
 
     
Tacoma
1995 to  2004
 
 
 
 
 
 
 
 
Front   Rear
 
2005 to  2015
 
 
 
 
 
Front
 
 
  Front Rear
4Runner
1984 to  1985
Front Rear
 
 
 
 
 
 
 
     
 
1986 to  1995
Rear
 
 
 
 
 
Front
 
     
 
1996 to  2002
Rear
 
 
 
 
 
 
 
Front    
 
2003 to  2009
Rear
 
 
 
 
Front
 
 
  Front  
 
2010 to  2015
 
 
 
 
Rear
Front
 
 
  Front  
T100
1993 to  1998
 
 
 
 
 
 
Front
 
    Rear
Tundra
1999 to  2006
 
 
 
 
 
 
 
 
Front   Rear
Sequoia
2001 to  2007
 
 
 
 
 
 
 
 
Front   Rear
LC 40
1969 to  1984
 
Front Rear
 
 
 
 
 
 
     
LC 60
1982 to  1990
 
Front Rear
 
 
 
 
 
 
     
LC 70
1985 to  1990
 
Front Rear
 
 
 
 
 
 
     
 
1990 to  1999
Front
Rear
 
 
 
 
 
 
     
 
1999 to  2015
Front
 
Rear
 
 
 
 
 
     
LC 80
1990 to  1997
Front
Rear
 
 
 
 
 
 
     
LC 100
1998 to  2007
 
 
Rear
Front
 
 
 
 
     
LC 200
2007 to  2016
 
 
Rear
 
 
 
 
Front
     
FJ  Cruiser
2005 to  2009
Rear
 
 
 
Front
 
 
  Front  
 
2010 to  2014
 
 
 
 
Rear
Front
 
 
  Front  
Lexus LX 450 / J80
1996 to  1997
Front
Rear
 
 
 
 
 
 
     
Lexus LX 470 / J100
1998 to  2007
 
 
Rear
Front
 
 
 
     
Lexus LX 560 / J200
2008 to  2015
 
 
Rear
 
 
 
 
Front
     
Lexus GX 470 / J120
2003 to  2009
Rear
 
 
 
 
Front
 
 
  Front  
Lexus GX 470 / J150
2010 to  2015
 
 
 
 
Rear
Front
 
 
  Front