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Dual Battery Kit
Dual Battery Kit
Dual Battery Kit for 2010-2014 FJ Cruiser and 5th Generation 4Runner

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The 2010-2014 FJ Cruiser has pretty limited space in the engine bay, making it more difficult than previous years to fit add-ons like a second battery, auxiliary relay box, compressor etc.

One advantage of the 2010-2014 FJ however, is that it has a reinforced mounting point on the passenger side front of the vehicle. This location is a mirror image of the driver side, which holds the stock battery. This is desirable for a second battery because the body has been reinforced in this area and has considerably more structure than the thin wheel well sheet metal found near the firewall in the common second battery location.

This kit allows the installation of a second, group 34 battery in this location and consists of the following parts:

- CNC Bent Heavy Gauge 304 Stainless Steel Tray
- Black Anodized 6061 Aluminum Battery Clamp
- HDPE Tray Liner
- Tin-Zinc Plated J-Bolts
- Stainless and Cad Plated Hardware to Complete the Installation

The stainless tray bolts to the body in the second battery location, pushing the battery forward and out of the way of the air box. It includes integral mounting brackets to relocate the power steering reservoir and AC line that sit on the mounting plane, pushing then slightly further into the engine bay.

For 2010-2012 FJ’s, this kit is all you need to add a second battery! The washer fluid reservoir kit and smog pump relocation kit are not required to complete installation of the dual battery tray on these model years. 2013+ FJ's and 4Runner's will need to relocate the secondary air injection pump. A kit that works in conjunction with our washer fluid reservoir relocation system to move the pump to the rear passenger location is available and will be discussed later.

Compatible Batteries:

The kit was designed around an Optima Yellow Top D34 battery, but will fit other group 34 size batteries. The maximum battery dimensions are 10.1”L x 6.8”W x 6.9”H, with the height measured from tray to clamp and not including the terminals. Many group 34 batteries are longer than the Optima, so be sure to check.

Secondary Air Injection Pump Relocation Kit:

As previously mentioned, 2013 and 2014 FJs as well as 2013-2017 4Runners will need to relocate the secondary air injection pump to the passenger rear of the vehicle. This kit allows just that.

The kit includes the following:
- 304 Stainless Steel Mounting Bracket
- Stainless Coupler
- Plug and Play Pump Harness Extension
- Stainless and Silicone Tube Clamp
- All Hardware to Complete the Installation

While this kit will retain complete functionality of the secondary air injection system and prevent any codes from being thrown, it may cause issues with the visual emissions equipment inspection in some states. As such, this kit is designed for off road use only. The buyer is responsible for understanding any local, state or federal regulations pertaining to the on road use of this kit.

ARB Compressor Mount

This kit allows an ARB CKMA12 (single) compressor to be mounted in place of our washer fluid reservoir on the stand-alone emission pump relocation kit. This is especially useful for customers that needed to relocate their secondary air injection pump to allow installation of our dual battery kit but did not have a need for our upgraded washer fluid reservoir. The bracket is compatible with all past and current stand-alone emission pump relocation kits, as well as with the washer fluid reservoir mounting brackets if it was so desired to replace the washer fluid reservoir with the ARB compressor.

The bracket is formed from heavy gauge 304 stainless steel, and includes all hardware required to mount the ARB CKMA12 compressor (not included). An integral stud is also provided to mount the ARB supplied control relay.

ARB compressor mount cannot be used in conjunction with the washer fluid reservoir relocation kit. Requires installation of the secondary air injection pump relocation kit.

Manufacturer ShrockWorks
Part #: FJC-DBK
Fits: Toyota FJ Cruiser & 4Runner 2010-2014
Washer Fluid Reservoir
Pump Relocation Kit
ARB Compressor Mount



Dual Battery Kit
Dual Battery Kit
Dual Battery Kit
Dual Battery Kit
Dual Battery Kit