Toyota Tacoma, Tundra, FJC, and 4Runner Differential Breather & Relocation KitState48Overland
***Hit the drop down box to select your vehicle options***
Follow the information below and pictures to assist with your installation
FJC-4Runner-Tacoma (Front and Rear Kit Available)
Tundra (Rear Kit Only Available)
This modification is done at your own risk. Proper installation, inspection and continued maintenance of this product lies with the end user. It is the end users sole responsibility to inspect, maintain, and clean the components used with this product including it’s filters on an occasional or as needed basis.
This kit replaces the rear differential axle vent. Front factory differential axle breather and ADD(automatic differential disconnect) vent are located next to each other by the battery for FJC, Tacoma and 4Runner.
Our breather filters allow for two-way, expansion and contraction of heated or rapidly cooled air. It eliminates hard vacuum pulls and helps reduce the stress on your axle seals.
You'll receive approximately 5.5-6 feet of reinforced fuel line hose for the rear axle breather relocation. You will also receive stainless steel hose clamps for specific applications.
A rubber grommet will be used for the mounting of the rear breather filter. It will require a 3/4" hole to be drilled out for the location of your choosing. It will double as the O-ring once the filter is snug to the hose barb fitting. Choose your mounting location carefully. You can also use a thin washer (not supplied) between flat breather and grommet to evenly spread the load from the top side when snugging down.
Our pictures show the fuel filler neck bezel for the Tacoma model:
Find a flat spot to drill, not a curved surface- on the 16+ Tacoma model, we recommend taking out the fuel filler bezel and placing the breather in the 1 o'clock position(refer to photo). Its important to locate the hole low enough so the hose barb on the opposite side can clear the sheet metal around the filler neck housing when re-installing.
The 10+ 4Runner flat breather location does not work in the filler neck bezel without modification-we suggest an accessible interior panel location.
For the passenger tail light application, we routed the hose over the top of the spare tire mount, between bottom of the bed and frame, diagonally and used zip ties where needed, doing our best to leave slack in the hose for suspension droop near the axle. The driver side tail light area is an easier & shorter length run.
**Please note, long travel suspension, not to be confused with a traditional mid travel set up, will require longer hose lengths, please make note when submitting the order if you have true long travel rear suspension.**
It is important to know that the low profile flat breather is only to be used for the rear axle application along with the rubber grommet. This filter is too long for the front breather hose barbs. The front breather hose barbs require the cone shaped filters plus O-rings when assembled. If you have a FJC- a cone breather is used in the fuel filler bezel area for the rear axle set up as shown in the product labeled photos.
If your model has a factory rear locker actuator vent breather as shown in the labeled photo then we have you covered with the required vacuum fitting that ties everything in clean with the rear axle breather relocation line (also included will be a 1/4" hose clamp for the factory actuator line to vacuum fitting connection). This set up will receive 1/4" inner diameter fuel line hose. Axle and filter end clamps are not needed as this will be a tight pressure fit. Recommend you use a light touch of lubricant when inserting this hose size over the provided hose barb and axle barb ends.
Our kit includes the proper British Standard Pipe Thread (BSPT) hose barb required for the axle connection-these threads are tapered by design and self sealing. It is a brass fitting. Do not over tighten. Only tighten until snug then a 1/2 to 3/4 turn more. Teflon tape, thread tape or liquid tape is not required for the threads of this fitting into the axle housing.
We have seen rear kits going for $60-$75 and up. The aggravation of having to mount a manifold and route multiple lines of hose to complete the job can be annoying. Our kits cover front and rear applications. There is no relocation for the front. Just replacement of the vent/breather. Honestly, once you see how high up the factory locations are for these breathers, you will know why no relocation is needed. You are pretty much dealing with other issues if you let water get that high in the engine bay.
Feel free to call 833-STATE-48 if you have any questions or need further instruction.
(This will no longer contain the drain plug and fill plug gaskets for doing rear diff fluid service)