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ARB

ARB 170112 DIFFERENTIAL BREATHER KIT Vent the air pressure in drivetrain assemblies such as the differentials, transmission and transfer case.

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Availability: In Stock.
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Arrives Wednesday, Aug 19
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Features

  • ABOUT ARB 170112: The ARB Differential Breather Kit is designed to provide a high-flow, zero back pressure, zero vacuum breather system to keep your drivetrain free of water. This is achieved with a central high-flow air filter and manifold that will allow up to four drivetrain assemblies to be vented to one central location, positioned high enough to avoid water during crossings.
  • CONSEQUENCES OF NOT HAVING ARB 170112: When drivetrain assemblies such as your vehicles differentials, gearbox and transfer case heat up under normal operation, the air inside expands and increases pressure, not suitable for the vehicle. The ARB Differential Breather Kit is designed to provide a high-flow, zero back pressure, zero vacuum breather system to keep your drivetrain free of water.
  • HOW DOES DIFFERENTIAL BREATHER KIT WORKS: It uses a central high-flow air filter and manifold that will allow up to four drivetrain assemblies to be vented to one central location, positioned high enough to avoid water during crossings.
  • PREVENT WATER FROM CONTAMINATING COMPONENTS: The ARB Differential Axle Breather Kit eliminates water from contaminating the oil and damaging your drivetrain components by providing a high flow, with no back pressure, zero vacuum breather system.
  • ARB 170112 KIT INCLUDES: Differential Axle Breather / Incl. Manifold / 4 Ports To Connect Up To 4 Breather Lines 7 Air Filter Port / Air Filter Assembly / Push-In Fittings / Plugs / Tubing / Screws / Cable Ties

Description

The ARB Differential Breather Kit is designed to provide a high-flow, zero back pressure, zero vacuum breather system to keep your drivetrain free of water. This is achieved with a central high-flow air filter and manifold that will allow up to four drivetrain assemblies to be vented to one central location, positioned high enough to avoid water during crossings. When drivetrain assemblies such as your vehicle’s differentials, gearbox and transfer case heat up under normal operation, the air inside expands and increases pressure, not suitable for the vehicle. The ARB Differential Breather Kit is designed to provide a high-flow, zero back pressure, zero vacuum breather system to keep your drivetrain free of water. It uses a central high-flow air filter and manifold that will allow up to four drivetrain assemblies to be vented to one central location, positioned high enough to avoid water during crossings. ARB AS: leading manufacturer / International Renown for Award-Winning Products / Tested for durability in real-world conditions / Meeting or exceeding all required and standardized testing. The ARB Differential Axle Breather Kit eliminates water from contaminating the oil and damaging your drivetrain components by providing a high flow, with no back pressure, zero vacuum breather system. Differential Axle Breather / Incl. Manifold / 4 Ports To Connect Up To 4 Breather Lines 7 Air Filter Port / Air Filter Assembly / Push-In Fittings / Plugs / Tubing / Screws / Cable Ties Anodized aluminum manifold with 5 Ports and 2 mounting holes / 4 x 1/8" BSP Ports / 1 x 1/4" NPT Port for the Air Filter / 4 x 8 mm-1/8" BSP Push-In Fittings / 3 x 1/8" BSP Plugs for plugging Unused Ports / 2 x Self-Tapping Screws / 25 x Cable Ties / 8 m x 8 mm Polyethylene Tubing. ARB 170112 DIFFERENTIAL BREATHER KIT is extremely important insurance for your 4WD if you drive through water. In essence, when you go through a puddle that is near or above diff height, you are dunking a hot differential into cold water, this aggressive temperature change can damage your vehicle.

Brand: ARB


Item dimensions L x W x H: 10.63 x 10.24 x 5.51 inches


Inlet Connection Type: Push-In


Outlet Connection Type: Push Fit


Number of Ports: 7


Number of Packs: 1


Global Trade Identification Number: 75


Unit Count: 1 Count


Manufacturer: ARB


Number of Items: 1


Inlet Connection Type: Push-In


Outlet Connection Type: Push Fit


Number of Ports: 7


Connector Type: Push-fit


Valve Type: Breather


Item Dimensions: 10.63 x 10.24 x 5.51 inches


Item Weight: 450 g


Brand Name: ARB


Model Number: 170112


Number of Packs: 1


Global Trade Identification Number: 75


Unit Count: 1 Count


Manufacturer: ARB


Manufacturer Warranty Description: Warranty


Included Components: Manufactuered Brand Product


Item Type Name: Automotive Part


Number of Pieces: 1


Set Name: ARB Differential Breather Kit


Manufacturer Part Number: 170112


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 19

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Works well, you'll want a small mod if you have a 4runner with a rear locker
Easy install on a 5th generation 4runner. There is a 6mm threaded pitch hole on the passenger side of the engine compartment that works well for the bottom bolt of the manifold, then just use one of the self-tappers included to lock it into place. I went ahead and grabbed some t-barbs and waterproof tape to add a junction to the breather just above the rear differential so I could also extend the breather for the rear locker. https://amzn.to/408wvRq and https://amzn.to/3SXF25P Took me about 30 minutes total, easy mod that will set your mind at ease so you don't go polluting your gear oil or blow out your seals. ... show more
Reviewed in the United States on June 18, 2025 by ATXexas

  • Good quality easy install
ARB make some good stuff and this is no different. The 2 sheet metal screws are short so I chucked them and use stainless nylock and bolt. Much more secure. I put mine behind my passenger taillight as high as I could. Getting a drill in wasn’t easy but it worked. I took my time running the hoses to make sure they are hidden and away from damage. Happy the way it turned out but seeing how it actually works in mud and water will determine my over all satisfaction. ... show more
Reviewed in the United States on September 25, 2025 by mark weinhandl

  • Cant be ARB.
ARB- the king of offroading.
Reviewed in the United States on August 5, 2026 by Avin

  • Quick and easy install
Worked perfectly for my 2019 Toyota 4 Runner. The install was wuick and easy and the threads matched the ones on my rear differential. There was enough tube to do the rear diff and e-locker, though I had to buy an enlarging hose coupler to join the ARB tube to the OEM e-locker breather tube. No biggie as it was less than $2 for a pack at the local auto store. The block and filter were easily mounted near high on the side wall in the engine bay just behind the air box/intake. Maybe took 30 mins to install. Quick tip: start running the tubes from the engine bay, down, and back. Also, if you're doing elocker and diff, just fold the tube in half and run/secure it as one then just cut/separate it in the rear to give u the two connections. I thought about just running one tube to the filter then using a splitter/T-coupler in the rear, but I wasn't sure if that was a good idea. I guess running two lines will at least keep things separate. ... show more
Reviewed in the United States on March 4, 2019 by JEV

  • Awesome product
Worked great! I connected the front and rear breathers together at the manifold. I positioned the breather in the engine bay. Great product
Reviewed in the United States on December 4, 2025 by David Houle

  • Creeks and parking lots during Kings tides not an issue.....
I have a 2024 Toyota land cruiser simple quick add to the rear and front diff breather. My front diff stock breather was already plugged with dust. Now they both vent on drivers side fire wall.
Reviewed in the United States on December 21, 2025 by GMS

  • Worked Great On Our 2021 4Runner
After taking our 2021 4Runner out on a couple off-roading adventures, we realized that we needed to mod our truck to prevent any possible issues with water getting in our rear differential. This kit did the job! First with the positives. This kit has everything you need for modding your truck. I mounted the manifold in the engine and still had plenty of tubing left over. I'm also very happy with the quality of the manifold and tubing (though with a complaint, see below). The push-connect parts also made installation very easy while giving confidence that it won't pull out. I only have two complaints with this kit. First, some steps in the instructions weren't the easiest to understand, but there are plenty of YouTube videos to get around this. More concerning is that the sturdiness of the material causes the tubing to kink very easily due to the natural coil. If you don't straighten out the tubing before running it through your truck, DO NOT pull to uncoil the tubing. Take the extra time to carefully uncoil the tubing. I mistakenly pulled on the tubing too hard to straighten it out and it bent right in half. I was worried this kink would cause the tube to crack, but fortunately it did not. This is an awesome kit and I recommend this if you plan to do any water fording in your truck. It's an easy DIY, even if you're like me and do not have much experience working on cars. ... show more
Reviewed in the United States on February 27, 2022 by Kevin Yu

  • ARB Breather for Lexus GX460
Had these professionally installed on 2010 Lexus GX460 for the front and rear differential. Really love the quality, durability and ease of installing under the hood. Went through mud and water a couple of times with no issues. The price was a little more then it should have been for some plastic tubing and breather. Curious to know if the transfer case and transmission have a breather also that I could tie into this set. ... show more
Reviewed in the United States on July 1, 2020 by Jimmy Adams

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