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Differential Axle Breather Replacement for ARB 170112 Kit Compatible with Drivetrain Assemblies, Differentials, Transmission and Transfer Case of 4×4 4WD Accessories

4.5 4.5 out of 5 stars 319 ratings

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Brand GreatUs
Product Grade
Replacement Part
Fit Type
Vehicle Specific Fit

About this item

  • A differential / axle breather serves the important purpose on a 4WD vehicle of venting the air pressure in drivetrain assemblies such as the differentials, transmission and transfer case.
  • The differential breather Kit is designed to eliminate the factory breathers shortcoming by providing a high flow, zero back pressure, zero vacuum breather system.
  • The differential breather Kit is unique in that it uses 8mm tubing (where most other kits use 6mm tubing).
  • 8mm Polyethylene tubing is oil resistant, water resistant and heat resistant,make the installation simple and fast.
  • Please note: It is a aftermarket replacement.
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Differential Axle Breather Replacement for ARB 170112 Kit Compatible with Drivetrain Assemblies, Differentials, Transmission and Transfer Case of 4×4 4WD Accessories


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Customer reviews

4.5 out of 5 stars
4.5 out of 5
319 global ratings

Customers say

Customers like the quality, value, performance and ease of installation of the engine air filter. They mention that all parts are top of the line, it works well and is good value for money. They appreciate the supplied fittings and that it works just as it should. They also appreciate ease of installing. However, some customers have reported that the tubing stiffens up after time and is not usable.

AI-generated from the text of customer reviews

14 customers mention14 positive0 negative

Customers are satisfied with the quality of the engine air filter. They mention that it is a fantastically put together system, with all parts being top of the line. Some customers also say that the product is solid and good to use, but not durable. Overall, most are happy with their purchase and recommend it to others.

"Works great, all parts are top of the line and the kit is half the price of the brand name competitors product." Read more

"...I use a 1/4 hose and adapters for my Tacoma line. This is still solid and good to use...." Read more

"...difficult to work with as it has a mind of its own but overall, very good product, does exactly what it says it will and as far as installs go,..." Read more

"...Solid quality product looks exactly the same as the higher priced name brand product. Same some money, buy this. Worth" Read more

12 customers mention12 positive0 negative

Customers are satisfied with the performance of the engine air filter. They mention that it works well, the stiffness of the hose is not a big issue, and the supplied fittings work perfectly in the rear diff opening. They also mention that the product is easy to install and seems great.

"Works great, all parts are top of the line and the kit is half the price of the brand name competitors product." Read more

"Kit fit well in my 4Runner and works fine, tubing was plenty flexible for me...." Read more

"...This is still solid and good to use. If I had to do it again , I'd just buy two of these and save some money...." Read more

"...Other than that it works well." Read more

7 customers mention7 positive0 negative

Customers appreciate the value of the engine air filter. They mention that it works great and has a good price.

"Works great, all parts are top of the line and the kit is half the price of the brand name competitors product." Read more

"Great for the price and value of the product. I was going to spend more on a name brand but this worked just as well." Read more

"...I ended up ordering a second kit for the ports.Great value for the money !" Read more

"I would say the actual breather is great for the price. The tubing it comes with is useless. It’s far too stiff and thin to be used on a moving axle...." Read more

6 customers mention6 positive0 negative

Customers find the installation process of the engine air filter to be easy. For example, they mention that it was fairly easy to install on their 4Runner, but they made some slight changes along the way.

"...does exactly what it says it will and as far as installs go, pretty straightforward. self tapping screws could be a teensy bit longer...." Read more

"Was a fairly easy install on my 4Runner, but I made some slight changes along the way with Y connectors..." Read more

"...Install was easy even though there were no directions. Not too complicated to put one end on the rear differential, run the supplied hose up to the..." Read more

"...Only simple hand tools required." Read more

3 customers mention3 positive0 negative

Customers are satisfied with the fit of the engine air filter. They mention that the provided tubing fits snugly inside their vehicle and that the kit fits well in their 4Runner.

"...Bolts can mount to factory threaded holes. Shark bite fittings are snug, but you can silicone the hose if you want to be overly cautious." Read more

"Kit fit well in my 4Runner and works fine, tubing was plenty flexible for me...." Read more

"...The larger front line is large enough that the supplied tubing fits very snugly inside (then just clamp it)...." Read more

8 customers mention0 positive8 negative

Customers are dissatisfied with the stiffness of the engine air filter. They mention that the tubing is very stiff and does not bend well. Some customers also mention that it stiffens up after time and could crack down the road.

"Hose is stiff, but avoids the possible $1-2k repair of differential or axle leak. Bolts can mount to factory threaded holes...." Read more

"...The tubing is a bit stiff and a little difficult to work with as it has a mind of its own but overall, very good product, does exactly what it says..." Read more

"...It seems to stiffen up after time so it could crack down the road. I'll update if it cracks or not." Read more

"The unit itself is very nice. However the tubing supplied is very stiff and doesn’t bend well." Read more

5 customers mention0 positive5 negative

Customers have negative opinions about the hose. They mention that it's not usable, the tubing is worthless, and the hosing is useless for both kits.

"...The hoses are both useless for both kits. I use a 1/4 hose and adapters for my Tacoma line. This is still solid and good to use...." Read more

"The hose is so bad it's probably not really worth buying this...." Read more

"...The tubing it comes with is useless. It’s far too stiff and thin to be used on a moving axle...." Read more

"...However the plastic tubing is absolute trash, very difficult to route and flex. I doubt it’ll hold up to actual heat and off-roading...." Read more

Easy install on 5th gen 4Runner
5 Stars
Easy install on 5th gen 4Runner
Was a fairly easy install on my 4Runner, but I made some slight changes along the way with Y connectors (running the diff & E-locker breathers on a common line to the front) and running the front factory breathers to it as well. A little heat shrink, hosebarbs, and heat applied makes connecting the smaller factory lines a snap. The larger front line is large enough that the supplied tubing fits very snugly inside (then just clamp it). The supplied fittings work perfectly in the rear diff opening.
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