If you take your 4×4 through deep water, mud, or river crossings, you know the sinking feeling of water finding its way into your differentials. A diff breather kit is a simple, affordable upgrade that vents pressure from your drivetrain while keeping water and contaminants out. Without it, a single deep crossing can turn your gear oil milky and lead to costly repairs.
This guide reviews the top 10 diff breather kits on the market, from the iconic ARB 170112 to budget-friendly alternatives. We break down each kit’s features, pros, cons, and best use case, so you can choose the one that fits your vehicle and driving style. Whether you’re a weekend warrior or a hardcore rock crawler, we’ve got you covered.
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ARB 170112 DIFFERENTIAL BREATHER KIT Vent the air pressure in drivetrain as…
Best forSerious off-roaders wanting proven reli…
- High-flow central filter
- Zero back pressure design
ConsiderPremium price
RAYTEEN Differential Breather Kit – High-Flow Axle Vent Air Pressure in Dif…
Best forJeep and Toyota owners wanting dual fil…
- Stainless steel filters
- Vents up to four assemblies
ConsiderMay be overkill for mild use
PSLER Differential Axle Breather Kit Replace 170112 for 4×4 4WD Accessories
Best forBudget-conscious 4×4 owners
- Affordable ARB alternative
- Vents up to four components
ConsiderBuild quality not as premium
Bevinsee Differential Breather Kit Aluminium Universal
Best forPrecision-minded owners wanting premium…
- CNC machined aluminium
- Stainless steel plug
ConsiderHigher price for materials
Differential Axle Breather Replacement for ARB 170112 Kit
Best forOwners wanting thicker 8mm tubing
- 8mm tubing for better flow
- Oil and water resistant
ConsiderMay require extra mounting hardware
Differential Breather Kit Remove Air Pressure from Differentials Transmissi…
Best forSimple, no-frills installation
- Easy to install
- Vents up to four components
ConsiderBasic design
BoCID Universal 4 Point DIFF Breather Kit Compatible with Toyota Landcruise…
Best forToyota and Nissan 4×4 owners
- Compatible with Toyota and Nissan
- ARB-style filter design
ConsiderLimited to specific brands
Differential Axle Breather Kit,fit for ARB 170112,4×4 4WD Accessories
Best forProfessional-grade durability
- 8mm tubing
- High temp and oil resistant
ConsiderMay be more expensive than budget kits
Zuomeng Differential Breather KIT, Remove Air Pressure from Differentials, …
Best forExtreme off-road and racing conditions
- High-flow central filter
- Vents up to four components
ConsiderPremium price
Rear Differential Breather Vent, Rear Diff Vent Breather Hose 2-Pack
Best forToyota and Lexus owners needing direct …
- Compact 2-pack
- Wide Toyota/Lexus compatibility
ConsiderOnly covers two components
ARB 170112 Differential Breather Kit – The Gold Standard
Brand: ARB
The ARB 170112 is the gold standard for diff breather kits, offering unmatched reliability and performance.
The ARB 170112 is the benchmark for diff breather kits, and for good reason. It uses a central high-flow air filter and manifold to vent up to four drivetrain assemblies—front and rear diffs, transmission, and transfer case—to a single, elevated location. This design ensures zero back pressure and zero vacuum, so your seals stay happy and water stays out.
The kit is engineered to handle the heat expansion inside your drivetrain, preventing the air pressure from forcing water past your axle seals during deep water crossings. The high-flow filter is durable and easy to mount, and the included hardware is top-notch. If you want the best protection for your rig, this is the kit to beat.
- High-flow central filter
- Zero back pressure design
- Vents up to four assemblies
- Premium price
- Installation requires routing
RAYTEEN Differential Breather Kit – Dual Stainless Filters
Brand: RAYTEEN
The RAYTEEN kit offers dual stainless filters for enhanced durability and performance in harsh conditions.
The RAYTEEN kit stands out with its dual central high-flow stainless steel air filters, which provide excellent filtration and durability. It can vent up to four drivetrain assemblies, just like the ARB, but the stainless construction adds extra corrosion resistance—a big plus if you frequently drive in saltwater or muddy conditions.
This kit is designed to extend your breather hoses to prevent mud and water ingress, making it ideal for Jeeps, Toyotas, and other 4x4s. The installation is straightforward, and the dual filters ensure consistent airflow even if one gets clogged. For off-roaders who want a modern twist on a classic design, the RAYTEEN is a solid choice.
- Stainless steel filters
- Vents up to four assemblies
- Corrosion resistant
- May be overkill for mild use
- Filter placement needs planning
PSLER Differential Axle Breather Kit – Budget-Friendly ARB Replacement
Brand: PSLER
The PSLER kit provides reliable diff breather protection at a budget-friendly price point.
The PSLER kit is designed as a direct replacement for the ARB 170112, offering similar functionality at a more accessible price point. It includes a high-flow air filter and manifold to vent up to four driveline components, ensuring your differentials, transmission, and transfer case stay pressure-balanced and water-free.
The kit is built with safety and durability in mind, featuring increased ventilation holes and heat sinks to manage high temperatures during long drives. Its waterproof construction prevents water from contaminating your oil, which is critical for off-road reliability. If you’re on a budget but don’t want to compromise on protection, this is a smart pick.
- Affordable ARB alternative
- Vents up to four components
- Heat sink design
- Build quality not as premium
- Hose routing may need adjustment
Bevinsee Differential Breather Kit – CNC Machined Aluminium
Brand: Bevinsee
The Bevinsee kit offers premium CNC-machined construction and robust sealing for leak-free performance.
The Bevinsee kit is a standout for its lightweight yet durable aluminum alloy body, which is CNC machined and surface anodized for a precise fit and excellent corrosion resistance. This attention to detail ensures no oil leaks, even under high pressure, and the anodized surface adds a sleek look to your engine bay.
It features a stainless steel plug that can handle up to 1.6Mpa of pressure, along with a Viton sealing ring that resists high temperatures and prevents leaks. The stainless steel waterproof ventilation valve operates across a wide temperature range (-40℃ to 125℃), making it suitable for extreme climates. If you value precision engineering and premium materials, this kit delivers.
- CNC machined aluminium
- Stainless steel plug
- Viton sealing ring
- Higher price for materials
- Limited to universal fit
GREATUS Differential Axle Breather – 8mm Tubing Advantage
Brand: GREATUS
The GREATUS kit's 8mm tubing provides superior airflow and durability for demanding off-road use.
The GREATUS kit is designed to eliminate the shortcomings of factory breathers by providing a high-flow, zero back pressure, and zero vacuum system. What sets it apart is its use of 8mm polyethylene tubing, which is thicker than the 6mm tubing found in many other kits. This larger diameter allows for better airflow and reduces the risk of kinks or blockages.
The tubing is resistant to oil, water, and heat, ensuring long-lasting performance in tough conditions. The kit is compatible with differentials, transmissions, and transfer cases on most 4×4 vehicles, making it a versatile upgrade. If you want a breather kit that prioritizes airflow and durability, the GREATUS is worth considering.
- 8mm tubing for better flow
- Oil and water resistant
- Zero back pressure design
- May require extra mounting hardware
- Not as compact as others
LM LPXWM Differential Breather Kit – Simple and Effective
Brand: LM LPXWM
The LM LPXWM kit offers simple, effective diff breather protection for most 4×4 vehicles.
The LM LPXWM kit is a straightforward solution for venting air pressure from your differentials, transmission, and transfer case. It uses a central high-flow air filter and manifold to route up to four drivetrain components to a single, elevated location, keeping water out while allowing pressure to escape.
This kit is ideal for most 4×4 and 4WD off-road vehicles, and its design focuses on preventing component damage by adding ventilation holes and heat sinks for better heat dissipation. It’s a no-frills option that gets the job done without unnecessary complexity. If you’re looking for a reliable, easy-to-install breather kit, this is a solid choice.
- Easy to install
- Vents up to four components
- Effective heat dissipation
- Basic design
- No extra features
BoCID Universal 4 Point Diff Breather – Toyota and Nissan Fit
Brand: BoCID
The BoCID kit is a tailored solution for Toyota and Nissan 4x4s, offering reliable ventilation.
The BoCID kit is a universal 4-point diff breather that’s specifically compatible with popular Toyota and Nissan models, including Landcruiser, Hilux, Prado, Patrol, and Navara. It uses an ARB compressor air filter design to provide high-flow, zero back pressure ventilation for your drivetrain.
This kit is designed for easy installation, with all necessary components included. It vents air pressure from differentials, transmissions, and transfer cases, preventing water ingress and pressure buildup. If you drive a Toyota or Nissan 4×4 and want a kit that’s tailored to your vehicle, the BoCID is a great fit.
- Compatible with Toyota and Nissan
- ARB-style filter design
- Easy installation
- Limited to specific brands
- May need adapter for some models
Avutrel Differential Axle Breather – Professional Grade
Brand: Avutrel
The Avutrel kit offers professional-grade durability and performance for serious off-roaders.
The Avutrel kit is a professional-grade diff breather that fits the ARB 170112 specification. It uses 8mm polyethylene tubing that is resistant to high temperature, water, and oil, ensuring a long service life even in harsh conditions. This thicker tubing provides better airflow and durability compared to standard 6mm options.
The kit is designed to eliminate air pressure in differentials, transmissions, and transfer boxes, preventing water contamination and seal damage. It’s made by a professional manufacturer, so you can trust the quality and fit. If you want a breather kit that’s built to last, the Avutrel is a strong contender.
- 8mm tubing
- High temp and oil resistant
- Professional manufacturing
- May be more expensive than budget kits
- Requires careful routing
Zuomeng Differential Breather Kit – For Extreme Conditions
Brand: Zuomeng
The Zuomeng kit is designed for extreme off-road use, offering professional-grade ventilation and protection.
The Zuomeng kit is built for cross-country conquerors who tackle mountain trails, desert crossings, and muddy explorations. It’s designed to timely discharge air pressure from your drivetrain, preventing pressure buildup that can force water past seals. The central high-flow air filter and manifold allow up to four driveline components to vent to a central, elevated location.
This kit also focuses on preventing component damage by adding ventilation holes and heat sinks for better heat dissipation during long drives. It’s a professional-performance option for those who demand the ultimate from their gear. If you push your vehicle to the limit, the Zuomeng kit is up to the task.
- High-flow central filter
- Vents up to four components
- Heat dissipation features
- Premium price
- Installation may be complex
DZQPPC Rear Differential Breather Vent – Compact 2-Pack
Brand: DZQPPC
The DZQPPC 2-pack is a simple, effective solution for replacing factory breather vents on Toyota and Lexus vehicles.
The DZQPPC kit is a compact 2-pack of rear differential breather vents, perfect for vehicles like the Toyota Tacoma, 4Runner, and Land Cruiser. These breather valves are designed to let air escape when internal pressure rises, preventing seal damage and water ingress. They’re compatible with a wide range of Toyota and Lexus models.
This kit is suitable for use with transmissions, differentials, speed reducers, axles, and gear housings, making it a versatile option. The overpressure protection ensures your drivetrain stays safe during intense off-road sessions. If you need a simple, direct replacement for your factory breather, this 2-pack is a convenient and affordable choice.
- Compact 2-pack
- Wide Toyota/Lexus compatibility
- Overpressure protection
- Only covers two components
- Not a full kit
Buyer’s Guide: What to Consider
Choosing the right diff breather kit involves more than just picking a brand. You need to consider your vehicle’s drivetrain layout, the conditions you’ll drive in, and the quality of the kit. Here are five key factors to keep in mind when making your decision.
- Number of Vented Components: Consider how many drivetrain assemblies you need to vent. Most kits handle four (front and rear diffs, transmission, transfer case), but some are limited to two. If you have a full-time 4WD, a 4-point kit is ideal. For part-time 4WD, a 2-point kit may suffice, but future-proofing with a 4-point kit is wise.
- Hose Diameter: Hose diameter affects airflow and durability. Standard is 6mm, but some kits use 8mm tubing, which offers better flow and is less prone to kinking. Thicker tubing also resists heat and oil better, making it a good choice for extreme conditions. Check your vehicle's existing fittings to ensure compatibility.
- Filter Material: The air filter is crucial for keeping water and dust out. Most kits use a plastic or nylon filter, but some use stainless steel for added durability and corrosion resistance. If you drive in saltwater or muddy environments, a stainless filter is a worthwhile upgrade.
- Build Quality and Materials: Look for kits with aluminum or stainless steel components, as they resist corrosion and last longer. CNC-machined parts ensure a precise fit and prevent leaks. Sealing rings made of Viton or similar materials offer better temperature resistance. A well-built kit will save you from future headaches.
- Ease of Installation: Some kits come with all necessary hardware and are designed for straightforward installation, while others may require additional mounting or routing. Consider your mechanical skills and the tools you have. Kits with pre-cut hoses and clear instructions are easier to install, especially for beginners.
Conclusion
Protecting your drivetrain from water and dust is essential for any off-road enthusiast. A diff breather kit is a small investment that can save you from costly repairs. Whether you choose the proven ARB 170112, the budget-friendly PSLER, or the premium Bevinsee, the key is to pick a kit that matches your vehicle and driving style.
For most off-roaders, the ARB 170112 remains the top choice due to its reliability and performance. However, if you’re on a budget or drive a specific brand, options like the RAYTEEN or BoCID offer excellent value. Whichever you choose, ensure it vents at least four components and uses quality materials. Your drivetrain will thank you.
Erica Steven is the founder and lead writer of WorstBrands, a site dedicated to providing honest and trustworthy reviews about outdoor gear and fashion products.
With a passion for exploring the great outdoors and staying up to date on the latest fashion trends, Erica uses her expertise to provide valuable insights into the products that matter most to her readers.
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