ARB Differential Breather Kit

ARB Differential Breather Kit For 4WD Drivetrain Breather Systems, Including 1979–1995 Toyota Pickup & 1984–1995 Toyota 4Runner Applications Overview The ARB Differential Breather Kit is a centralized drivetrain breather system designed to relocate factory differential, transmission, and transfer-case breathers to a higher, cleaner location. This helps reduce the risk of water, dust, mud, and other contaminants entering drivetrain housings during off-road driving, water crossings, and dusty conditions. The system uses a four-port manifold and filtered breather to provide a high-flow, zero-back-pressure and zero-vacuum breather arrangement. The supplied tubing and fittings are sufficient to connect at least two drivetrain assemblies, while additional tubing and fittings can expand the system to as many as four breather lines. Its universal design makes it particularly useful for 1979–1995 Toyota Pickup and 1984–1995 Toyota 4Runner builds where differential and drivetrain breather relocation is desired for off-road use, restoration, or drivetrain protection. Key Features Genuine ARB differential breather system Four-port centralized breather manifold Supports 1–4 drivetrain breather lines Includes tubing and fittings for at least two drivetrain assemblies High-flow, zero-back-pressure and zero-vacuum design Splash-resistant filtered breather Compact anodized billet-aluminum manifold Suitable for differentials, transmissions, and transfer cases when properly configured Expandable with additional ARB tubing and push-in fittings ARB 3-year warranty Drivetrain Protection Differentials, transmissions, and transfer cases experience pressure changes as drivetrain temperatures rise and fall. Factory breather valves allow this pressure to equalize, but their original mounting locations can leave drivetrain assemblies more exposed to water, dirt, and dust during off-road use. The ARB Differential Breather Kit relocates compatible breathers to a higher, cleaner mounting point and routes them through a centralized filtered manifold. This allows the connected drivetrain assemblies to breathe while helping reduce the possibility of contaminants entering through the original breather locations. The manifold and filter should be mounted at a protected high point on the vehicle, such as an appropriate under-hood or interior location. Toyota Pickup & 4Runner Application Although the ARB Differential Breather Kit is a universal system rather than a vehicle-specific bolt-on kit, it is well suited for 4WD Toyota Pickup and 4Runner builds where the factory differential and drivetrain breathers are being extended. For 1979–1995 Toyota Pickup and 1984–1995 Toyota 4Runner applications, the kit can be configured to route compatible factory breathers upward to the ARB manifold. A common setup uses the supplied components for the front and rear differentials, while additional tubing and fittings can be added when incorporating the transmission or transfer case. Exact hose routing, fitting compatibility, and manifold placement depend on the vehicle's axle and drivetrain configuration. Modified axles, transmission swaps, transfer-case conversions, and other drivetrain changes may require different fittings or installation methods. Vehicle Fitment Universal 4WD Drivetrain Application Suitable for vehicles equipped with vented drivetrain housings that can be adapted to the ARB breather system. Toyota Pickup 1979–1983 Toyota Pickup – 1st Generation 1984–1988 Toyota Pickup – 2nd Generation 1989–1995 Toyota Pickup – 3rd Generation Toyota 4Runner 1984–1989 Toyota 4Runner – 1st Generation 1990–1995 Toyota 4Runner – 2nd Generation These Toyota applications should be treated as universal/custom installations, not as vehicle-specific direct bolt-on fitment. Fitment Notes Designed for drivetrain breather relocation Suitable for compatible differentials, transmissions, and transfer cases Includes enough tubing and fittings for at least two drivetrain assemblies Four manifold ports allow expansion to as many as four breather lines Additional ARB tubing and push-in fittings are available separately Manifold should be mounted in a high, protected location Exact fitting requirements vary by drivetrain and axle configuration Modified or swapped axles and drivetrains may require different fittings Verify factory breather thread and connection type before installation Universal/custom installation Product Specifications Brand: ARB Product Type: Differential / Drivetrain Breather Kit Manifold Material: Anodized Billet Aluminum Breather Ports: 4 Supported Breather Lines: 1–4 Filter: Splash Resistant Installation: Universal / Custom Warranty: 3 Years What's Included Centralized ARB breather manifold Filtered breather Heat-resistant hose Installation fittings sufficient to connect at least two drivetrain assemblies Additional hose and fittings can be purchased separately when expanding the system to additional drivetrain components.