{"product_id":"arb-differential-breather-kit-high-flow-4-port-manifold-with-elevated-filter-zero-back-pressure","title":"ARB Differential Breather Kit — High-Flow 4-Port Manifold with Elevated Filter, Zero Back-Pressure","description":"\u003cp\u003e\u003cstrong\u003eARB’s Differential Breather Kit (170112) is a high-flow, four-port manifold system that vents up to four drivetrain assemblies to one elevated filter to reduce water ingestion and eliminate back pressure.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen off-road driving or water crossings raise the temperature and pressure inside differentials, gearboxes and transfer cases, a proper breather prevents contaminated fluid and seal failure. The ARB Differential Breather Kit centralizes vents to a single, high-mounted air filter and manifold engineered for maximum airflow with zero back pressure or vacuum, helping keep lubricant clean and components functioning longer.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the ARB breather system protect drivetrain components?\u003c\/h3\u003e\n\u003cp\u003eThe kit directs expanding air and vapors from multiple gearbox and axle housings into a single elevated filter, blocking water entry and reducing internal pressure spikes. Unlike simple caps, this design maintains neutral pressure without restricting airflow.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eManifold accepts up to four breather lines, consolidating vents at one high point.\u003c\/li\u003e\n  \u003cli\u003eHigh-flow air filter prevents water and large contaminants from entering vents.\u003c\/li\u003e\n  \u003cli\u003eZero back pressure design avoids stressing seals during thermal cycles.\u003c\/li\u003e\n  \u003cli\u003eElevated mounting position reduces risk of water immersion during crossings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the ARB 170112 kit and what do I need to install it?\u003c\/h3\u003e\n\u003cp\u003eThe package includes everything to plumb four breathers to the central manifold and secure the filter in a convenient, raised location. Basic hand tools and a few minutes per breather are all that’s typically required for a tidy installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eManifold block with four ports and one filter port for a consolidated layout.\u003c\/li\u003e\n  \u003cli\u003eHigh-flow air filter assembly plus push-in fittings, tubing, plugs and screws.\u003c\/li\u003e\n  \u003cli\u003eCable ties and mounting hardware to route and secure lines neatly.\u003c\/li\u003e\n  \u003cli\u003eInstructions for positioning the filter high on the chassis to avoid water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this breather kit fit my vehicle and drivetrain layout?\u003c\/h3\u003e\n\u003cp\u003eThe ARB manifold is universal for most automotive differentials, transfer cases and gearboxes, providing flexible placement of up to four breather lines. Verify hose routing length and mounting clearance for the filter to ensure a clean, elevated install on your chassis.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuitable for most axles, transfer cases and gearboxes needing remote venting.\u003c\/li\u003e\n  \u003cli\u003eFour-port capacity allows a single central filter for multiple components.\u003c\/li\u003e\n  \u003cli\u003eFlexible tubing and push-in fittings adapt to common vehicle layouts.\u003c\/li\u003e\n  \u003cli\u003eCheck clearances and preferred mounting points before final routing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does installing this kit change maintenance or performance?\u003c\/h3\u003e\n\u003cp\u003eOnce installed, the kit reduces the chance of water contamination and excessive internal pressure, helping seals and oil remain in good condition longer. It’s low-maintenance: the filter is serviceable and only needs occasional inspection after heavy mud or water exposure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLower risk of oil contamination during water crossings or deep mud.\u003c\/li\u003e\n  \u003cli\u003eReduced stress on seals during hot-cold cycles due to neutral venting.\u003c\/li\u003e\n  \u003cli\u003ePeriodic filter checks and cleaning keep the system effective.\u003c\/li\u003e\n  \u003cli\u003eSimple replacement parts: tubing, fittings and filter if needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The ARB Differential Breather Kit is aimed at off-road enthusiasts, overlanders and anyone who regularly encounters water, mud or dusty conditions and wants a reliable, high-flow venting solution for multiple drivetrain components. It’s ideal for builders consolidating several breathers into one elevated, serviceable location and for vehicle owners who prefer a robust, low-restriction alternative to stock breather caps.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can one ARB manifold vent multiple differentials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The ARB manifold supports up to four breather lines, allowing several differentials, transfer cases or gearboxes to vent to a single high-mounted filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I check the ARB breather filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Inspect the filter after heavy mud, water crossings or every few thousand miles; clean or replace it when clogged or visibly contaminated.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ARB","offers":[{"title":"Default Title","offer_id":55170579071319,"sku":"B00QBQYNF0","price":113.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/arb-differential-breather-kit-front-packaging.jpg?v=1790431231","url":"https:\/\/britishgarage.co.uk\/products\/arb-differential-breather-kit-high-flow-4-port-manifold-with-elevated-filter-zero-back-pressure","provider":"British Garage","version":"1.0","type":"link"}