{"product_id":"arb-airlocker-dana30-27spl-3-73-up-s-n","title":"ARB Dana 30 Selectable Air Locker - 3.73 \u0026 Up, 27 Spline","description":"\u003cp\u003eThe ARB Air Locker for Dana 30 axles \u003cmeta charset=\"utf-8\"\u003eis engineered with forged alloy components, a fully machined nodular iron case, and ARB’s patented timed locking system. With the flip of a dash mounted switch, compressed air instantly engages the locking mechanism, tying both axle shafts directly to the ring gear for maximum traction in the toughest off-road conditions. When disengaged, it operates exactly like a factory open differential—quiet, predictable, and street friendly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eARB Dana 30 Air Locker differential assembly\u003c\/li\u003e\n\u003cli\u003eDash-mounted activation switch\u003c\/li\u003e\n\u003cli\u003eSolenoid valve\u003c\/li\u003e\n\u003cli\u003eNylon air line\u003c\/li\u003e\n\u003cli\u003eBulkhead fitting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote: \u003c\/strong\u003e\u003ca href=\"\/products\/arb-compressor-twin-12v\"\u003eAir compressor\u003c\/a\u003e required for operation (sold separately).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cul\u003e\n\u003cli\u003eAxle Model: Dana 30\u003c\/li\u003e\n\u003cli\u003eSpline Count: 27-spline\u003c\/li\u003e\n\u003cli\u003eGear Ratio Compatibility: 3.73 \u0026amp; Up\u003c\/li\u003e\n\u003cli\u003eDifferential Type: Selectable locking differential\u003c\/li\u003e\n\u003cli\u003eCase Material: Nodular iron\u003c\/li\u003e\n\u003cli\u003eGear Material: Forged nickel alloy steel\u003c\/li\u003e\n\u003cli\u003eOperation: Pneumatic (air-actuated)\u003c\/li\u003e\n\u003cli\u003eActivation: Dash mounted switch\u003cmeta charset=\"utf-8\"\u003e \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eVerify axle spline count prior to ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable style=\"border: 1px solid rgb(204, 204, 204); border-collapse: collapse; width: 99.9802%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"background-color: rgb(0, 0, 0); color: rgb(255, 255, 255); text-align: center; border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003eYear\u003c\/th\u003e\n\u003cth style=\"background-color: rgb(0, 0, 0); color: rgb(255, 255, 255); text-align: center; border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"background-color: rgb(0, 0, 0); color: rgb(255, 255, 255); text-align: center; border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eModel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e1966-1971\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eFord\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eBronco\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e1971-1983\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eJeep\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eCJ5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e1971-1975\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eJeep\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eCJ6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e1976-1986\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eJeep\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eCJ7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e1981-1985\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eJeep\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eScrambler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e1981-1983\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eJeep\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eWagoneer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e1983-2001\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eJeep\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eCherokee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e1986-1992\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eJeep\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eComanche\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e1987-2023\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eJeep\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eWrangler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e1993-2004\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eJeep\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eGrand Cherokee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e1997-2006\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eJeep\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eTJ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e2002-2012\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eJeep\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eLiberty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 33.96%;\"\u003e2018\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 20.2019%;\"\u003eJeep\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 8px; width: 45.8025%;\"\u003eWrangler JK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eTech Insight\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp\u003eARB’s Air Locker stands apart through its patented clutch gear and timed locking system, which actively supports side gear teeth under load, which allows higher torque handling exactly when traction demand is greatest.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKey engineering advantages include:\u003c\/li\u003e\n\u003cli\u003eTwo-piece design with minimal moving parts for extreme durability\u003c\/li\u003e\n\u003cli\u003eWave spring return system using multiple internal springs for fast, positive disengagement without external actuators\u003c\/li\u003e\n\u003cli\u003eForged pinion and side gears with optimized tooth geometry offering up to 30% greater strength than comparable high-strength gears\u003c\/li\u003e\n\u003cli\u003eSteel-reinforced, elastomer-bonded annular seal proven through 20,000+ engagement cycles in extreme climates\u003c\/li\u003e\n\u003cli\u003eOne-piece machined nodular iron case with double the standard number of pinion gears for superior torque distribution\u003c\/li\u003e\n\u003cli\u003eThis design delivers consistent locking performance while maintaining long-term reliability in both competition and hardcore trail use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"ARB","offers":[{"title":"Default Title","offer_id":52986640433517,"sku":"ARBRD100","price":1299.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/1145\/3037\/files\/RD100-ARB-Air-Locker-Differential-Dana-30-1.jpg?v=1780510975","url":"https:\/\/craneaxle.com\/products\/arb-airlocker-dana30-27spl-3-73-up-s-n","provider":"Crane Axle","version":"1.0","type":"link"}