{"product_id":"arb-airlocker-amc-model-20-2-73-dn-s-n","title":"ARB AMC Model 20 Selectable Air Locker - 29 Spline","description":"\u003cp\u003eThe ARB Air Locker Differential for AMC Model 20 uses\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e a pneumatically operated locking system, the lockable differential completely locks the differential when activated, preventing internal gears from rotating independently. This forces both axle shafts to turn together, delivering maximum traction in rocks, mud, snow, and uneven terrain. When switched off, the differential functions like a conventional open unit, making it ideal for mixed street and trail use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eARB AMC Model 20 Air Locker Differential\u003c\/li\u003e\n\u003cli\u003eDash activation switch\u003c\/li\u003e\n\u003cli\u003eSolenoid valve\u003c\/li\u003e\n\u003cli\u003eAir line\u003c\/li\u003e\n\u003cli\u003eBulkhead fitting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote: \u003c\/strong\u003eAir compressor required for operation (sold separately).\u003cbr\u003e\u003c\/p\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 width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\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\u003eDifferential Type: Selectable Air Locker\u003c\/li\u003e\n\u003cli\u003eAxle Type: AMC Model 20\u003c\/li\u003e\n\u003cli\u003eMaterial: Steel\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesign: Two-piece carrier\u003c\/li\u003e\n\u003cli\u003eActivation: Pneumatic (air-operated)\u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003e\u003cstrong\u003eFront Axle (IFS – AMC 20)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAxle: AMC 20 (8.875\")\u003c\/li\u003e\n\u003cli\u003ePosition: Front\u003c\/li\u003e\n\u003cli\u003eSpline: 29\u003c\/li\u003e\n\u003cli\u003eShaft Diameter: 1.25\"\u003c\/li\u003e\n\u003cli\u003eGear Ratios Supported:\u003c\/li\u003e\n\u003cli\u003e2.73 \u0026amp; Down\u003c\/li\u003e\n\u003cli\u003e3.08 \u0026amp; Up\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRear Axle (IRS – AMC 20)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAxle: AMC 20 (8.875\")\u003c\/li\u003e\n\u003cli\u003ePosition: Rear\u003c\/li\u003e\n\u003cli\u003eSpline: 29\u003c\/li\u003e\n\u003cli\u003eShaft Diameter: 1.25\"\u003c\/li\u003e\n\u003cli\u003eGear Ratios Supported:\u003c\/li\u003e\n\u003cli\u003e2.73 \u0026amp; Down\u003c\/li\u003e\n\u003cli\u003e3.08 \u0026amp; Up\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRear Axle (Model 20 – Solid Axle)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAxle: AMC Model 20\u003c\/li\u003e\n\u003cli\u003ePosition: Rear\u003c\/li\u003e\n\u003cli\u003eSpline: 29\u003c\/li\u003e\n\u003cli\u003eShaft Diameter: 1.25\"\u003c\/li\u003e\n\u003cli\u003eGear Ratios Supported:\u003c\/li\u003e\n\u003cli\u003e2.73 \u0026amp; Down\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote: \u003c\/strong\u003eGear ratio breaks are carrier-specific. Always verify your current ratio before ordering.\u003c\/p\u003e\n\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 width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAM General\u003c\/td\u003e\n\u003ctd\u003eHummer\u003c\/td\u003e\n\u003ctd\u003e1992–2001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHummer\u003c\/td\u003e\n\u003ctd\u003eH1\u003c\/td\u003e\n\u003ctd\u003e2002–2006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eCJ5\u003c\/td\u003e\n\u003ctd\u003e1976–1983\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eCJ7\u003c\/td\u003e\n\u003ctd\u003e1976–1986\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eJ10\u003c\/td\u003e\n\u003ctd\u003e1980–1988\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eScrambler\u003c\/td\u003e\n\u003ctd\u003e1981–1985\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWagoneer\u003c\/td\u003e\n\u003ctd\u003e1979–1986\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 width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp\u003eARB’s patented timed locking mechanism allows ultra fast disengagement under load, reducing driveline stress while maintaining exceptional strength. The two-piece carrier design minimizes internal moving parts for maximum reliability, while the steel is engineered to perform in extreme climates and harsh off-road conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"ARB","offers":[{"title":"Default Title","offer_id":52986640531821,"sku":"ARBRD187","price":1299.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/1145\/3037\/files\/38faf1029ab3b0f4d690f43cec1749bb.jpg?v=1780426051","url":"https:\/\/craneaxle.com\/products\/arb-airlocker-amc-model-20-2-73-dn-s-n","provider":"Crane Axle","version":"1.0","type":"link"}