{"product_id":"arb-airlocker-10-bolt-rg-3-54-dn-nissan-r180a-30spl-s-n","title":"ARB Air Locker — Nissan R180A Front 30-Spline (3.54 \u0026 Down)","description":"\u003cp\u003e\u003cstrong\u003eThe ARB Air Locker RD231\u003c\/strong\u003e adds selectable front locking to the \u003cstrong\u003eNissan R180A differential (30-spline, 10-bolt ring gear)\u003c\/strong\u003e. Engage it and an open front axle becomes 100% locked for hill climbs and technical terrain; disengage and it returns to full open-differential operation for safe, predictable steering and street driving.\u003c\/p\u003e\u003cp\u003eSet up for \u003cstrong\u003e3.54 and numerically lower\u003c\/strong\u003e ring-and-pinion ratios, ARB's forged four-pinion centre withstands the extra load of larger tyres. Air-operated engagement is instant and repeatable through an ARB on-board compressor, giving you traction on demand without any full-time locking compromises.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDifferential\u003c\/td\u003e\n\u003ctd\u003eNissan R180A (front)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRing gear fixing\u003c\/td\u003e\n\u003ctd\u003e10-bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpline count\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRatio compatibility\u003c\/td\u003e\n\u003ctd\u003e3.54 \u0026amp; numerically lower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngagement\u003c\/td\u003e\n\u003ctd\u003eAir-operated, driver-selectable (100% locking)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand \/ MPN\u003c\/td\u003e\n\u003ctd\u003eARB \/ RD231\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e Air Lockers are matched to the differential, spline count and ratio range — confirm your front axle is a 30-spline R180A at 3.54 or lower before ordering.\u003c\/p\u003e\u003cp\u003eRequires an ARB air source (on-board compressor or CKMA\/CKMTA kit) and an installation kit. Backed by ARB's limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eProp 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and\/or reproductive harm. See www.P65Warnings.ca.gov.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"\/collections\/arb\"\u003eARB traction \u0026amp; differentials\u003c\/a\u003e.\u003c\/p\u003e","brand":"ARB","offers":[{"title":"Default Title","offer_id":48647948468416,"sku":"arbRD231","price":1299.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0525\/3188\/8320\/files\/11c5509a80cc0554c468efd542e9e108.jpg?v=1784678032","url":"https:\/\/overlandkitted.com\/products\/arb-airlocker-10-bolt-rg-3-54-dn-nissan-r180a-30spl-s-n","provider":"Overland Kitted","version":"1.0","type":"link"}