{"product_id":"air-locker-differential-ford-9-competition-copy","title":"Air Locker Differential Dana 70\/80","description":"\u003cdiv id=\"isPasted\" style=\"box-sizing: inherit; color: rgb(44, 62, 80); font-family: Superscripts-Roboto, Roboto, 'Noto Sans TC', 'Noto Sans SC', 'Noto Sans JP', 'Noto Sans KR', Prompt, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\n\u003ch3\u003eThe Ultimate Towing Traction: Lock Your 1-Ton Axle for Serious Duty.\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/D-3u0clyVfM?si=C131EKDydk5rP6x7\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp data-path-to-node=\"6\"\u003eWhen you are piloting a Ford F-350 Super Duty or a heavy-duty Ram, you are relying on massive torque to move massive weight. Unfortunately, the factory limited-slip differentials in these Dana 70 and Dana 80 rear ends often wear out or fail to provide true two-wheel drive when you are stuck in mud with a loaded gooseneck. The ARB RD174 is the solution: a competition-grade locking differential built to handle the extreme abuse of 1-ton trucks.\u003c\/p\u003e\n\u003cp data-path-to-node=\"7\"\u003eAt Overland Truck Store, we recommend this locker for the heaviest builds—whether you are hauling a slide-in camper, towing heavy machinery, or building a dedicated recovery rig. Unlike automatic lockers that can cause dangerous handling quirks while towing on the highway, the ARB Air Locker remains completely open for smooth, predictable street driving. But when you hit the switch, it instantly locks your massive 37-spline shafts together, ensuring every foot-pound of torque reaches the ground.\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003eThis unit features a heavy-duty two-piece case and forged internal gears designed specifically to cope with the shock loads of high-torque diesel engines and 40+ inch tires.\u003c\/p\u003e\n\u003cp data-path-to-node=\"9\"\u003e\u003cb\u003eFeatures \u0026amp; Specs:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"10\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,0\"\u003e\u003cb\u003eApplication:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"10,0,1\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,1,0,0\"\u003e\u003cb\u003eFord:\u003c\/b\u003e F-350 Super Duty (1999-2016)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,1,2,0\"\u003e\u003cb\u003eOther:\u003c\/b\u003e Ford E-350 \/ E-450 Vans (Check specific years\/axles)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,1,0\"\u003e\u003cb\u003eAxle Fitment:\u003c\/b\u003e Fits \u003cb\u003eDana 70\u003c\/b\u003e and \u003cb\u003eDana 80\u003c\/b\u003e rear axles.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,2,0\"\u003e\u003cb\u003eSpline Count:\u003c\/b\u003e Requires \u003cb\u003e37 Spline\u003c\/b\u003e axle shafts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,3,0\"\u003e\u003cb\u003eCarrier Break:\u003c\/b\u003e Typically fits ratios \u003cb\u003e4.10 and numerically higher\u003c\/b\u003e (e.g., 4.56, 4.88, 5.13).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,4,0\"\u003e\u003cb\u003ePerformance:\u003c\/b\u003e Provides 100% traction on demand without sacrificing towing stability or tire wear.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"11\"\u003e\u003cb\u003eInstaller Note:\u003c\/b\u003e This is a massive locker for \u003cb\u003e37-spline\u003c\/b\u003e axles only. Many standard Dana 70s came with 32 or 35 splines, and some Dana 80s vary. You \u003cb\u003emust\u003c\/b\u003e confirm your spline count and gear ratio carrier break before ordering. Installation requires a dedicated air compressor (sold separately).\u003c\/p\u003e\n\u003cp data-path-to-node=\"11\"\u003e\u003cimg\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0565\/2463\/6203\/files\/Screenshot_2025-12-22_121003.png?v=1766434231\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARB","offers":[{"title":"Default Title","offer_id":42593959084075,"sku":"RD174","price":1499.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0565\/2463\/6203\/files\/AirLockerDifferentialDana7080_5.webp?v=1766433525","url":"https:\/\/overlandtruckstore.myshopify.com\/products\/air-locker-differential-ford-9-competition-copy","provider":"Overland Truck Store","version":"1.0","type":"link"}