{"product_id":"usa-standard-master-overhaul-kit-for-the-ford-9in-lm501310-diff","title":"Yukon ZK F9-B Ford 9in LM501310 Big Bearing Kit for Nodular 3.250in Diffs","description":"\u003ch4\u003eVehicle Fitment\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eFord 9\" third member differentials using LM501310 carrier bearing races (3.250\" O.D. \"big bearing\")\u003c\/li\u003e \u003cli\u003eFactory nodular (\"N\"-marked) Ford 9\" center sections, generally associated with higher-performance and heavy-duty original-equipment applications from the late 1960s through the 1970s\u003c\/li\u003e \u003cli\u003eWidely used in aftermarket nodular 3.250\" third members from builders such as Currie, Dana Spicer, and Strange, popular in Bronco, F-100\/F-150, and classic Ford muscle car builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment Notes\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eFitment is determined entirely by carrier bearing race size (LM501310, 3.250\" O.D.), not by vehicle year or model - measure or identify your carrier bearing before ordering, since factory Ford 9\" units and many aftermarket third members mix both the 3.250\" and the smaller 3.062\" carrier bearing sizes\u003c\/li\u003e \u003cli\u003eI was not able to confirm a specific, reliable factory vehicle-by-year application list for this bearing size from independent sources, so none is presented here - if you need confirmation for a specific factory vehicle, verify directly with Yukon\/USA Standard Gear or by measuring your differential's carrier bearing\u003c\/li\u003e \u003cli\u003eA separate kit is required for Ford 9\" units with a Daytona pinion support housing versus a stock pinion support housing - confirm which your third member uses\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFeatures\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eComplete master overhaul kit for the Ford 9\" differential with LM501310 (3.250\" O.D.) carrier bearing races\u003c\/li\u003e \u003cli\u003eIncludes a pilot bearing in addition to standard carrier and pinion bearings\u003c\/li\u003e \u003cli\u003eIncludes a complete pinion shim kit for accurate gear setup\u003c\/li\u003e \u003cli\u003eIncludes thread locking compound and marking compound for a verifiable, correctly-set install\u003c\/li\u003e \u003cli\u003eBundles all major rebuild consumables into one kit\u003c\/li\u003e \u003cli\u003eManufactured by USA Standard Gear\u003c\/li\u003e \u003cli\u003eSuited for both factory N-case rebuilds and aftermarket 3.250\" nodular third member builds\u003c\/li\u003e \u003cli\u003eSupports gear ratio changes and locker\/posi installations in addition to standard rebuilds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eDifferential: Ford 9\" third member\u003c\/li\u003e \u003cli\u003eCarrier bearing race: LM501310 (3.250\" O.D., \"big bearing\")\u003c\/li\u003e \u003cli\u003eCase type: Factory nodular (\"N\") or compatible aftermarket 3.250\" nodular case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eIncluded Components\u003c\/h4\u003e\u003cul\u003e \u003cli\u003e1x Carrier bearing \u0026amp; race set\u003c\/li\u003e \u003cli\u003e1x Pinion bearing \u0026amp; race set\u003c\/li\u003e \u003cli\u003e1x Pilot bearing\u003c\/li\u003e \u003cli\u003e1x Pinion seal\u003c\/li\u003e \u003cli\u003e1x Complete pinion shim kit\u003c\/li\u003e \u003cli\u003e1x Ring gear bolt set\u003c\/li\u003e \u003cli\u003e1x Pinion nut\u003c\/li\u003e \u003cli\u003e1x Crush sleeve\u003c\/li\u003e \u003cli\u003e1x Thread locking compound\u003c\/li\u003e \u003cli\u003e1x Marking compound with brush\u003c\/li\u003e \u003cli\u003e1x Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Description\u003c\/h4\u003e\u003cp\u003eThe Yukon ZK F9-B is a complete master overhaul kit for the Ford 9\" differential built around the larger LM501310 carrier bearing race - a 3.250\" O.D. \"big bearing\" found in factory nodular (\"N\"-marked) Ford 9\" center sections and widely replicated in aftermarket nodular 3.250\" third members from builders like Currie and Dana Spicer. This bearing size is generally associated with the stronger, more failure-resistant nodular iron cases favored for higher-torque and higher-performance 9\" builds.\u003c\/p\u003e\u003cp\u003eBecause the Ford 9\" comes in multiple carrier bearing sizes across both factory and aftermarket cases, correctly identifying your bearing size - 3.250\" for this kit, versus the smaller 3.062\" used in other 9\" applications - is essential before ordering. This kit bundles everything needed for a full rebuild into one part number: carrier and pinion bearings and races, a pilot bearing, pinion seal, complete shim kit, crush sleeve, ring gear bolts, and the thread locker, marking compound, and gasket needed for a proper reassembly.\u003c\/p\u003e\u003cp\u003eThis is a rebuild-support kit rather than a ring-and-pinion set, so it pairs with either your existing gears or a new gear set when changing ratio. It's a common choice for Bronco, F-100\/F-150, and classic Ford muscle car builds using a nodular 3.250\" third member. Installation involves full disassembly of the differential and proper backlash\/preload setup, so it's best suited for an experienced DIY installer or a differential shop.\u003c\/p\u003e\u003cmeta name=\"description\" content='Upgrade your Ford 9\" differential with the Yukon ZK F9-B rebuild kit. Includes essential components for high-performance applications.'\u003e\u003cmeta name=\"keywords\" content=\"Yukon ZK F9-B kit, Ford 9 inch differential, LM501310 carrier bearing, nodular third member rebuild, high-performance differential kit, Bronco differential parts, F-100 F-150 rebuild kit, aftermarket nodular bearings, complete differential overhaul kit, USA Standard Gear products\"\u003e","brand":"Yukon Gear \u0026 Axle","offers":[{"title":"Default Title","offer_id":53864411398463,"sku":"YUKZK F9-B","price":144.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/7308\/9343\/files\/37fc7c8107585fba625c2ae522c5a772.jpg?v=1782577434","url":"https:\/\/wcaperformance.com\/products\/usa-standard-master-overhaul-kit-for-the-ford-9in-lm501310-diff","provider":"WCA Performance","version":"1.0","type":"link"}