{"product_id":"yukon-gear-master-overhaul-kit-for-jeep-wrangler-jl-dana-30-186mm-front-diff-w-o-axle-seals","title":"Yukon Gear Master Overhaul Kit For Jeep Wrangler JL Dana 30 186mm Front Diff w\/o Axle Seals","description":"\u003ch4\u003eYukon Gear Complete Differential Rebuild Kit for the Dana 30 186mm Front\u003c\/h4\u003e\n\u003cp\u003eThe \u003cstrong\u003eYK D30JL-FRONT\u003c\/strong\u003e Yukon Gear Master Overhaul Kit contains every component required to perform a complete rebuild of the Dana 30 186mm Front differential found in the Jeep Wrangler JL. Built around industry-leading Timken bearings and precision-engineered seals, this kit delivers the accuracy and durability that professional rebuilders and serious off-road enthusiasts depend on. Yukon Gear engineers have tailored this kit specifically for this application, and it does not include axle seals so it is the correct kit for the standard JL Dana 30 186mm configuration.\u003c\/p\u003e\n\u003ch4\u003eFeatures and Benefits\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimken Bearings and Races\u003c\/strong\u003e - Both carrier and pinion bearing sets sourced from Timken for precise load-handling and long service life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Shim Set\u003c\/strong\u003e - Full range of shims for accurate pinion depth and carrier bearing preload setup on the first attempt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Pinion Seal\u003c\/strong\u003e - Engineered to prevent fluid contamination and leaks under extreme load and temperature cycles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Gear Bolts and Pinion Nut\u003c\/strong\u003e - Grade-correct fasteners included so nothing is left to chance during assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrush Sleeve\u003c\/strong\u003e - Correct crush sleeve for proper pinion bearing preload in this application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Locker and Marking Compound\u003c\/strong\u003e - Setup consumables included so the technician can verify gear contact pattern and secure fasteners\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication-Specific Engineering\u003c\/strong\u003e - Yukon conducts extensive research to ensure all parts match exact tolerances for the Dana 30 186mm Front\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Year Limited Warranty\u003c\/strong\u003e - Backed against manufacturer defects for twelve months from the date of purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eVehicle Fitment\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eTrim\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eSport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eSport S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eSport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eSport S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2020\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eSport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2020\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eSport S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eSport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eSport S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2022\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eSport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2022\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eSport S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2023\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eSport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2023\u003c\/td\u003e\n\u003ctd\u003eJeep\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd\u003eSport S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eProduct Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eYK D30JL-FRONT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e883584153733\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDifferential\u003c\/td\u003e\n\u003ctd\u003eDana 30 186mm Front\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRing Gear Size\u003c\/td\u003e\n\u003ctd\u003e7.17 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarrier Bearings\u003c\/td\u003e\n\u003ctd\u003eTimken carrier bearing set with races\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePinion Bearings\u003c\/td\u003e\n\u003ctd\u003eTimken inner and outer pinion bearing set with races\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeals Included\u003c\/td\u003e\n\u003ctd\u003ePinion seal (no axle seals)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShim Set\u003c\/td\u003e\n\u003ctd\u003eComplete carrier and pinion depth shim range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrush Sleeve\u003c\/td\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 Year Limited Manufacturer Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYukon Gear and Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhat Is Included\u003c\/h4\u003e\n\u003cp\u003eThe YK D30JL-FRONT kit includes all components listed below for a complete differential overhaul.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTimken carrier bearings with races (inner and outer)\u003c\/li\u003e\n\u003cli\u003eTimken pinion bearings with races (inner and outer)\u003c\/li\u003e\n\u003cli\u003ePinion seal\u003c\/li\u003e\n\u003cli\u003eComplete shim kit (carrier and pinion depth shims)\u003c\/li\u003e\n\u003cli\u003eRing gear bolts (full set)\u003c\/li\u003e\n\u003cli\u003ePinion nut\u003c\/li\u003e\n\u003cli\u003eCrush sleeve\u003c\/li\u003e\n\u003cli\u003eThread-locking compound\u003c\/li\u003e\n\u003cli\u003eMarking compound with application brush\u003c\/li\u003e\n\u003cli\u003eCover gasket\u003c\/li\u003e\n\u003cli\u003eNote: Axle seals are not included in this kit configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does installing this kit void my vehicle warranty?\u003c\/strong\u003e\u003cbr\u003e\nA: Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your vehicle warranty simply because you installed an aftermarket part. They must demonstrate that the aftermarket part caused the specific failure. High-quality components like those in \u003cstrong\u003eYK D30JL-FRONT\u003c\/strong\u003e protect your drivetrain investment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does this kit include a crush sleeve?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. A crush sleeve engineered for the Dana 30 186mm front differential is included for proper pinion bearing preload without sourcing additional parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Why does this kit not include axle seals?\u003c\/strong\u003e\u003cbr\u003e\nA: The YK D30JL-FRONT is designed for the standard JL Wrangler Dana 30 186mm differential rebuild without axle seal replacement. This is the correct configuration for most differential rebuilds where axle seals are serviced separately or are not required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What special tools are required?\u003c\/strong\u003e\u003cbr\u003e\nA: You will need a pinion bearing press and puller set, torque wrench, inch-pound torque wrench for preload measurement, bearing race driver set, dial indicator for backlash measurement, and a gear marking compound brush.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Will this kit work with aftermarket ring and pinion gears?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. The shim set covers the full adjustment range whether you are reinstalling factory gears or fitting a new aftermarket gear ratio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Are Timken bearings better than standard replacement bearings?\u003c\/strong\u003e\u003cbr\u003e\nA: Timken is an industry leader in tapered roller bearing manufacturing. Their bearings exceed OEM specifications for radial and axial load capacity, making them ideal for off-road differential rebuilds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What does the warranty on \u003cstrong\u003eYK D30JL-FRONT\u003c\/strong\u003e cover?\u003c\/strong\u003e\u003cbr\u003e\nA: Yukon Gear covers defects in materials and workmanship for twelve months from the date of original purchase. Normal wear and improper installation are not covered.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can a home mechanic complete this rebuild?\u003c\/strong\u003e\u003cbr\u003e\nA: An experienced home mechanic with proper tools can complete the job, but professional installation is recommended to ensure correct gear lash, preload, and contact pattern setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInstallation Overview\u003c\/h4\u003e\n\u003cp\u003eFollow these steps to install the YK D30JL-FRONT master overhaul kit.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eLift the vehicle safely and drain the differential fluid completely.\u003c\/li\u003e\n\u003cli\u003eRemove the front axle shafts and disconnect the differential housing.\u003c\/li\u003e\n\u003cli\u003eMark the bearing caps and remove the carrier assembly, noting all shim locations.\u003c\/li\u003e\n\u003cli\u003eDrive out the pinion, removing old bearings, races, and seal.\u003c\/li\u003e\n\u003cli\u003ePress in new Timken pinion bearing races using a race driver set.\u003c\/li\u003e\n\u003cli\u003ePress the new inner Timken pinion bearing onto the pinion shaft and install the new crush sleeve.\u003c\/li\u003e\n\u003cli\u003eInstall the pinion into the housing, add the outer pinion bearing, and torque the pinion nut while monitoring preload until specification is achieved.\u003c\/li\u003e\n\u003cli\u003eInstall new carrier bearings on the carrier, reinstall with original shim stack, and verify backlash with a dial indicator.\u003c\/li\u003e\n\u003cli\u003eApply marking compound and check gear contact pattern. Adjust shims until pattern is centered on the drive face.\u003c\/li\u003e\n\u003cli\u003eApply thread locker to ring gear bolts and torque to specification.\u003c\/li\u003e\n\u003cli\u003eInstall the new pinion seal and reinstall carrier bearing caps to specification.\u003c\/li\u003e\n\u003cli\u003eClean and reinstall the differential cover with included gasket.\u003c\/li\u003e\n\u003cli\u003eFill with correct gear oil to fill plug level and road-test the vehicle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to \u003ca href=\"https:\/\/www.p65warnings.ca.gov\"\u003ewww.p65warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e","brand":"Yukon Gear \u0026 Axle","offers":[{"title":"Default Title","offer_id":40481879162959,"sku":"YUKYK D30JL-FRONT","price":450.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/yukon-gear-master-overhaul-kit-for-jeep-wrangler-jl-dana-30-186mm-front-diff-wo-axle-seals-differential-overhaul-kits-yukon-gear-axle.jpg?v=1699976350","url":"https:\/\/www.blackopsautoworks.com\/products\/yukon-gear-master-overhaul-kit-for-jeep-wrangler-jl-dana-30-186mm-front-diff-w-o-axle-seals","provider":"Black Ops Auto Works","version":"1.0","type":"link"}