{"product_id":"yukon-4340-chrome-moly-left-inner-axle-for-jeep-dana-30-durable","title":"Yukon 4340 Chrome-Moly Left Inner Axle for Jeep Dana 30 - Durable","description":"\u003cp\u003eIn this review of the Yukon 4340 Chrome-Moly left inner axle, the bottom line is simple: this is a practical, heavy-duty replacement for Jeep owners who demand greater strength from their Dana 30 front axle. Designed for '84-'90 XJ, '97 and newer TJ, and '87 and newer Wrangler applications, the axle's biggest selling point is its upgraded 4340 chrome-moly construction that delivers up to 50% increased strength over stock, making it a sensible choice for drivers running large tires or higher horsepower setups.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e4340 Chrome-Moly Construction:\u003c\/strong\u003e Provides significantly greater tensile strength and resistance to bending for off-road and high-load use.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect Fit for Dana 30:\u003c\/strong\u003e Built to match the left inner axle requirements for select Jeep XJ and TJ Dana 30 applications to simplify replacement.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e27 Splines:\u003c\/strong\u003e The 27-spline configuration maintains compatibility with Dana 30 spline interfaces used on the specified vehicles.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e16.63 in Length:\u003c\/strong\u003e The specified length ensures correct engagement and geometry for the intended front differential setup.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturing Quality:\u003c\/strong\u003e Produced using modern heat-treating technologies and high-grade alloys for long life under demanding conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLimited Lifetime Warranty:\u003c\/strong\u003e Warranty covers manufacturing defects and axle breakage for as long as the original owner owns the vehicle, providing added confidence.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis axle is aimed at Jeep owners who want a stronger replacement for the Dana 30 inner axle, especially those running larger tires or making power increases that stress the front driveline. Off-road enthusiasts, weekend trail riders, and anyone tackling rock or heavy-duty use will appreciate the increased strength of the 4340 chrome-moly material.\u003c\/p\u003e\n\n\u003cp\u003eIf a driver needs a universal or adjustable length axle, or is restoring a vehicle outside the listed model years or spline counts, they should look elsewhere. Also, customers seeking a fully assembled front axle kit with all hub components included should verify fitment and included parts before purchase.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eNoticeably stronger than stock axles, offering improved durability under load.\u003c\/li\u003e\n \u003cli\u003eDirect fit for specified Jeep Dana 30 applications, simplifying installation for compatible models.\u003c\/li\u003e\n \u003cli\u003eHigh-quality materials and modern heat treatment help extend service life in off-road use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eAssembly quality received mixed feedback from some customers, so inspect components before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYukon Gear \u0026amp; Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e4340 Chrome-Moly\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eLeft inner axle for Jeep Dana 30\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFitment Years\u003c\/td\u003e\n\u003ctd\u003e'84-'90 XJ, '97+ TJ, '87+ Wrangler\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e16.63 in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSplines\u003c\/td\u003e\n\u003ctd\u003e27 splines\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLimited Lifetime (non-transferable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Yukon 4340 Chrome-Moly left inner axle is a solid, value-minded upgrade for Jeep owners who need more strength from their Dana 30 front axle. It offers clear durability advantages and a lifetime warranty for the original owner, making it a practical choice for off-roaders and higher-power builds, provided the buyer confirms exact fitment and inspects assembly quality on delivery.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this axle fit my Jeep Dana 30?\u003c\/strong\u003e\u003cbr\u003eIt fits left inner Dana 30 applications for '84-'90 XJ, '97 and newer TJ, and '87 and newer Wrangler models; verify spline count and length for your specific vehicle.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does the Limited Lifetime Warranty cover?\u003c\/strong\u003e\u003cbr\u003eThe warranty covers manufacturing defects and axle breakage for as long as you own the vehicle and is not transferable to another party.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this axle stronger than stock?\u003c\/strong\u003e\u003cbr\u003eYes, Yukon states the 4340 chrome-moly construction delivers up to 50% increased strength over stock axles for extreme performance use.\u003c\/p\u003e","brand":"Yukon Gear \u0026 Axle","offers":[{"title":"Default Title","offer_id":48156727345371,"sku":"B0078U7ZOO","price":240.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51tZwHJcoTL._AC_SL1500.jpg?v=1768767218","url":"https:\/\/gearmusthave.com\/products\/yukon-4340-chrome-moly-left-inner-axle-for-jeep-dana-30-durable","provider":"GearMustHave","version":"1.0","type":"link"}