{"product_id":"yukon-gear-4-cylinder-ring-pinion-gear-set-for-4wd-toyota-8in-488-ratio","title":"Yukon Gear 4.88 4-Cylinder Ring \u0026 Pinion Gear Set for Toyota 8\" Differential 4WD (1979-95 4Runner\/Pickup)","description":"\u003ch3\u003eYukon Gear 4-Cylinder 4.88 Ring \u0026amp; Pinion Gear Set For Toyota 8\" Differential\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eFor 1979–1995 4WD Toyota Pickup \u0026amp; 1984–1995 4WD Toyota 4Runner Equipped with Toyota 8\" Differentials and 20R, 22R, 22RE Engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Yukon Gear 4.88 Ring \u0026amp; Pinion Gear Set is a premium differential upgrade designed for Toyota 4WD trucks and SUVs equipped with Toyota's legendary 8-inch rear differential. Featuring a 4.88:1 gear ratio and a heavy-duty 29-spline pinion design, this gear set helps restore performance lost to larger tires, improve low-speed torque, enhance off-road capability, and increase overall drivetrain durability.\u003c\/p\u003e\n\u003cp\u003eBuilt using advanced machining, precision heat-treatment processes, and rigorous quality control standards, Yukon ring and pinion gear sets are trusted by professional installers, overland enthusiasts, restorers, and off-road builders worldwide.\u003c\/p\u003e\n\u003cp\u003eWhether you're upgrading a classic Toyota Pickup, restoring a 4Runner, towing heavier loads, or building a capable trail vehicle, Yukon gears provide dependable performance and long-term reliability.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Upgrade to 4.88 Gears?\u003c\/h2\u003e\n\u003cp\u003eThe 4.88:1 ratio is one of the most popular gearing upgrades for Toyota 4WD vehicles running larger tires or operating in challenging terrain.\u003c\/p\u003e\n\u003ch3\u003ePerformance Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eImproved low-speed torque multiplication\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnhanced off-road crawling capability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRestores acceleration after larger tire upgrades\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImproved throttle response\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBetter towing and hauling performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced clutch and transmission strain\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImproved drivability in mountainous terrain\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExcellent balance between highway and off-road performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor many Toyota owners running 33-inch to 35-inch tires, 4.88 gears provide an ideal combination of trail performance and daily drivability.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eHeavy-Duty 29-Spline Pinion Design\u003c\/h2\u003e\n\u003cp\u003eUnlike factory Toyota gear sets that commonly utilize a smaller 27-spline pinion shaft, Yukon engineers this gear set around a larger and stronger 29-spline design.\u003c\/p\u003e\n\u003ch3\u003eAdvantages of the 29-Spline Upgrade\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLarger pinion shaft diameter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIncreased drivetrain strength\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImproved resistance to pinion failure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBetter durability under heavy loads\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIdeal for oversized tire applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImproved long-term reliability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis upgraded design strengthens one of the most highly stressed components within the differential assembly.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eImportant 29-Spline Conversion Information\u003c\/h2\u003e\n\u003ch3\u003ePlease Read Before Ordering\u003c\/h3\u003e\n\u003cp\u003eMost 1979–1995 Toyota Pickup and 1984–1995 Toyota 4Runner models originally came equipped with 27-spline pinion hardware.\u003c\/p\u003e\n\u003cp\u003eBecause this Yukon gear set uses a larger 29-spline pinion shaft, additional conversion components are required for installation.\u003c\/p\u003e\n\u003ch3\u003eRequired Conversion Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e29-Spline Companion Flange \/ Yoke\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e29-Spline Pinion Seal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e29-Spline Pinion Nut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese components are included when selecting:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e29-Spline Gears + 27-to-29 Spline Conversion Hardware Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eunder the Installation Spline Configuration option.\u003c\/p\u003e\n\u003cp\u003eThis package provides the required hardware needed to convert factory 27-spline applications to the stronger 29-spline Yukon setup.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003ePrecision Yukon Engineering\u003c\/h2\u003e\n\u003cp\u003eEvery Yukon ring and pinion gear set is engineered to meet strict quality, durability, and performance standards.\u003c\/p\u003e\n\u003ch3\u003eConstruction Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ePrecision-machined ring and pinion gears\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAdvanced heat-treated alloy steel construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOptimized gear tooth geometry\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePremium surface finishing process\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eQuality-tested gear tooth patterns\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for quiet operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEngineered for long service life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese manufacturing processes help ensure proper gear mesh, smooth operation, and dependable long-term performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBuilt for Off-Road \u0026amp; Heavy-Duty Use\u003c\/h2\u003e\n\u003cp\u003eYukon gear sets are designed to withstand demanding environments ranging from daily driving to extreme off-road use.\u003c\/p\u003e\n\u003ch3\u003eDurability Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-strength gear construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExcellent wear resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for oversized tire applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with many locking differentials\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProven performance under heavy loads\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLong-term drivetrain reliability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether your Toyota spends its time on the highway, trail, or deep in the backcountry, Yukon gears are built to perform.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eIdentifying the Correct Differential Housing\u003c\/h2\u003e\n\u003ch3\u003e4-Cylinder vs V6\/Turbo Third Members\u003c\/h3\u003e\n\u003cp\u003eToyota produced two different Toyota 8-inch differential housings. Selecting the correct gear set depends on which third member your vehicle is equipped with.\u003c\/p\u003e\n\u003ch4\u003eStandard 4-Cylinder Housing\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eThree external reinforcement ribs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFound in most 20R, 22R, and 22RE applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUses this gear set\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eV6\/Turbo Housing\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFour prominent reinforcement ribs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDistinct trapezoid-shaped upper rib\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFound in most 22R-TE and 3VZ-E applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRequires the Yukon V6\/Turbo gear set\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuick Visual Identification\u003c\/h3\u003e\n\u003cp\u003eLook at the outside of the third member housing:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e3 Ribs = Standard 4-Cylinder Differential\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e4 Ribs + Top Trapezoid Rib = V6\/Turbo Differential\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf your vehicle is equipped with a factory V6 or turbo third member, use the Yukon V6\/Turbo-specific gear set instead. \u003ca href=\"https:\/\/preserverad.com\/products\/yukon-gear-4-88-v6-turbo-ring-pinion-gear-set-for-toyota-8-differential-4wd-1979-95-4runner-pickup-copy?_pos=6\u0026amp;_fid=50f0e2d1a\u0026amp;_ss=c\" target=\"_blank\" rel=\"noopener\"\u003eClick Here\u003c\/a\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eYukon Y.E.S. Protection Plan\u003c\/h2\u003e\n\u003cp\u003eYukon offers one of the strongest protection programs available in the differential industry.\u003c\/p\u003e\n\u003ch3\u003eCoverage Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eEligible for Yukon Y.E.S. Protection Plan\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLifetime protection available\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNo-questions-asked coverage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProtection available for as long as you own the vehicle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRefer to Yukon warranty requirements and installation guidelines for complete coverage details.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e33-inch to 35-inch tire upgrades\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOff-road builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRock crawling\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOverland vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExpedition rigs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTowing applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRestoration projects\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePerformance drivetrain upgrades\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n\u003ch3\u003eToyota Pickup\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1979–1983 Toyota Pickup\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e4WD Models\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eToyota 8\" Rear Differential\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e20R and 22R Equipped Vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e1984–1988 Toyota Pickup\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e4WD Models\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eToyota 8\" Rear Differential\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e22R and 22RE Equipped Vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e1989–1995 Toyota Pickup\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e4WD Models\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eToyota 8\" Rear Differential\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e22R and 22RE Equipped Vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eToyota 4Runner\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1984–1989 Toyota 4Runner\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e4WD Models\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eToyota 8\" Rear Differential\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e22R and 22RE Equipped Vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e1990–1995 Toyota 4Runner\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e4WD Models\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eToyota 8\" Rear Differential\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e22RE Equipped Vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Applications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1975–1990 Toyota Land Cruiser\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eEquipped with compatible Toyota 8\" differentials\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for Toyota 8-inch differential applications only\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned specifically for naturally aspirated 4-cylinder Toyota applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with 20R, 22R, and 22RE engines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e4.88:1 gear ratio\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHeavy-duty 29-spline pinion design\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRequires matching 29-spline yoke, seal, and pinion nut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWill not fit Toyota 7.5-inch IFS front differentials\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProfessional installation recommended\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProper gear break-in required\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVerify carrier and locker compatibility before ordering\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFactory G254 Differential Warning\u003c\/h3\u003e\n\u003cp\u003eCertain Toyota applications were equipped with the rare factory G254 4.88 differential assembly. This Yukon gear set is not compatible with those factory carrier configurations without converting to a standard Toyota 8-inch carrier and third-member assembly.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eAvailable Configurations\u003c\/h2\u003e\n\u003ch3\u003eStandard Gear Set\u003c\/h3\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e(1) Yukon 4.88 Ring Gear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e(1) Yukon 4.88 Pinion Gear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInstallation Instructions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGear Set + 29-Spline Conversion Hardware Kit\u003c\/h3\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e(1) Yukon 4.88 Ring Gear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e(1) Yukon 4.88 Pinion Gear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e(1) 29-Spline Companion Flange \/ Yoke\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e(1) 29-Spline Pinion Seal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e(1) 29-Spline Pinion Nut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInstallation Instructions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis option provides the necessary hardware required to convert factory 27-spline applications to the stronger 29-spline Yukon setup.\u003c\/p\u003e","brand":"Yukon Gear \u0026 Axle","offers":[{"title":"29-Spline Gears Only (Requires Conversion Hardware)","offer_id":52998999212341,"sku":"451","price":394.0,"currency_code":"USD","in_stock":true},{"title":"29-Spline Gears + 27-to-29 Spline Conversion Hardware Kit","offer_id":52998999245109,"sku":"456","price":474.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/6005\/8421\/files\/Untitled-4_7bb3bbdf-f594-4c52-b509-d6ff185f767c.png?v=1781455861","url":"https:\/\/preserverad.com\/products\/yukon-gear-4-cylinder-ring-pinion-gear-set-for-4wd-toyota-8in-488-ratio","provider":"Preserve Rad","version":"1.0","type":"link"}