{"product_id":"eaton-gm-8-5-inch-rear-master-differential-install-kit-eatk-gm8-5sr","title":"Eaton GM 8.5-Inch Rear Master Differential Install Kit eatK-GM8.5SR","description":"Eaton master installation kits make upgrading your differential easier by providing all the components needed to properly install your Eaton differential or replace your ring and pinion, in one box. Premium bearings and components ensure long life and quiet operation.\nEaton Master Differential Install Kit; Rear; GM 8.5 in.; 10 Cover Bolts; 10 Ring Gear Bolts; 28\/30 Axle Spline; 30 Pinion Spline; Standard Rotation; w\/ Eaton Posi\/Truetrac;\n\u003cul\u003e\n  \u003cli\u003eIncludes all necessary components to complete installation\u003c\/li\u003e\n  \u003cli\u003eReference Eatons application guide to confirm part fitment\u003c\/li\u003e\n  \u003cli\u003eFor Eaton: 187C149A; 187C148A; 912A556; 913A481\u003c\/li\u003e\n  \u003cli\u003eFor Eaton: 19557-010; 19559-010; 19659-010\u003c\/li\u003e\n  \u003cli\u003eFits 1998 and Older Applications\u003c\/li\u003e\n  \u003cli\u003eEaton only uses premium bearings\u003c\/li\u003e\n  \u003cli\u003eRear\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Eaton eatK-GM8.5SR Master Differential Install Kit provides the essential components needed to install a compatible Eaton differential or replace a ring and pinion in a GM 8.5-inch rear axle. Designed for standard-rotation applications with Eaton Posi or Truetrac differentials, this kit helps simplify installation by combining critical service components in one package.\u003c\/p\u003e\u003cp\u003ePremium bearings and included installation components support long service life, accurate setup, and quiet differential operation when installed according to the vehicle and differential manufacturer’s procedures. The kit is intended for applications using 10 cover bolts, 10 ring gear bolts, 28- or 30-spline axles, and a 30-spline pinion. It fits 1998 and older applications; always verify compatibility with the Eaton application guide before ordering or installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eApplication: Rear GM 8.5-inch axle applications\u003c\/li\u003e\n\u003cli\u003eCompatibility: Eaton Posi and Truetrac differentials\u003c\/li\u003e\n\u003cli\u003eReference Eaton part numbers: 187C149A, 187C148A, 912A556, and 913A481\u003c\/li\u003e\n\u003cli\u003eAdditional Eaton references: 19557-010, 19559-010, and 19659-010\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe Eaton eatK-GM8.5SR is suited for differential upgrades, ring-and-pinion replacement, and drivetrain service where dependable bearing and installation components are required. Confirm axle configuration, spline count, bolt count, rotation, and differential model against the Eaton application guide and vehicle specifications before installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eComplete Kit: Includes the necessary components to install a compatible Eaton differential or replace a ring and pinion.\u003c\/li\u003e\n\u003cli\u003ePremium Bearings: Eaton premium bearings help promote long service life and quiet differential operation.\u003c\/li\u003e\n\u003cli\u003eRear Axle Compatibility: Designed for GM 8.5-inch rear axle applications with standard rotation.\u003c\/li\u003e\n\u003cli\u003eEaton Differential Fitment: Compatible with specified Eaton Posi and Truetrac applications, including 28- and 30-spline axle configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Unknown\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":67646955880700,"sku":"K-GM8.5SR","price":221.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/2fb05ecf49512b60fd791818323ddb20.jpg?v=1791183834","url":"https:\/\/diycustoms.store\/products\/eaton-gm-8-5-inch-rear-master-differential-install-kit-eatk-gm8-5sr","provider":"diycustoms.store","version":"1.0","type":"link"}