{"product_id":"eaton-posi-gm-8-2-55-64-17-spline-19686-010","title":"Eaton Posi Clutch-Type Limited-Slip Differential | GM 8.2in 17-Spline | 19686-010","description":"\u003cp\u003eThe Eaton Posi is a clutch-type limited-slip differential built with race-bred carbon friction discs in a fully rebuildable housing. Net-forged internal gears add strength, and the clutch preload can be tuned by changing spring packs to dial in the bias for the application. It operates automatically and smoothly. This unit fits the GM 8.2in 3rd-member axle used from 1955 to 1964.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: Clutch-type limited-slip differential\u003c\/li\u003e\n\u003cli\u003eAxle: GM 8.2in 3rd member\u003c\/li\u003e\n\u003cli\u003eRing gear diameter: 8.2in\u003c\/li\u003e\n\u003cli\u003eAxle shaft diameter: 1.197in\u003c\/li\u003e\n\u003cli\u003eSpline count: 17\u003c\/li\u003e\n\u003cli\u003eGear ratio: 3.90 and numerically lower\u003c\/li\u003e\n\u003cli\u003eRebuildable: Yes, serviceable with Eaton Posi service kits\u003c\/li\u003e\n\u003cli\u003ePart number: 19686-010\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAxle Fitment\u003c\/h3\u003e\n\u003cp\u003eFits the GM 8.2in 3rd-member (55-64) rear axle, 17-spline, for 3.90 and numerically lower ratios. Confirm your axle and spline count.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch5\u003eCan the Eaton Posi be rebuilt?\u003c\/h5\u003e\n\u003cp\u003eYes. The Posi uses a fully rebuildable clutch pack, and Eaton offers disc, shim, and preload spring service kits to refresh or retune it.\u003c\/p\u003e\n\u003ch5\u003eWhat is the difference between a Posi and a Truetrac?\u003c\/h5\u003e\n\u003cp\u003eThe Posi is a clutch-type limited-slip that can be rebuilt and tuned with spring packs, while the Truetrac is a gear-driven limited-slip with no clutches. Both operate automatically.\u003c\/p\u003e\n\u003ch5\u003eWhich axle does 19686-010 fit?\u003c\/h5\u003e\n\u003cp\u003eIt fits the GM 8.2in 3rd-member axle, 17-spline, used from 1955 to 1964. Confirm your axle and spline count before ordering.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Can the Eaton Posi be rebuilt?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The Posi uses a fully rebuildable clutch pack, and Eaton offers disc, shim, and preload spring service kits to refresh or retune it.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between a Posi and a Truetrac?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Posi is a clutch-type limited-slip that can be rebuilt and tuned with spring packs, while the Truetrac is a gear-driven limited-slip with no clutches. Both operate automatically.\"}}, {\"@type\": \"Question\", \"name\": \"Which axle does 19686-010 fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It fits the GM 8.2in 3rd-member axle, 17-spline, used from 1955 to 1964. Confirm your axle and spline count before ordering.\"}}]}\u003c\/script\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":42960465002544,"sku":"BHXC_19686-010","price":775.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/DET19686-010.jpg?v=1776461693","url":"https:\/\/berryperformancesales.com\/products\/eaton-posi-gm-8-2-55-64-17-spline-19686-010","provider":"Berry Performance Sales","version":"1.0","type":"link"}