{"product_id":"speedmaster-pce204-1031-gm-8-875-12-bolt-12t-truck-30-spline-lsd-limited-slip-differential","title":"Speedmaster PCE204.1031 GM 8.875\" 12 Bolt 12T Truck 30 Spline LSD Limited Slip Differential","description":"The TorqueWorm is a torque biasing 6 pinion gear type limited-slip unit. This is a preloaded unit allowing for a faster-reacting unit. The use of 6 pinion gears means the stress on gears is spread over a greater surface area, reducing the load on all internal components. The internal components are made from EN36 Material as used in racing. The outer cases made from 8620 Chrome-Nickel-Moly steel and the case hardened for long life and improved strength. The GM 8.875\" (often rounded to 8.9\") 12 Bolt axle is available in passenger car (GM 12P) and truck (GM 12T) rear axle configurations and features an 8.875\" ring gear and 30 spline semi floating axle shafts. While both versions of the axle have similar specifications on paper, they do have unique differential carrier housings and most parts, including ring and pinion gears are not interchangeable. Because both axles are commonly referred to as GM 12 Bolt axles, it is important to know which version you have before ordering your parts. The easiest way to tell them apart is that the passenger car version has a perfectly round differential cover while the truck version has an irregular shape.\r\n\u003cul\u003e\t\u003cli\u003e6 pinion gear type limited slip unit\u003c\/li\u003e\r\n\t\u003cli\u003ePreloaded unit allowing for a faster reacting unit\u003c\/li\u003e\r\n\t\u003cli\u003eInternal components are made from EN36 Material\u003c\/li\u003e\r\n\t\u003cli\u003eOuter case made from hardened 8620 Chrome-Nickel-Moly steel for long life and improved strength\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\t\t\t\t\u003cdiv class=\"product__accordion accordion\"\u003e\n\t\t\t\t\u003cdetails\u003e\n\t\t\t\t  \u003csummary aria-expanded=\"false\"\u003e\n\t\t\t\t\t\u003cdiv class=\"summary__title\"\u003e\u003ch2 class=\"h4 accordion__title\"\u003eAttributes\u003c\/h2\u003e\u003c\/div\u003e\n\t\t\t\t\t\u003csvg aria-hidden=\"true\" focusable=\"false\" role=\"presentation\" class=\"icon icon-caret\" viewbox=\"0 0 10 6\"\u003e\u003cpath fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M9.354.646a.5.5 0 00-.708 0L5 4.293 1.354.646a.5.5 0 00-.708.708l4 4a.5.5 0 00.708 0l4-4a.5.5 0 000-.708z\" fill=\"currentColor\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\t\t\t\t  \u003c\/summary\u003e\n\t\t\t\t  \u003cdiv class=\"accordion__content\"\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eGTIN: \u003c\/b\u003e00840136515180\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eBrand Name: \u003c\/b\u003eSpeedmaster\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eAdd-On: \u003c\/b\u003eN\/A\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eTLE: \u003c\/b\u003eSpeedmaster PCE204.1031 GM 8.875\" 12 Bolt 12T Truck 30 Spline LSD Limited Slip Differential\u003c\/li\u003e\r\n\u003c\/ul\u003e\u003c\/div\u003e\n\t\t\t\t\u003c\/details\u003e\n\t\t\t\t\u003c\/div\u003e\r\n\t\t\t\t\u003cdiv class=\"product__accordion accordion\"\u003e\n\t\t\t\t\u003cdetails\u003e\n\t\t\t\t  \u003csummary aria-expanded=\"false\"\u003e\n\t\t\t\t\t\u003cdiv class=\"summary__title\"\u003e\u003ch2 class=\"h4 accordion__title\"\u003eExtended Information\u003c\/h2\u003e\u003c\/div\u003e\n\t\t\t\t\t\u003csvg aria-hidden=\"true\" focusable=\"false\" role=\"presentation\" class=\"icon icon-caret\" viewbox=\"0 0 10 6\"\u003e\u003cpath fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M9.354.646a.5.5 0 00-.708 0L5 4.293 1.354.646a.5.5 0 00-.708.708l4 4a.5.5 0 00.708 0l4-4a.5.5 0 000-.708z\" fill=\"currentColor\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\t\t\t\t  \u003c\/summary\u003e\n\t\t\t\t  \u003cdiv class=\"accordion__content\"\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eCountry of Origin: \u003c\/b\u003eCN\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eEmissions : \u003c\/b\u003eRacing or Pre-Emissions Use Only\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eLife Cycle Status: \u003c\/b\u003eAvailable To Order\u003c\/li\u003e\r\n\u003c\/ul\u003e\u003c\/div\u003e\n\t\t\t\t\u003c\/details\u003e\n\t\t\t\t\u003c\/div\u003e\r\n\t\t\t\t\u003cdiv class=\"product__accordion accordion\"\u003e\n\t\t\t\t\u003cdetails\u003e\n\t\t\t\t  \u003csummary aria-expanded=\"false\"\u003e\n\t\t\t\t\t\u003cdiv class=\"summary__title\"\u003e\u003ch2 class=\"h4 accordion__title\"\u003ePacking Information\u003c\/h2\u003e\u003c\/div\u003e\n\t\t\t\t\t\u003csvg aria-hidden=\"true\" focusable=\"false\" role=\"presentation\" class=\"icon icon-caret\" viewbox=\"0 0 10 6\"\u003e\u003cpath fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M9.354.646a.5.5 0 00-.708 0L5 4.293 1.354.646a.5.5 0 00-.708.708l4 4a.5.5 0 00.708 0l4-4a.5.5 0 000-.708z\" fill=\"currentColor\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\t\t\t\t  \u003c\/summary\u003e\n\t\t\t\t  \u003cdiv class=\"accordion__content\"\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eQuantity of Each: \u003c\/b\u003e1\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003ePackage UOM: \u003c\/b\u003eEA\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eDimension: \u003c\/b\u003e9.5 x 8.5 x 8.5 inches\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eWeight: \u003c\/b\u003e26.2 lb\u003c\/li\u003e\r\n\u003c\/ul\u003e\u003c\/div\u003e\n\t\t\t\t\u003c\/details\u003e\n\t\t\t\t\u003c\/div\u003e\r\n\t\t\t\t\u003cdiv class=\"product__accordion accordion\"\u003e\n\t\t\t\t\u003cdetails\u003e\n\t\t\t\t  \u003csummary aria-expanded=\"false\"\u003e\n\t\t\t\t\t\u003cdiv class=\"summary__title\"\u003e\u003ch2 class=\"h4 accordion__title\"\u003ePDF\u003c\/h2\u003e\u003c\/div\u003e\n\t\t\t\t\t\u003csvg aria-hidden=\"true\" focusable=\"false\" role=\"presentation\" class=\"icon icon-caret\" 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