{"product_id":"yukon-za-g1255803-sh-gm-8-2-8-5-axle-29-1-2in-28-spline-camaro-chevelle","title":"USA Standard Axle For GM 8.2in \u0026 8.5in Passenger Car. 29 1\/2in Long \/ 28 Spline \/ 2.780in Hub","description":"\u003ch4\u003e28-Spline GM 8.2in and 8.5in Rear Axle Shaft for Early Camaro, Chevelle, and Firebird Applications\u003c\/h4\u003e\n\u003cp\u003eThe ZA G1255803-SH from USA Standard Gear is a precision replacement rear axle shaft for General Motors 8.2in and 8.5in semi-floating rear axle applications found in a wide range of classic GM muscle cars and pony cars. Measuring 29 1\/2 inches in length with a 28-spline count and a 2.780-inch brake pilot, this shaft is designed as a direct-fit replacement for early Chevelle, first-generation Camaro, and Firebird applications. Produced from 1541H alloy steel, the ZA G1255803-SH provides the strength and fatigue resistance appropriate for street-driven classic cars and those used in spirited performance driving.\u003c\/p\u003e\n\u003cp\u003eThis shaft fits applications on the GM 8.2in or GM 8.5in rear axle housing where this specific 29 1\/2-inch, 28-spline shaft is required. This shorter length compared to similar GM shafts makes it specific to a subset of classic car fitments, so confirming the length against your original shaft is essential before installation. USA Standard Gear backs the ZA G1255803-SH with a 10-year limited warranty against manufacturer defects.\u003c\/p\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1 x USA Standard Gear \u003cstrong\u003eZA G1255803-SH\u003c\/strong\u003e Rear Axle Shaft\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003eZA G1255803-SH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003eContact us for UPC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDifferential\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in and GM 8.5in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAxle Type\u003c\/td\u003e\n\u003ctd\u003eSemi-floating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShaft Length\u003c\/td\u003e\n\u003ctd\u003e29 1\/2in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpline Count\u003c\/td\u003e\n\u003ctd\u003e28\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrake Pilot Diameter\u003c\/td\u003e\n\u003ctd\u003e2.780in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e1541H alloy steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10-year limited against manufacturer defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eVehicle Fitment\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1965\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eChevelle\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1966\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eChevelle\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eChevelle\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1968\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eChevelle\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1969\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eChevelle\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1970\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eChevelle\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1971\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eChevelle\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1972\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eChevelle\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCamaro\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1968\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCamaro\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1969\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCamaro\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1970\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1971\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1972\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1973\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1974\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1975\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1976\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1977\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1978\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1979\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1980\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1981\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eFirebird\u003c\/td\u003e\n\u003ctd\u003eGM 8.2in or 8.5in Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eAbout USA Standard Gear and the GM Classic Car Market\u003c\/h4\u003e\n\u003cp\u003eUSA Standard Gear, a brand under Yukon Gear and Axle, has built a strong reputation in the classic car restoration and performance upgrade market by producing drivetrain parts that match the original equipment specifications of vintage GM platforms. The GM 8.2in and 8.5in rear axles are among the most common differentials found in classic muscle cars, and maintaining an accurate parts supply for these axles is essential for keeping these vehicles on the road. This shaft reflects the brand's commitment to providing correct-fit replacement components for these important classic platforms.\u003c\/p\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eWhat vehicles does this shaft fit?\u003c\/strong\u003e\u003cbr\u003eThis shaft fits 1965 through 1972 Chevrolet Chevelle, 1967 through 1969 Chevrolet Camaro, and 1970 through 1981 Pontiac Firebird vehicles equipped with the GM 8.2in or GM 8.5in semi-floating rear axle where the 29 1\/2-inch shaft length applies.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between this shaft and the ZA G1255802-SH?\u003c\/strong\u003e\u003cbr\u003eBoth shafts share the same 28-spline count and 2.780-inch brake pilot, but differ in length. The \u003cstrong\u003eZA G1255803-SH\u003c\/strong\u003e is 29 1\/2 inches long, while the ZA G1255802-SH is 30 1\/8 inches long. The correct part depends on which side and which specific vehicle application you are working on. Always measure the original shaft before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm whether my classic Camaro needs this shaft or a different one?\u003c\/strong\u003e\u003cbr\u003eThe best method is to measure the length of the shaft being replaced from end to end. If the measurement is 29 1\/2 inches and the spline count is 28, this is the correct replacement. Also verify the brake pilot diameter of 2.780 inches.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this shaft fit both the GM 8.2in and the GM 8.5in axle?\u003c\/strong\u003e\u003cbr\u003eYes. This shaft is dimensioned to fit both the GM 8.2in and GM 8.5in semi-floating rear axle housings in the listed applications. Confirm spline count and length match before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat material is this shaft made from?\u003c\/strong\u003e\u003cbr\u003eThe shaft is produced from 1541H alloy steel. The elevated manganese content in this alloy improves case hardening depth and fatigue life, which is why it is a preferred material for performance and OEM-replacement axle shafts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this shaft work with a Positraction carrier in a Camaro or Firebird?\u003c\/strong\u003e\u003cbr\u003eYes. The shaft engages with the carrier side gear, and the limited-slip function of the carrier is independent of the shaft itself. As long as the 28-spline specification matches your carrier's side gear, this shaft is compatible with both open and limited-slip carriers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat warranty does this shaft carry?\u003c\/strong\u003e\u003cbr\u003eUSA Standard Gear backs the \u003cstrong\u003eZA G1255803-SH\u003c\/strong\u003e with a \u003cstrong\u003e10-year limited warranty against manufacturer defects\u003c\/strong\u003e. This warranty is offered in compliance with the Magnuson-Moss Warranty Act. Retain your purchase documentation for warranty service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this shaft suitable for a first-generation Camaro restoration?\u003c\/strong\u003e\u003cbr\u003eYes. This shaft covers first-generation Camaro years 1967, 1968, and 1969 where the GM 8.2in or GM 8.5in rear axle was used with this shaft length. It provides an OEM-correct replacement shaft for a restoration build.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this shaft be used on a 1965 Chevelle in a drag racing application?\u003c\/strong\u003e\u003cbr\u003eThis is a quality street-grade replacement shaft. For vehicles subjected to high launch forces at the drag strip, evaluate whether a heavy-duty or chromoly-grade axle shaft better matches the power level and usage demands of the application.\u003c\/p\u003e\n\u003ch4\u003eInstallation Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eRaise the vehicle safely and support it on rated jack stands. Remove the wheel on the side being serviced.\u003c\/li\u003e\n\u003cli\u003eRemove the brake drum or disc brake components as appropriate for your application.\u003c\/li\u003e\n\u003cli\u003eRemove the differential cover and drain the gear oil completely.\u003c\/li\u003e\n\u003cli\u003eRemove the pinion shaft retaining bolt and withdraw the pinion shaft from the carrier.\u003c\/li\u003e\n\u003cli\u003ePush the axle shaft inward to access the C-clip groove, then remove the C-clip.\u003c\/li\u003e\n\u003cli\u003eSlide the old axle shaft out of the housing tube. Inspect the axle seal and bearing for wear; replace any damaged components before proceeding.\u003c\/li\u003e\n\u003cli\u003eInsert the \u003cstrong\u003eZA G1255803-SH\u003c\/strong\u003e into the axle tube, engaging the splines with the carrier side gear. Push inward until the C-clip groove is accessible inside the differential.\u003c\/li\u003e\n\u003cli\u003eInstall the C-clip in the groove, then pull the shaft outward to fully seat the C-clip against the side gear face.\u003c\/li\u003e\n\u003cli\u003eReinstall the pinion shaft and torque the retaining bolt to the manufacturer's specification.\u003c\/li\u003e\n\u003cli\u003eClean the differential cover sealing surface thoroughly. Reinstall with a new gasket or appropriate RTV sealant and torque the cover bolts evenly.\u003c\/li\u003e\n\u003cli\u003eFill the differential with the correct gear oil type and quantity.\u003c\/li\u003e\n\u003cli\u003eReinstall brakes and wheel. Torque all fasteners to specification.\u003c\/li\u003e\n\u003cli\u003eLower the vehicle and test drive. Inspect for gear oil leaks after the test drive.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yukon Gear \u0026 Axle","offers":[{"title":"Default Title","offer_id":45974397714511,"sku":"YUKZA G1255803-SH","price":146.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/Yukon_ZA_G1255803-SH_GM_8.2_8.5_Axle_29-1_2in.png?v=1782657333","url":"https:\/\/www.blackopsautoworks.com\/products\/yukon-za-g1255803-sh-gm-8-2-8-5-axle-29-1-2in-28-spline-camaro-chevelle","provider":"Black Ops Auto Works","version":"1.0","type":"link"}