{"product_id":"yukon-zg-gm8-2-355-ring-pinion-gm-8-2in-bop-3-55-ratio","title":"USA Standard Ring \u0026 Pinion Gear Set For GM 8.2in in a 3.55 Ratio","description":"\u003ch4\u003eYukon Gear ZG GM8.2-355 Ring and Pinion Gear Set GM 8.2in 3.55 Ratio\u003c\/h4\u003e\n\u003cp\u003eThe Yukon Gear ZG GM8.2-355 is a ring and pinion gear set for the GM 8.2 in. (BOP) rear differential in a 3.55 gear ratio. The GM 8.2 in. differential was used in 1964-1972 Buick, Oldsmobile, and Pontiac A-body muscle cars. Manufactured to exceed OEM dimensional, material, and fitment specifications, each Yukon ZG GM8.2-355 gear set undergoes rigorous in-house quality evaluation. Yukon's Lifetime Warranty is included, and Magnuson-Moss protections apply for drivetrain warranty claims.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceeds OEM specifications\u003c\/strong\u003e — rigorous in-house dimensional, material, and fitment testing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.55 gear ratio\u003c\/strong\u003e — a popular street performance ratio for the GM 8.2 in. BOP axle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits GM 8.2 in. (BOP) differential\u003c\/strong\u003e — 1964-1972 Buick, Oldsmobile, and Pontiac A-body applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYukon Lifetime Warranty\u003c\/strong\u003e — Magnuson-Moss protections apply for drivetrain warranty claims\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1x Yukon ZG GM8.2-355 ring gear\u003c\/li\u003e\n\u003cli\u003e1x Yukon ZG GM8.2-355 pinion gear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eZG GM8.2-355\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003eNot available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDifferential\u003c\/td\u003e\n\u003ctd\u003eGM 8.2 in. (BOP axle)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGear Ratio\u003c\/td\u003e\n\u003ctd\u003e3.55\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eYukon Lifetime Warranty (Magnuson-Moss applies)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003e1964-1972 Buick \/ Oldsmobile \/ Pontiac A-body (GM 8.2 in. BOP rear differential)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What vehicles use the GM 8.2 in. BOP differential?\u003c\/strong\u003e\u003cbr\u003eA: The GM 8.2 in. BOP differential was used in 1964-1972 Buick, Oldsmobile, and Pontiac A-body cars, including the GTO, Chevelle-based Pontiac, Cutlass, Skylark, and related models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is the GM 8.2 in. BOP axle the same as the GM 8.2 in. Chevy axle?\u003c\/strong\u003e\u003cbr\u003eA: No. The BOP (Buick\/Oldsmobile\/Pontiac) 8.2 in. and the Chevy 8.2 in. are different axles with different ring and pinion specifications. The ZG GM8.2-355 fits the BOP version.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What ratio is available?\u003c\/strong\u003e\u003cbr\u003eA: This listing is for the 3.55 ratio. Yukon offers multiple ratios for the GM 8.2 in.; contact your dealer for other available ratios.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Do I need an overhaul kit with this ring and pinion?\u003c\/strong\u003e\u003cbr\u003eA: Yes. When replacing ring and pinion gears, a master overhaul kit (bearings, races, seals) should be replaced at the same time for optimal performance and longevity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is included with the gear set?\u003c\/strong\u003e\u003cbr\u003eA: The ring gear and pinion gear only. Bearings, seals, and hardware are sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does Yukon offer a warranty?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Yukon Gear provides a Lifetime Warranty. Magnuson-Moss protections apply for qualifying drivetrain applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is a professional installation recommended?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Differential ring and pinion installation requires precise shimming, preload setup, and backlash measurement. Professional installation by a qualified drivetrain specialist is strongly recommended.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What friction modifier is required for a posi rear?\u003c\/strong\u003e\u003cbr\u003eA: If your GM 8.2 in. uses a Posi-Traction limited-slip differential, use the appropriate friction modifier per the limited-slip manufacturer's specification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Instructions\u003c\/h4\u003e\n\u003cp\u003eInstallation of ring and pinion gears requires specialized tools including a differential bearing press, dial indicator, and depth gauge. Set pinion depth using the provided shim pack and Yukon installation guide. Install carrier bearings, set carrier preload, and adjust ring and pinion backlash to 0.005 to 0.009 in. (or per OEM specification). Check gear contact pattern with marking compound before final assembly. Torque all ring gear bolts to OEM specification. Fill with the correct gear oil and friction modifier if applicable.\u003c\/p\u003e","brand":"Yukon Gear \u0026 Axle","offers":[{"title":"Default Title","offer_id":45974398173263,"sku":"YUKZG GM8.2-355","price":345.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/Yukon_ZG_GM8.2-355_Ring_Pinion_GM.jpg?v=1782658326","url":"https:\/\/www.blackopsautoworks.com\/products\/yukon-zg-gm8-2-355-ring-pinion-gm-8-2in-bop-3-55-ratio","provider":"Black Ops Auto Works","version":"1.0","type":"link"}