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Differential Ring & Pinion Richmond Gear 49-0088-1 For GM 8.875" Car Axles, Gear Ratio 3.90, 12-Bolt, Thin Gear, 10 Pinion & 39 Ring Tooth –Fits Buick GM Chevrolet GMC Sprint Pontiac Acadian Beaumont
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Short Summary: The Richmond Gear Thin Ring & Pinion Set 3.90 is designed for GM 8.875" (12-Bolt) car axles using carriers originally set up for 4.10 or numerically higher gear ratios.This high-strength gear set offers reliable power and smooth operation, ideal for classic muscle car restorations or performance upgrades.Key Features Gear Ratio: 3.90 Differential Fitment: GM 8.875" (12-Bolt) Car Axle Gear Style: Thin Ring Gear – requires 4.10+ carrier Tooth Count: 10 Pinion / 39 Ring Application: Rear Axle – Classic GM Car Applications Warranty: 2 Years or 100,000 Miles Vehicle Compatibility Fits GM 8.875" (12-Bolt) rear axles in the following classic vehicle applications: Buick 1965–1972 Electra, GS, GS 350, GS 400, GS 455 1965–1972 Gran Sport, LeSabre, Skylark, Special 1964–1972 Sportwagon 1971–1972 Centurion, Estate Wagon Chevrolet 1965–1972 Bel Air, Camaro, Caprice, Impala, Malibu 1964–1973 Chevelle 1965–1972 El Camino 1965–1968 Chevy II 1969–1972 Nova 1970–1972 Monte Carlo GMC 1971–1972 Sprint Oldsmobile 1965–1972 98, Delta 88, F85, Cutlass, Cutlass Supreme 1967–1968 Delmont 88 1965–1966 Jetstar 88, Jetstar I, Starfire 1967–1972 Vista Cruiser 1971 442 Pontiac 1965–1972 Bonneville, Catalina, GTO, Laurentian, LeMans, Parisienne 1967–1972 Executive, Firebird 1970–1972 Grand Prix 1971–1972 Grand Safari, Grandville 1965–1970 Strato-Chief 1970 Tempest 1965–1971 Acadian 1965–1969 Beaumont Replaces OEM & Aftermarket Part Numbers Direct OE replacement for GM 12-bolt 3.90 thin ring gear applications Warranty & Quality Assurance Backed by a 2-Year / 100,000-Mile Warranty, Richmond Gear ring and pinion sets are manufactured from premium materials for durability and smooth performance.Ideal for muscle car enthusiasts seeking factory-style gearing with modern engineering precision.
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