PowerTrax LS201028 Limited Slip Differential Carrier For GM 8.5", 2.73 Ratio & Up, 10-Bolt, 28 Spline - Fits Chevy, GMC, Buick, Pontiac, Oldsmobile, Cadillac – Replaces Eaton 187C149A, Auburn 542018

Short Summary: The PowerTrax LS201028 GRIP LS delivers dependable traction and smooth performance for GM 8.5" 10-bolt axles. Engineered for 28-spline axles and 2.73+ carrier breaks, this clutch-style limited slip unit improves control and handling without compromising comfort or durability.Key FeaturesAxle Fitment: GM 8.5" (10 Bolt)Spline Count: 28Axle Shaft Diameter: 1.2 InchesRing Gear Bolt Quantity: 10Differential Type: Limited Slip (Clutch Style)Carrier Break: 2.73 Ratio and HigherCompatibility: Front and Rear AxlesBearings Required: LM102949 Bearing and LM102911 RaceProp 65 Warning: Cancer and Reproductive Harm - www.p65warnings.ca.govVehicle CompatibilityFits GM 8.5" 10-Bolt Differentials with 28-spline axles across a wide range of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac models from 1970 to 1987.Buick1973–1975 Apollo, 1971–1985 LeSabre, 1973–1977 & 1984–1987 Regal1970–1972 & 1975–1979 Skylark, 1971–1981 Estate WagonCadillac1976–1979 SevilleChevrolet1970–1981 Camaro, 1970–1975 Bel Air, Biscayne, Brookwood1973–1977 Chevelle, El Camino, Malibu, Monte Carlo1971–1985 Impala, 1971–1979 Nova1977–1987 C/K10/K20/Suburban, K5 Blazer, R/V Series TrucksGMC1973–1977 Sprint, 1977–1987 C/K/R/V1500/2500 Trucks & Suburban1979–1987 G1500, G2500 VansOldsmobile1970–1987 Cutlass Series, 1971–1985 Delta 881970–1984 Ninety-Eight, 1973–1979 Omega, 1970–1975 Vista CruiserPontiac1971–1981 Bonneville, Catalina, Firebird, Grand Prix1972–1977 LeMans, 1973–1975 & 1978–1980 Grand Am1975–1977 Grand LeMans, 1971–1975 Grandville, 1972–1973 GTO1971–1972 Laurentian, 1976–1986 Parisienne, 1977–1979 Phoenix1971–1977 VenturaReplaces OEM & Aftermarket Part NumbersEaton: 187C149A, 19557-1, 912A556, 912A557Auburn Gear: 542018, 544905, 545003, 546018, 542050PowerTrax: 1920-LR, 9207852805, GT201028Yukon Gear & Axle: YDGGM8.5-3-28-1Dorman: 697-800Pro-King: 742G715DWarranty & Quality AssuranceBacked by a 2-Year / 100,000-Mile Warranty, the PowerTrax GRIP LS is engineered for lasting performance, reduced tire wear, and enhanced drivability. Ideal for daily driving, light towing, or enthusiast-level builds needing reliable traction without harsh locker engagement.

• ✅ Fits GM 8.5" 10-Bolt Differentials – Designed for vehicles with 28-spline axles and 2.73+ gear ratios for optimal performance.
• ✅ Smooth Limited-Slip Performance – Provides traction when needed while allowing smooth turns, ideal for daily driving & off-road use.
• ✅ Durable Clutch-Style Design – Heavy-duty friction plates ensure superior power transfer without excessive wear.
• ✅ Drop-In Installation – No Special Tools Required – Direct replacement for factory open differentials; uses LM102949 bearing & LM102911 race.
• ✅ OEM & Aftermarket Compatibility – Replaces Eaton 187C149A, Auburn Gear 542018, Yukon YD GGM8.5-3-28-1 & more. 2-Year/100,000-Mile Warranty.