For Chevy GMC GM 8.5" 8.6" Posi Unit 30 Spline Eaton-Style Limited-Slip Locker

Description： 100% New and High Quality Direct Replacement 1 Year Warranty Type:Transfer Case Differential Type:Limited-Slip Fitment Type:Direct Replacement Superseded Part Number:8.6" Posi Unit 30 Spline Interchange Part Number: 19559-010, 542022, YDGGM8.5-3-30-1 Eaton-Style (clutch) Posi Unit Fits For 2.73 & Numerically Higher Gear Ratios (3.08, 3.42, 3.73, 4.11, 4.56, etc) Nodular Iron Casing Heavy Duty Composite Clutches, 400lb Springs & Forged 4130 Internals Includes (2) Carrier Bearings & (2) Carrier Bearing Races Fits 1999 and Newer Chevy 1500 Applications .