4 WHEEL DRIVE. Gasket. REG & QUAD CAB. Axle Housing Cover Gasket. Engine Sealant. Engine Valve Cover Gasket. Optional. Differential. Engine Block Sealing Compound. Engine Sealant. Molding. Oil Seal kit. Package. Rocker. RTV. Transmission Seal kit. Valve. Included with: Axle assembly, Axle Housing, Cover, Housing.