Moroso 85481 Moroso 99-18 GM Truck LS Engine Air/Oil Separator Catch Can - Billet AluminumMoroso 85481 Moroso 99 18 GM Truck LS Engine Air Oil Separator Catch Can Billet Aluminum Air Oil Separator Kit, Catch Can, Chevrolet Silverado & GMC Sierra with LS Engines 1999 14, Chevrolet Silverado 2500 3500 & GMC Sierra 2500 3500 with 6. 0 LS LY6 Vortec Engines 2014 18, Hummer H2 2003 09 General Information *Please note: May not apply to all kits Plumbed into a vehicle's PCV system to capture the excess crankcase vapors, residual oil mist and