PCV tube part number 12596246. 2008 Chevrolet Silverado 4.3L engine fresh air PCV crankcase vent tube hose pipe breather line. 2007-2013 Chevrolet Silverado 6 Cyl 4.3L EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON.
