CRANKCASE VENT TUBE ELBOW -BIG BLOCK(Air Cleaner to Valve Cover) Air cleaner to right hand valve cover FITS 65-72 BIG BLOCK(except 67 3x2).(use with ACL642 Hose for 68-72BB)(see ACL639 Hose for 68-69 3x2) MakeCHEV ModelCORVETTE Year1965-1972 Item#ACL644 Instructions / Core Return FormClick Here Price$16.95EACH Core Charge$0.00 QtyAdd