1939-1955 GMC Truck.       New-Old-Stock 361-426-503 CAMSHAFT TIMING CHAIN GEAR.  Please ensure this is correct for you before purchasing.   This is an ORIGINAL GM NOS PART.   This Gear is in Excellent NOS condition. Brand new in the box.  Ready To Install. Impossible To Find NOS. Please email with any questions.               091422-4                 WE HAVE AN EBAY STORE WITH THOUSANDS OF ORIGINAL and NOS FORD PARTS. CHECK IT OUT.