GMC DIESEL ENGINE 50 80 65 0 736 CAP ENGINE TIMING GEAR COVER 8 2212E I 2449800 DH478 44 0 736 LOCK IDLER GEAR THRUST WASHER BOLT 8 2287E Z 2378410 DH47B 0 736 SHAFT CAMSHAFT OR BALANCE SHAFT IDLER GEAR 8 2356EM 1 2454018 DH478 Camshaft 1 811951 DH478 Idler Balance Shaft ncI Pin F0ur Mtg Bolt Holes 0 738 KEY ENGINE CRANKSHAFT GEAR 8 2270E 1 124549 DH478 x 4 0 738 PIN BALANCE SHAFT IDLER GEAR SHAFT 8 2303E 1 611952 DH478 Shaft w Four Mtg Bolt Holes WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION 78TM N S reference only Added this issue 0 57 0 736 0 738 AR PART