TM 9-2815-237-34 Change 1 D-3/(D-4 blank) Section II.   MANDATORY REPLACEMENT PARTS (Cont’d) (1) (2) (3) (4) ITEM PART NATIONAL/NATO NO NOMENCLATURE NUMBER STOCK NUMBER 38 Ring Set, Piston (Standard) (6.5L) 12510752 39 Ring, Retaining 121-1 5365-00-598-1428 40 Ring, Retaining 23566 5365-01-188-8962 41 Seal, Drain Plug 27609 5330-01-133-2778 42 Seal, Dust 3018-01339-01 5330-01-247-8438 43 Seal, Front Cover Oil 3860095 5330-00-110-8437 44 Seal, Rear Main Oil (6.2L) 23500139 5530-01-249-1629 45 Seal, Rear Main Oil (6.5L) 23503969 5330-01-378-8577 46 Seal, Rear Oil Pan 14022683 5330-01-150-7744 47 Seal, Valve 3835333 2805-00-752-0158 48 Seal, Valve Stem (Exhaust only) 23502552 5330-01-315-7047 49 Snapring 23500298 5365-01-234-0447 50 Spring 4088-35869-01 5360-01-190-6214 51 Spring, Helical 28397 5360-01-318-1893 52 Stud, Governor 23352 5307-01-188-9217 53 Valve Stop 26070 54 Woodruff Key 106751 5315-00-012-4548 55 Capscrew, Hex-Head, 5/16-18x1-in. B1821BH031C100N 5306-00-226-4827 56 Capscrew, Hex-Head, 3/8-16x1-in. B1821BH038C100N 5305-00-068-0510