MS51008C, MILITARY STANDARD: HOSE, PREFORMED, FLEXIBLE, ENGINE COOLANT 1-1/4, 1-1/2, 1-3/4, 2, 2-1/4, 2-1/2, 3 I.D. (22 SEP 1976) [SUPERSEDED BY SAE-J20].
MS51008C, MILITARY STANDARD: HOSE, PREFORMED, FLEXIBLE, ENGINE COOLANT 1-1/4, 1-1/2, 1-3/4, 2, 2-1/4, 2-1/2, 3 I.D. (22 SEP 1976) [SUPERSEDED BY SAE-J20].