2920-00-554-6653 (7218203)
NSN 2920-00-554-6653 (NIIN 00-554-6653) is a spark plug in Federal Supply Class 2920, Engine Electrical System Components, Nonaircraft — an item containing two or more electrodes across which an electric spark is discharged to ignite a fuel and air mixture. Manufacturer part number 7218203 (U S Army Tank Automotive Command, CAGE 19207); also referenced as 8CB023 (Volvo Trucks North America, Inc.); 18DC0M (Sl Auburn IncSub Of Sl Industries).
Key specs: 152 psi nominal mean effective pressure; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); export Schedule B 8511.10.0000.