| Item Name | Muffler Exhaust |
| Federal Supply Group (FSG) | Engine Accessories |
| Federal Supply Class (FSC) | 2990 Miscellaneous Engine Accessories Nonaircraft |
| National Item Identification Number (NIIN) | 00-470-4194 (004704194) |
| NCB Code | USA (00) |
| Manufacturer | Libby Power Systems Llc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABHP | OVERALL LENGTH | 20.500 INCHES NOMINAL |
| ACQW | INLET CONNECTION TYPE | THREADED SINGLE INLET |
| ACRX | INLET THREAD DIRECTION | RIGHT-HAND SINGLE INLET |
| ADAV | OVERALL DIAMETER | 4.187 INCHES NOMINAL |
| APGF | DESIGN TYPE | DRY |
| ARNA | COOLANT TYPE | AIR |
| ARND | MUFFLER DESIGN | STRAIGHT THROUGH |
| ARNG | BODY SHAPE | ROUND |
| ARNH | OPERATING POSITION | UNIVERSAL |
| ARNJ | INLET LOCATION | LOCATED CENTER OF END OF BODY SINGLE INLET |
| ARNK | INLET PROJECTION LENGTH | 2.250 INCHES NOMINAL SINGLE INLET2.250 INCHES NOMINAL |
| ARNW | INLET THREAD SIZE | 1-7/8-12 SINGLE INLET |
| ARNX | INLET THREAD SERIES DESIGNATOR | UNC SINGLE INLET |
| ARSP | INLET THREAD LOCATION | EXTERNAL SINGLE INLET |
| ARTH | OUTLET CONNECTION TYPE | THREADED 1ST OUTLET |
| ARTJ | OUTLET LOCATION | LOCATED CENTER OF END OF BODY 1ST OUTLET |
| ARTK | OUTLET PROJECTION LENGTH | 2.250 INCHES NOMINAL 1ST OUTLET2.250 INCHES NOMINAL |
| ARTW | OUTLET THREAD SIZE | 1-5/8-12 1ST OUTLET |
| ARTX | OUTLET THREAD SERIES DESIGNATOR | UNC 1ST OUTLET |
| ARTY | OUTLET THREAD DIRECTION | RIGHT-HAND 1ST OUTLET |
| ARTZ | OUTLET THREAD LOCATION | EXTERNAL 1ST OUTLET |
| MATT | MATERIAL | STEEL |
| SFTT | SURFACE TREATMENT | PAINT |
| Relevant Components for NSN - 2990-00-470-4194, 2990004704194 | ||||
| 2990-01-375-8177 (2990013758177) | 2915-00-150-7331 (2915001507331) | 2920-00-324-3685 (2920003243685) | 2920-00-741-6529 (2920007416529) | |
| 2995-00-915-7733 (2995009157733) | 2940-01-686-2924 (2940016862924) | 2910-01-359-9944 (2910013599944) | 2915-00-367-9295 (2915003679295) | |
| 2995-00-798-8304 (2995007988304) | 2990-00-169-2920 (2990001692920) | 2930-00-322-9520 (2930003229520) | 2995-00-004-1343 (2995000041343) | |
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