| Item Name | Muffler Exhaust |
| Federal Supply Group (FSG) | Engine Accessories |
| Federal Supply Class (FSC) | 2990 Miscellaneous Engine Accessories Nonaircraft |
| National Item Identification Number (NIIN) | 00-457-1824 (004571824) |
| NCB Code | USA (00) |
| Manufacturer | Marathon Le Tourneau Co, Stemco Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABHP | OVERALL LENGTH | 39.000 INCHES NOMINAL |
| ACQW | INLET CONNECTION TYPE | UNTHREADED SINGLE INLET |
| ADAV | OVERALL DIAMETER | 7.000 INCHES NOMINAL |
| AJLW | OUTLET INSIDE DIAMETER | 4.000 INCHES NOMINAL 1ST OUTLET4.000 INCHES NOMINAL |
| APGF | DESIGN TYPE | DRY |
| ARNA | COOLANT TYPE | AIR |
| ARND | MUFFLER DESIGN | MULTIPASS |
| ARNE | BAFFLE QUANTITY | 6 |
| ARNF | TUBE QUANTITY | 3 |
| ARNG | BODY SHAPE | ROUND |
| ARNJ | INLET LOCATION | CENTERED ON END OF BODY SINGLE INLET |
| ARNK | INLET PROJECTION LENGTH | 3.250 INCHES NOMINAL SINGLE INLET3.250 INCHES NOMINAL |
| ARTE | INLET INSIDE DIAMETER | 4.000 INCHES NOMINAL SINGLE INLET4.000 INCHES NOMINAL |
| ARTH | OUTLET CONNECTION TYPE | UNTHREADED 1ST OUTLET |
| ARTJ | OUTLET LOCATION | CENTERED ON END OF BODY 1ST OUTLET |
| ARTK | OUTLET PROJECTION LENGTH | 3.250 INCHES NOMINAL 1ST OUTLET3.250 INCHES NOMINAL |
| MATT | MATERIAL | STEEL |
| SFTT | SURFACE TREATMENT | ALUMINUM ALLOY |
| Components Related to NSN - 2990-00-457-1824, 2990004571824 | ||||
| 2915-01-513-0478 (2915015130478) | 2910-00-705-9319 (2910007059319) | 2915-00-775-8211 (2915007758211) | 2990-00-689-3311 (2990006893311) | |
| 2915-01-150-6627 (2915011506627) | 2915-00-806-7912 (2915008067912) | 2910-01-122-0822 (2910011220822) | 2910-00-228-2799 (2910002282799) | |
| 2940-01-312-6844 (2940013126844) | 2915-00-431-9604 (2915004319604) | 2920-00-060-0018 (2920000600018) | 2910-01-370-8048 (2910013708048) | |
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