# NSN 2990-01-647-6708: Heater, Air Duct-Coolant, Engine

NSN 2990-01-647-6708 (also written 2990016476708; NIIN 01-647-6708) is a heater, air duct-coolant, engine in Federal Supply Class 2990, Miscellaneous Engine Accessories, Nonaircraft. 3 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 2990-01-647-6708 (2990016476708)
- NIIN: 01-647-6708 (016476708)
- Item name: HEATER,AIR DUCT-COOLANT,ENGINE
- Federal Supply Class: [FSC 2990 Miscellaneous Engine Accessories, Nonaircraft](https://nsnexplorer.com/fsc/2990/)
- Federal Supply Group: [FSG 29](https://nsnexplorer.com/group/29/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | AIR DRYER, COELESCING AD-1P 24V |
| FEAT | SPECIAL FEATURES | P/N K049696 IS SOLD ONLY TO OEM(CAGE 75Q65)BUTP/N K047325 IS SOLD AS AFTER MARKET (SAME FIT, FORM, AND FUNCTION); DIMENSIONS ARE: H-13.19IN X W-8.69IN X D-9.29IN |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 3906823 | 75Q65 | OSHKOSH DEFENSE LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| K047325 | 06853 | BENDIX COMMERCIAL VEHICLE SYSTEMS LLC DBA BENDIX COMMERCIAL VEHICLE SYSTEMS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| K049696 | 06853 | BENDIX COMMERCIAL VEHICLE SYSTEMS LLC DBA BENDIX COMMERCIAL VEHICLE SYSTEMS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-08 | [SPE7LX26D0038/SPE7LX27F1207](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=2990016476708) | HEATER, AIR DUCT-COOLANT, ENGINE | DIRECT LINE, INC | $5,354.91 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=2990016476708&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=2990016476708
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/2990-01-647-6708/
JSON: https://nsnexplorer.com/api/nsn/2990-01-647-6708.json