The Heater,coolant,engine, cataloged under National Stock Number 2990-01-502-7798, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Powerfield Limited T/a Rolls Royce Distributed Generation Systems. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-502-7798 |
| Primary Part Number | GL 500 SEQUENCE 105 |
| Item Name | Heater,coolant,engine |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Powerfield Limited T/a Rolls Royce Distributed Generation Systems |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| GL 500 SEQUENCE 105 | Powerfield Limited T/a Rolls Royce Distributed Generation Systems (GBR) |
| GL 500/105 | Powerfield Limited T/a Rolls Royce Distributed Generation Systems (GBR) |
| Reference | Meaning |
|---|---|
| WL140408-00 | 3/2 Design control — primary reference U.S. Government activity |
| WE140408-00 | 5/9 Secondary reference U.S. Government activity |
| GL 500 SEQUENCE 105 | 5/9 Secondary reference Powerfield Specialist Engines |
| GL 500/105 | 5/9 Secondary reference Powerfield Specialist Engines |
NSN 2990-01-502-7798 is a Heater,coolant,engine, manufactured by Powerfield Limited T/a Rolls Royce Distributed Generation Systems, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-502-7798 has 2 manufacturer part numbers on file: GL 500 SEQUENCE 105 (Powerfield Limited T/a Rolls Royce Distributed Generation Systems), GL 500/105 (Powerfield Limited T/a Rolls Royce Distributed Generation Systems).
Key specifications for GL 500 SEQUENCE 105: Special Features: IMMERSION TYPE; COOLANT BLOCK HEATER. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.