The Spark Plug, cataloged under National Stock Number 2920-00-820-4578, is classified within Federal Supply Class 2920 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is General Motors Llc Dba General Motors. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2920-00-820-4578 |
| Primary Part Number | R44 |
| Item Name | Spark Plug |
| FSC / FSG | 2920 / 29 — No Item Name Available |
| Manufacturer | General Motors Llc Dba General Motors |
| Status | ACTIVE |
| Electrode Style | SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4) |
| Seat Major Diameter | 0.812 INCHES NOMINAL IN |
| Body Style | UNSHIELDED, THREADED POST, GASKET SEAT |
| Width Across Flats | 0.812 INCHES NOMINAL IN |
| Reach Length | 0.375 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| R44 | General Motors Llc Dba General Motors (USA) |
| R44 | General Motors Llc Dba General Motors Llc (USA) |
| 5568970 | General Motors Corp (USA) |
| R44 | General Motors Corp (USA) |
| 5568970 | General Motors Llc Dba General Motors (USA) |
| 5568970 | General Motors Llc Dba General Motors Llc (USA) |
NSN 2920-00-820-4578 is a Spark Plug, manufactured by General Motors Llc Dba General Motors, classified under FSC 2920 (No Item Name Available). Status: active.
NSN 2920-00-820-4578 has 6 cross-referenced part numbers: R44 (General Motors Llc Dba General Motors), R44 (General Motors Llc Dba General Motors Llc), 5568970 (General Motors Corp), R44 (General Motors Corp), 5568970 (General Motors Llc Dba General Motors) and 1 more.
There are 5 known substitutes for 2920-00-820-4578: 5930-00-367-6788, 5365-00-876-0307, 5325-00-962-5373 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for R44: Electrode Style: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4); Seat Major Diameter: 0.812 INCHES NOMINAL IN; Body Style: UNSHIELDED, THREADED POST, GASKET SEAT; Width Across Flats: 0.812 INCHES NOMINAL IN. 5 total characteristics are documented in the Federal Logistics Information System.