Ngk 3G-OTH-521840 — Technical Specifications
The NGK Marine Spark Plug (SKU 60GR54, MPN 4323) is a nickel-core resistor plug with a 5/8 in hex size, 0.551 in thread size, and 0.46 in thread reach, designed for OMC marine applications. It cross-references to Motorcraft ARF36. 3G Electric interprets demand and delivers this genuine NGK part across 14 industrial departments — with specialist depth in combustion, pumps and controls — ensuring you get the right answer, not just a catalog.
Technical Specifications
| Parameter | Value |
|---|---|
| Type | Nickel Core |
| Brand | NGK |
| Hex Size | 5/8 in |
| Application | Marine |
| Thread Size | 0.551 in |
| Thread Reach | 0.46 in |
| Resistor Plug | Yes |
| Compatible Vehicle Make | Omc |
| Manufacturer Part Number | 4323 |
| Center Electrode Material | Nickel |
| Ground Electrode Material | Nickel Core |
| Spark Plug Cross Reference Number | Motorcraft ARF36 |