Surface Gap Plug - Mercury / Johnson / Marine - 7447BUZ8H - NGK - NOS
| Brand | NGK |
| Part Number | 7447BUZ8H |
| Type | Spark Plug |
| Condition | New Old Stock |
Specifications
- Thread diameter: 14 mm
- Thread pitch: 1.25 mm
- Reach: 12.7 mm (1/2")
- Hex size: 13/16" (21 mm)
- Seat type: Gasket (flat seat)
- Pre-gap: 0.016" (0.4 mm)
- Heat range: 8
- Resistor: Yes — inductive type
- Resistor value: 35 ohms
- Terminal type: Solid
- Centre electrode material: Nickel with copper core
- Ground electrode configuration: Surface discharge (no side wire electrode)
- Torque (cast iron head): 18–25.3 lb·ft
- Torque (aluminium head): 18–21.6 lb·ft
Vehicle Fitment
| Johnson | outboard engines — multiple models (CDI ignition systems) |
| Mercury | outboard engines — multiple models 1979–1998 (CDI ignition systems) |
| Mercury | inboard engines — various |
| Marine | jet boat engines — Bayliner, Caribe, Checkmate, Cutter, Delta Sonic Jet, Dynasty, Euroline, Nautica, North River, Northstar, Regal, Sea Ray, Sea-Doo, Sugar Sand, Tender Jet, Voyager |
| Mercury | Mariner 50hp 3-cylinder 2-stroke outboard |
Cross References
| Part Numbers | Relationship |
|---|---|
| Autolite 2852, Champion QL16V, Champion CCH876M, Denso SF-24 | equivalent |
| Mercruiser 33-876, Mercruiser 33-886, OMC 502894, OMC 509924, Mercury 14103568 | OE original |
New Old Stock (NOS) — Unused part in original condition. Packaging may show age-related shelf wear. New old stock in original sealed NGK retail box. Box shows minor shelf wear consistent with age — slight scuffing on corners. Part appears unused and unfitted. Electrical and ignition components should be tested by a qualified auto electrician before installation. Please confirm this part number suits your vehicle before purchasing.
SKU: IGN-00496
