NGK IFR7F-4D Laser Iridium Spark Plug
| Thread Specification | M14 × 1.25 |
| Thread Length | 19 mm (3/4\u201d) |
| Wrench Size | 16 mm (5/8\u201d) |
| Temperature Grade | 7 (NGK standard, cold type for high compression ratio gas engines) |
| Center Electrode Material | Platinum |
| Electrode Count | 1.0 mm (factory preset, manual adjustment prohibited) |
| Seat Type | Flat Seat/Gasket Seat |
| Resistance Type | With resistor (Resistor, 5kΩ) |
| Applicable Fuel | CNG (Compressed Natural Gas) / LNG (Liquefied Natural Gas) |
| Original Part Number | 5115 |
| Model Code | IFR7F-4D |
Manufacturer No.
IFR7F-4D5115
OEM Part No.
110R-000011
Engine Part No.
4DH8RSYuchai CNG SeriesWeichai CNG SeriesShangchai CNG SeriesSinotruk CNG/LNG
Fitment Vehicles
Yuchai Engine Heavy Duty Trucks/TrailersWeichai Engine Heavy Duty Trucks/TrailersShangchai Engine Vehicle ModelSINOTRUK CNG/LNG Gasoline VehicleFAW Jiefang CNG/LNG Gasoline VehicleCNG/LNG Urban Bus
Engine System - Industrial Encyclopedia
High-performance NGK IFR7F-4D laser iridium spark plug, compatible with Yuchai and Weichai CNG/LNG engines. Features laser-welded iridium tip for superior durability and stable ignition. Replaces OEM parts 5115 and 110R-000011.