Cummins 4937432 Natural Gas Engine Spark Plug Assembly (Iridium Triple Electrode, Compatible with ISL G/L9N/ISB-G/C8.3G, Alternative to 5473009/4937472/GK3-7)
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| Part Number | 4937432 |
| Applicable Fuel | Compressed Natural Gas (CNG) / Liquefied Natural Gas (LNG) |
| Electrode Material | Central Electrode: Iridium φ0.7mm; Side Electrode: Platinum/Nickel Alloy Three-Side Electrode Design |
| Thread Specification | M14 × 1.25 |
| Thread Length | 19mm (3/4 inch) |
| Hexagon Size | 16mm (5/8 inch) |
| Seal Type | Flat Seat Gasket Seal |
| Electrode Gap | Factory Set at 0.3mm (Not adjustable) |
| Resistance Value | Approx. 5 kΩ (Built-in resistor to suppress electromagnetic interference) |
| Heat Value Grade | Equivalent to NGK heat value 7 / Denso heat value 20 (cold type, suitable for high compression ratio natural gas engines) |
| Voltage | ≥ 30 kV (high energy ignition coil compatible) |
| Packaging Specification | Single OEM packaging / 6-packs industrial box |
| Replacement Electric Component Model | GK3-7 (Original Equipment Manufacturer part number) |
| Replacement Enshi Model | 97156 (equivalent to DILFR7K9G) |
| Certification | ISO 9001/TS 16949/EPA 2010 Emission Compliance |
Manufacturer No.
GK3-797156CH825FR7NI33
OEM Part No.
493743254730094937472495585028817973976119
Engine Part No.
Cummins ISL GCummins L9NCummins ISB-GCummins ISB7GCummins C8.3GCummins ISX12G
Interchange No.
GK3-7NGK 97156Champion CH825Bosch FR7NI33Denso GK3-7Autolite 5702
Fitment Vehicles
Cummins ISL G/L9N natural gas engine heavy trucks (Jiefang, Dongfeng, SINOTRUK, Shaanxi Auto, Auman)Cummins ISB-G/C8.3G natural gas engine medium trucks, city buses (Yutong, Kinglong, Zhongtong, Ankai)Cummins ISX12G natural gas engine heavy trucks, trailersCummins natural gas generator set, gas compressor set
Engine System - Industrial Encyclopedia
Original factory supply Cummins 4937432 natural gas engine spark plug, designed specifically for CNG/LNG engines such as ISL G, L9N, ISB-G, C8.3G. Utilizing iridium triple electrode technology (corresponding to Denso GK3-7 specification), it is resistant to high temperatures and corrosion, with strong ignition energy, effectively solving the problem of difficult ignition and misfire in natural gas engines. Perfectly interchangeable with original part numbers 4937472, 4955850, 5473009, 2881797, and meets EPA 2010 emission standards. Wholesale and retail in stock supply.