| NGK Number | NGK Model | OE Model |
| 1208 | ILZFR6D11 | 12122158253 |
| 1637 | ILFR5B11 | 12120037663 |
| 4281 | ILZFR5B | |
| 4458 | ILFR6J-11K | |
| 4904 | ILFR6T11 | |
| 97606 | PLZFR5B13EG | |
| 5416/6619 | LFR6AIX-11 | |
| 5468 | SILFR6A11 | |
| 5987 | PLZFR6A-11S | |
| 6240 | PLFR5A-11 | |
| 4469 | LFRIX-11 | |
| 0373 | SILFR6B8 | |
| 6645 | ILZFR6C-K | |
| 6708/4469 | LFR5AIX-11 | |
| 7505 | SILFR6C11 | |
| 7654 | PLFR6A-11 | |
| 90215 | PLFR4A-11 | |
| 90428 | ILZFR6C-11K | |
| 96779 | ILFR5T11 |
Modern engines require stable ignition performance to achieve efficient combustion, smooth acceleration, and reliable starting. The 7704 Performance Spark Plugs are designed to deliver consistent spark energy under demanding driving conditions while supporting improved combustion efficiency and long-term durability.
Built with precision-engineered electrodes and durable insulating materials, these spark plugs help reduce ignition misfires and improve flame propagation inside the combustion chamber. A properly functioning spark plug plays a critical role in maintaining engine responsiveness, fuel economy, and stable idle operation. Spark plugs generally require high voltage from the ignition system to ignite the compressed air-fuel mixture effectively.Compared with worn or low-quality spark plugs, Performance Spark Plugs provide more stable ignition performance, especially in engines operating at high temperatures or under frequent load changes. Their optimized electrode structure supports stronger spark focus and improved ignition efficiency, helping engines maintain smoother combustion.
The performance spark plugs are developed to meet the demands of modern gasoline engines where ignition precision is increasingly important. Their durable construction helps extend service life while reducing the risk of unstable combustion.
| Feature | Benefit |
| Stable spark generation | Improves combustion consistency |
| Durable electrode design | Reduces electrode wear |
| High-temperature resistance | Supports reliable ignition performance |
| Optimized spark efficiency | Helps reduce misfires |
| Strong insulation materials | Improves operational stability |
| Precision manufacturing | Supports smoother engine operation |
These Performance Spark Plugs are suitable for drivers seeking dependable ignition performance, smoother acceleration, and improved engine responsiveness.
A bad spark plug can directly affect engine performance because it disrupts the ignition process inside the combustion chamber. One of the most common symptoms is engine misfire, where combustion becomes incomplete or inconsistent. Drivers may also notice rough idling, slow acceleration, hard starting, or increased fuel consumption.
In some cases, worn spark plugs can cause loss of engine power during acceleration or unstable operation at higher RPM levels. Excessive electrode wear may enlarge the spark gap, reducing ignition efficiency and combustion quality over time. Engine warning lights may also appear if ignition problems become severe. Discussions among vehicle owners frequently associate worn spark plugs with reduced power, rough engine behavior, and fuel economy concerns.
Replacing damaged or worn spark plugs in time helps maintain stable ignition performance and protects the engine from long-term combustion-related issues.
The 7704 Performance Spark Plugs are designed to support efficient combustion, reliable ignition stability, and long service life in modern engine systems. With improved spark efficiency and durable construction, they provide a practical solution for maintaining engine performance and reducing ignition-related problems.
| Application | Auto Engine Parts |
| size | OEM Standard |
| Warranty | Two year or 50,000 km |
| Application | Auto Ignition System |
| Quality | 100% Professional Test |
| MOQ | 50 Pcs |
| Packing | Neutral Packaging or Customized box |
| Color | Picture Showing |
| Delivery time | 10-50 Days,usually depends on the quantity |
| Package | Neutral Packaging |
| Specifications: | |||
| Item Description: | Ignition Coil,Auto Ignition Coil | OEM No.: | New |
| Material: | Plastics & Metal&Copper | Condition: | |
| Pins: | Color | Picture Showing | |
| Warranty: | 2-years / 50,0000 kilometers | Car Fit: | For Cars |
| MOQ: | 100 | Size: | OEM Standard |
| Stocks: | Yes | Quanlity: | Excellent |
| Shipping Terms: | DHL,EMS,TNT,UPS,as your requirements | Payment Terms: | Western Union, T/T,L/C |
| Packing Details: | Neutral Packaging or Customized box | Delivery Time: | 20-40 days after order, usually depends on the quantity |