
Vehicle Specific
Check if it fits by entering your vehicle info| Brand | Denso | 
| Part Number | 3104 | 
| Part Description | Spark Plug Standard | 
| Center Electrode Design | Standard / Regular | 
| Drive Size | 13/16 in | 
| Gap - Factory Preset | 1.4 mm = 0.055 in | 
| Ground Configuration | Multi-Electrode | 
| Ground Electrode Configuration | Quad | 
| Ground Electrode Core Material | Nickel | 
| Ground Electrode Quantity | 4 | 
| Ground Electrode Tip Design | Multi-Electrode | 
| Ground Electrode Tip Material | Nickel Alloy | 
| Hex Size | 20.6 | 
| Insulator Material | Ceramic | 
| Insulator Type | Non-Projected | 
| Internet Product Code (IPC) | FB5B5A2E373 | 
| Item has MSDS (SDS) | N | 
| Manufacturer Heat Range | 25 | 
| Manufacturer Heat Range Number | 25 | 
| MFG Brand Name | DENSO Auto Parts | 
| MFG Model # (Series) | 3104 | 
| MFG Name | DENSO | 
| Pre-Gap Size | 0.055 | 
| Reach | 20.00 | 
| Resistance | 5000 | 
| Resistor | Yes | 
| Seat Style | Gasket | 
| Seat Type | Flat | 
| Short Style | No | 
| Supplier Company Name | DENSO | 
| Thread Diameter | 0.551 | 
| Thread Size | 14mm | 
| UPC | 042511031043 | 
| Year Make Model | Trim | Engine | 
|---|---|---|
| 1981-1985 Mazda RX-7 | All Trims | 2 Cyl 1.1L |