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| Warranty Available for Download |
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Warranty
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Autolite® Iridium Ultra® is equipped with a laser welded iridium enhanced fine-wire center electrode that ensures your engine runs at maximum performance; while its double precious metal design provides increased durability, allowing your engine to maintain desired performance levels for longer. Iridium Ultra delivers optimal fuel efficiency, acceleration, and ignitability, making it the best OE replacement plug choice for modern engines.
| Ground Electrode Quantity | 1 |
| Insulator Type | Projected |
| Terminal Type | Stud |
| Spark Plug Reach | 0.982 in / 24.9428 mm |
| Sub Brand | Iridium Ultra |
| VMRS Code | 033003005 |
| Spark plug Inductive | No |
| Thread Size | 14 mm |
| Quality Level | Best |
| Spark Plug Heat Range | Autolite 12 |
| Brand | Autolite |
| Spark Plug Thread Size | 14 mm |
| Gap Size | 0.051 in |
| Seat Type | Tapered |
| Contains VOCs | No |
| Electrode Core Material | Iridium |
| Insulator Material | Ceramic |
| Manufacturer | Autolite |
| Spark Plug Resistor | Yes |
| Resistor Type | Yes |
| SDS Required | No |
| Grade Type | Performance |
| Hex Size | 5/8 in |
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