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⚡ Ignite your drive with precision and power — don’t let your engine settle for less!
Autolite Iridium XP Spark Plugs combine cutting-edge 0.6mm iridium finewire technology with platinum ground protection to deliver up to 100,000 miles of reliable, fuel-efficient ignition. Designed for both domestic and foreign vehicles, these plugs enhance engine responsiveness, improve fuel economy, and come backed by a limited lifetime warranty from a trusted brand since 1936.





| ASIN | B078KPZNG2 |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #181,970 in Automotive ( See Top 100 in Automotive ) #1,088 in Automotive Replacement Spark Plugs |
| Brand Name | Autolite Iridium Ultra |
| Compatible with Vehicle Type | Car, Truck |
| Core Material | Iridium |
| Customer Reviews | 4.5 4.5 out of 5 stars (462) |
| Gap Size | 0.6 Millimeters |
| Global Trade Identification Number | 00009100267344 |
| Included Components | 4 Iridium Spark Plugs |
| Item Type Name | Spark Plug |
| Item Weight | 2.56 ounces |
| Manufacturer | FRAM |
| Manufacturer Part Number | XP3922-4PK |
| Manufacturer Warranty Description | Lifetime Limited Warranty |
| Model Number | XP3922-4PK |
| OEM Equivalent Part Number | XP3922-4PK |
| Thread Size | 14 millimeters X 1.25 |
| Top Material Type | Nickel |
| UPC | 009100267344 |
| Unit Count | 1.0 Count |
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