





⚡ Ignite Performance, Drive Efficiency — Don’t Get Left Behind!
Autolite Iridium XP spark plugs combine cutting-edge 0.6mm iridium finewire technology with a durable platinum-protected design to deliver up to 100,000 miles of reliable, fuel-efficient ignition. Trusted since 1936, these plugs offer superior ignitability and optimal engine performance for both domestic and foreign vehicles, backed by a limited lifetime warranty.





| Brand | Autolite Iridium Ultra |
| Core Material | Iridium |
| Thread Size | 5/8" |
| Top Material Type | Alloy Steel |
| Vehicle Service Type | Car, Truck |
| Global Trade Identification Number | 00009100044334 |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 009100044334 |
| Manufacturer | FRAM |
| Model | XP3923-4PK |
| Item Weight | 6.7 ounces |
| Product Dimensions | 3.38 x 4 x 1 inches |
| Item model number | XP3923-4PK |
| Is Discontinued By Manufacturer | No |
| Exterior | Chrome |
| Manufacturer Part Number | XP3923-4PK |
| Position | Center |
| Special Features | Finewire design, Limited Lifetime Warranty |
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