⚡ Ignite your engine’s true potential with Autolite Racing Spark Plugs!
Autolite AR3923-4PK High Performance Racing Spark Plugs deliver professional-grade ignition with a colder heat range and yttrium-enhanced alloy that cuts side wire temperature by 8%, boosting durability and reducing pre-ignition. Featuring a cut-back ground electrode for superior flame kernel ignitability and nickel plating for corrosion resistance, these plugs are engineered for modified engines and trusted by race drivers worldwide.
| ASIN | B000CBQ6D2 |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #1,041,629 in Automotive ( See Top 100 in Automotive ) #5,221 in Automotive Replacement Spark Plugs |
| Brand Name | Autolite Iridium Ultra |
| Compatible with Vehicle Type | Car |
| Core Material | Nickel |
| Customer Reviews | 4.5 4.5 out of 5 stars (67) |
| Global Trade Identification Number | 00009100026576 |
| Included Components | 4 spark plugs |
| Item Highlight | Replaces 344 6962. Copper-core build with specialized heat ranges for high-RPM, high-compression competition engines. |
| Item Type Name | HP Racing Spark Plug |
| Item Weight | 1.6 ounces |
| Manufacturer | Autolite |
| Manufacturer Part Number | AR3923-4PK |
| Manufacturer Warranty Description | 4 Year Limited |
| Model Number | AR3923-4PK |
| Number of Items | 4 |
| Thread Size | 14mm |
| Top Material Type | Nickel |
| UPC | 009100026576 |
| Unit Count | 1 Count |
Trustpilot
1 month ago
2 months ago