⚡ 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 |
| Best Sellers Rank | #182,099 in Automotive ( See Top 100 in Automotive ) #1,112 in Automotive Replacement Spark Plugs |
| Brand | Autolite Iridium Ultra |
| Brand Name | Autolite Iridium Ultra |
| Compatible with Vehicle Type | Car |
| Core Material | Nickel |
| Customer Reviews | 4.4 out of 5 stars 62 Reviews |
| Global Trade Identification Number | 00009100026576 |
| Included Components | 4 spark plugs |
| Item Height | 3.38 inches |
| Item Type Name | HP Racing Spark Plug |
| Item Weight | 0.1 Pounds |
| Manufacturer | Autolite |
| Manufacturer Part Number | AR3923-4PK |
| Manufacturer Warranty Description | 4 Year Limited |
| Thread Size | 14mm |
| Top Material Type | Nickel |
| UPC | 009100026576 |
| Unit Count | 4.0 Count |
| Vehicle Service Type | Car |
D**L
great spark plugs
we put the plugs in the race truck every year great plugs
D**D
Preferred plug for SBF w AFR185s & 100 shot
Recommended by AFR, run them with no issues on NX 100 shot gapped at .035. The cut back ground strap and nickel plating are nice. The nickel plating with just a little anti seize makes removal a non-issue from aluminum cylinder heads. Recommend grabbing them when the price is right, sometimes it’s same or better than the standard 392X Autolites.
K**N
Five Stars
AAA
M**R
Did not fit vehicle
Did not fit?
1**Y
plugs
fast shipping and good price
2**W
Great job thank you
Great job thank you
