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⚡ Ignite your engine’s full potential with Autolite Racing Spark Plugs!
The Autolite Fram AR3923 High Performance Racing Resistor Spark Plug is engineered for professional-grade racing and high-performance vehicles. Featuring a colder heat range and a yttrium-enhanced alloy, it reduces sidewire temperature by 8% to prevent pre-ignition and improve durability. Its cut-back ground electrode design enhances ignitability, while nickel plating provides superior corrosion resistance. Trusted by racers and built to exceed OEM standards, this spark plug delivers reliable ignition and long-lasting performance for modified and demanding engines.
| ASIN | B000CSNMWS |
| Brand | Autolite Iridium Ultra |
| Brand Name | Autolite Iridium Ultra |
| Compatible with Vehicle Type | Car |
| Core Material | Nickel |
| Core material | Nickel |
| Customer Reviews | 4.5 out of 5 stars 64 Reviews |
| Global Trade Identification Number | 00009100026583 |
| Item Weight | 45 g |
| Manufacturer | FRAM |
| Manufacturer Part Number | AR3923 |
| Model Number | AR3923 |
| Number of Items | 1 |
| OEM Equivalent Part Number | AR3923 |
| Thread Size | 14 mm |
| Thread size | 14 mm |
| Top Material Type | Nickel |
| Top material type | Nickel |
| UPC | 009100026583 |
| Unit Count | 1.0 Count |
| Vehicle service type | Car |
C**N
05 vw gti 1.8t no issues and great product!
Used em in my 05 gti 1.8t high grade spark plug at affordable price. Highly recommend these plugs.
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?
Trustpilot
1 month ago
3 weeks ago