We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.
DOWNLOAD THE APP
Copyright © 2025 Desertcart Holdings Limited
DOWNLOAD THE APP
Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.
⚡ Ignite your engine’s full potential with Autolite Racing Spark Plugs!
Autolite AR3910X Racing Spark Plugs feature a yttrium-enhanced alloy that reduces side wire temperature by 8% for improved durability and less pre-ignition. Their cut-back ground electrode design promotes faster flame kernel growth, ensuring quicker ignition. Nickel-plated for corrosion resistance and precision-fit for specific vehicles, these plugs are trusted by professional racers and engineered to deliver high-performance reliability.
| ASIN | B00IAAVU56 |
| Best Sellers Rank | #111,203 in Automotive ( See Top 100 in Automotive ) #712 in Automotive Performance Spark Plugs |
| Brand | Autolite Iridium Ultra |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,065) |
| Date First Available | 2 September 2015 |
| Exterior | Chrome |
| Item Weight | 54.4 g |
| Item model number | AR3910X-4PK |
| Manufacturer | Autolite |
| Manufacturer Part Number | AR3910X-4PK |
| Model | AR3910X-4PK |
| Position | Center |
| Product Dimensions | 3.56 x 1.14 x 0.41 cm; 54.43 g |
O**R
works great with 212 predator hemi/non-hemi. great for if you have a longer connecting rod + piston head setup like me so the spark plug doesn't hit the piston head. very easy to install and no more gapping the spark plug. gives a strong spark to all four corners of the plug. have a few of them now and will continue to buy them in the future.
D**E
Worked well - bought these in bulk for a kart racing weekend. I change them out twice during the weekend of hard racing because I do not want to be that parent that can't get their kid's kart started when it's go time!
L**K
These are like brisk plugs but a quarter of the cost great upgrade for plugs as long as you know your heat range.
J**R
Se las puse a mis dos mini bike COLEMAN una con motor 196cc y otra con 212cc... Jalan demasiado bien... Muy recomendables.
J**E
Best plugs for mini bike motors!
Trustpilot
2 weeks ago
1 week ago