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⚡ Ignite your drive with Autolite’s copper core spark — where power meets precision!
The Autolite 405 Copper Resistor Spark Plug features a full copper core electrode for enhanced thermal conductivity, a leak-proof copper-glass seal for durability, and a resistor to reduce radio frequency interference. Designed for quick starts, improved fuel efficiency, and smooth acceleration, this vehicle-specific spark plug combines precision engineering with a trusted legacy dating back to 1936.
| ASIN | B000C1WB9K |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #572,535 in Automotive ( See Top 100 in Automotive ) #3,162 in Automotive Replacement Spark Plugs |
| Brand Name | Autolite Iridium Ultra |
| Compatible with Vehicle Type | Car, Truck |
| Core Material | Copper |
| Customer Reviews | 3.2 3.2 out of 5 stars (37) |
| Global Trade Identification Number | 00009100004055 |
| Included Components | 405 |
| Item Type Name | Spark Plug |
| Item Weight | 1.6 ounces |
| Manufacturer | FRAM |
| Manufacturer Part Number | 405 |
| Manufacturer Warranty Description | Lifetime Limited Warranty |
| Model Number | 405 |
| OEM Equivalent Part Number | 405 |
| Part Interchange Info | 405 |
| Thread Size | Regular Metric |
| Top Material Type | Alloy Steel |
| UPC | 009100004055 |
| Unit Count | 1.0 Count |
A**F
Great product! Worked like a charm
Great product! Worked like a charm.
B**T
Only One Plug
Shows pack of four, but only one plug.
J**F
Product good. Delivery shorted every time.
The first time I ordered 2 sets of 4 and only received 1 set of 4. I complained about the shortage of one set of 4 and received just one more piece. I sent it back because it was incomplete and then received 2 pieces. I am still short 2 spark plugs of the second set of 4.
W**Y
fraudulent title - NOT a 4 pack
The autolite 405 plug is fine. The product listing is very misleading. Buying 1 of these is just 1 plug, NOT A 4 PACK as the title says.
G**H
Only received 1 plug.
Description clearly says pack of four, but only received 1 plug.
M**Y
Good for the money
Great price and fast delivery
J**D
What was supposed to be 2 packs of 4.
So this is misleading when you purchase sparkplug they usually come as a 4 pk. These are over priced for individual plugs. You can purchase these at any auto parts store for $1.89 per plug. So look elsewhere for these plugs. You can get a 4pk for $8
B**Y
Shows 4 pack
It shows a 4 pack of plugs and I assumed it was 1, 4 pack as pictured however I only received 1 plug
J**U
Look good quality but haven’t used them yet
Trustpilot
2 weeks ago
1 day ago