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⚡ Ignite your drive with Autolite’s copper core spark plugs—where power meets precision!
Autolite 4163 Copper Resistor Spark Plugs feature a full copper core electrode for enhanced thermal conductivity, a leak-proof copper-glass seal for durability, and a resistor to reduce interference and electrode wear. Designed for universal fit in cars and trucks, these plugs deliver quick starts, better fuel economy, and smooth acceleration, backed by Autolite’s trusted legacy since 1936.
| Brand | Autolite Iridium Ultra |
| Core Material | Copper |
| Top Material Type | Alloy Steel |
| Vehicle Service Type | Car, Truck |
| Global Trade Identification Number | 00009100004109, 00009100255150 |
| Automotive Fit Type | Universal Fit |
| UPC | 009100004109 009100255150 |
| OEM Part Number | 4163 |
| Manufacturer | FRAM |
| Model | 4163-4PK |
| Item Weight | 1.6 ounces |
| Product Dimensions | 1 x 1 x 3.38 inches |
| Item model number | 4163-4PK |
| Is Discontinued By Manufacturer | Yes |
| Exterior | Chrome |
| Manufacturer Part Number | 4163-4PK |
| Position | Front, Rear |
P**T
Good price
It works, fires the engine and at a good price
C**G
Cheaper plug that works
Cheaper then 1 ngk and they are lasting just as long fit the same
D**A
One plug not one box of plugs
The spark plug itself is fine, but please be aware that you are ordering ONE individual spark plug, even though the description and the pictures show a box of four plugs.
B**N
Good price
B3tter than Walmart price and work as good as ngk
T**Y
I will buy again.
They fit my Suzuki Intruder very well. They where almost gap to the right size also. I could have used them right out of the box but I like to get things just right. Good product. I will get again.
J**Y
spark plug
great spark plug will be installaing on my 2001 klr 250 just in time for some spring time riding soon
J**P
as expected good product easy to find online
fits my honda foreman; good product easy to find online. tried to buy at carquest they were no help; amazon came through
L**O
Wrong quantity sent
There was support to be 4 spark plugs sent but only one came.
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Hace 1 mes