⚡ Spark your engine’s true potential with Autolite Copper Power!
The Autolite Fram 437-4PK Copper Non-Resistor Spark Plug pack features a full copper core electrode for superior heat conductivity, a leak-proof heat-fused internal seal for durability, and a copper-glass seal construction for reliable spark delivery. Designed to improve fuel efficiency, quick starts, and smooth acceleration, these spark plugs bring decades of trusted Autolite innovation to your vehicle’s performance.
| ASIN | B000CBQUJC |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | 540,822 in Automotive ( See Top 100 in Automotive ) 2,032 in Car Spark Plugs |
| Brand | Autolite Iridium Ultra |
| Brand Name | Autolite Iridium Ultra |
| Compatible with Vehicle Type | Motorcycle |
| Core Material | Copper |
| Core material | Copper |
| Customer Reviews | 4.8 out of 5 stars 523 Reviews |
| Gap Size | 2 Inches |
| Global Trade Identification Number | 00009100004130 |
| Included Components | 4 spark plugs |
| Item Type Name | Copper Non-Resistor Spark Plug |
| Item Weight | 8 Ounces |
| Manufacturer | FRAM |
| Manufacturer Part Number | 437-4PK |
| Model Number | 437-4PK |
| Number of Items | 4 |
| Number of Packs | 4 |
| OEM Equivalent Part Number | 437-4PK |
| Thread Size | M14-1.25mm |
| Thread size | M14-1.25mm |
| Top Material Type | Alloy Steel |
| Top material type | Alloy Steel |
| UPC | 009100004130 |
| Unit Count | 4.0 count |
| Vehicle service type | Motorcycle |
D**D
As advertised
As described and on time
K**R
Great deal on spark plugs
Nice spark plugs, priced right, well packaged, and fast shipping.
A**S
Great quality and fit
Perfect replacement for my tractor. Works so much better than the 15 year old ones in the tractor.
M**K
Price
Use these in my Ford 8N works great
R**N
Ford 8n
Perfect plug for the Ford 8ns
Trustpilot
3 weeks ago
1 month ago