








⚡ Spark your engine’s potential with DiamondFIRE brilliance!
The E3.54 Premium Spark Plug features patented DiamondFIRE technology with a 14mm thread and 0.708” reach, engineered to deliver up to 12% more power and 13% better fuel efficiency. Its unique side-wire electrode design ensures faster, more complete combustion, reducing emissions and carbon buildup. Built with durable yttrium-enhanced alloy and backed by a 5-year/100,000-mile warranty, it guarantees long-lasting, reliable performance across a wide range of domestic vehicles.
| ASIN | B000BPQGUC |
| Best Sellers Rank | #309,093 in Automotive ( See Top 100 in Automotive ) #1,916 in Automotive Replacement Spark Plugs |
| Brand Name | E3 |
| Compatible with Vehicle Type | Motorcycle |
| Core Material | Copper |
| Customer Reviews | 4.4 4.4 out of 5 stars (758) |
| Gap Size | 0.04 Inches |
| Global Trade Identification Number | 00894489000541, 00894489000558 |
| Included Components | (1) Spark Plug |
| Item Type Name | Spark Plugs |
| Manufacturer | E3 Spark Plugs |
| Manufacturer Part Number | E3.54 |
| Manufacturer Warranty Description | 5 Years or 100,000 miles parts |
| Thread Size | 14mm |
| Top Material Type | Alloy Steel |
| UPC | 894489000558 894489000541 782645716200 |
| Unit Count | 1.0 Count |
J**5
E3 Diamond Fire Excellence
These plugs are something else.. E³ Plugs have performed exceptionally across any make and model I have owned.
M**O
Great plug for any type of vehicle.
The only type of sparkplug that I install on 2000 Chevy 1500 or Chevy 2500 HD, due to the racing plug design that will never foul out backed by 5-year 50,000 mile warranty.
G**C
Great
I have noticeably more power and gas mileage. I live 17.8 miles from work and I usually burn a 1/4 tank of gas to and from work with a 2002 cadillac escalade awd. I burned 1/4 on 3 trips so essentially I got a free 18 miles.
T**D
Cold starts are greatly improved
I installed a set in my 1987 Bronco II that was having trouble starting on cold mornings. I don't know that there was a noticeable improvement in power, but the cold starts make these worth the extra money.
J**Y
Product was great
Love these plugs I have bought them for my 93 eclipse 99 Silverado and my 04 Grand Prix. Great product just wish they would pack the individual box’s better for shipment.
S**3
These Spark Plugs are AMAZING
I started using E3 Spark Plugs back in (around) 2005. At that time I was close to 200 Thousand Miles on my 2000 Chevy Silverado Z71 LS 1500 Series, 5.3 Liter, 8 Cylinder Truck. Even though they don't need it, I put in a Fresh Set of E3 Spark Plugs every July and I am just shy of 400 Thousand miles now on my Truck and it runs as smooth as when I drove it off the lot. Last Month I was experiencing a Mis Fire on Cylinder 8 (I had decided to skip replacing my plugs the past two years in a row). I thought, Ok, let's put in a new set. Swapped out the Plugs and purrs like a kitten.
A**R
Terrible for Chevy 5.3L
These E3 plugs DO NOT work in a 2006 Chevy Tahoe. Terrible. The gap cannot be adjusted and the fixed gap from the factory is far too large. These E3 plugs caused terrible misfires in multiple cylinders constantly. Just terrible. 2006 Tahoe must have a .040" gap. Never again.
J**N
They performed very good and add some hp & mpg however
They performed very good and add some hp & mpg however, I replaced them after 40,000miles and one of the came out with the ceramic briken and nowhere to be found. Possibly with a broken valve because some of the metal crown went with it. It does give you power but I have to be honest about my situation. Good luck!
R**J
work great in a 2012 serria 1500 wt 5.3 O
S**2
They show 1 package of 4 plugs in the ad and it looked like you order 2 packs of 4 but they are singles!Really!
S**Y
This is a good product, however I was a bit taken back at the price. Found out I can get the same plug at Canadian Tire for 17 bucks.
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