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Buy 3 Tires, Get 4th Tire Free Instantly
Buy 3 Tires, Get 4th Tire Free Instantly. Receive a discount equal to the price of a single tire when four tires are added to the cart. Valid on select in stock tires only. Those tires for which discount is available will be identified in search results & product detail pages. All other tires and special order tires are excluded from this offer. Valid when scheduled for installation on and installation is completed between 6/25/18 through 7/31/18.

E3 Premium Automotive Spark Plug 9537718
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  • Part #: E3.48|
  • SKU: 9537718

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    • Faster flame front converts fuel into More Power
    • More complete burn of the fuel means less "unspent" gas for better fuel efficiency

E3 Premium Automotive Spark Plug

E3 Spark Plugs maximize the burn of the fuel/air mixture, which converts the fuel to energy and puts it to work. The result of a more complete burn is improved power and fuel efficiency, and lower carbon emissions.
  • Faster flame front converts fuel into More Power
  • More complete burn of the fuel means less "unspent" gas for better fuel efficiency
  • Consuming the fuel more completely means less carbon deposits and lower emissions
  • 5 Year/100,000 Mile Warranty
E3 Spark plugs manufacturers premium automotive, small engine and powersports spark plugs that provide improved performance.

Hex Size
Ground Electrode Material
Nickel alloy
Gap cannot be adjusted
Center Electrode Material
Nickel alloy with copper core
Gasket or Taper Seat
Thread Diameter
Thread Reach


E3 Premium Automotive Spark Plug is rated 4.3 out of 5 by 35.
Rated 1 out of 5 by from Horrible Plugs only lasted a week. Engine had a spark detonation to it the whole time the plugs were in! Don't use these plugs
Date published: 2016-09-21
Rated 1 out of 5 by from E3 spark plugs Installed new E3 plugs into my 2008 Sierra with 100000 miles, Gas mileage dropped from 420 miles to 300 miles a tank full ! Changed back to AC DELCO , mileage came back up.
Date published: 2016-09-06
Rated 5 out of 5 by from Great product Good quality plugs easy installation no gapping. I feel more power when accelerating
Date published: 2016-08-31
Rated 5 out of 5 by from super deal got 30% off on a email special, car performs better since installation
Date published: 2016-08-02
Rated 5 out of 5 by from Great plugs Great looking spark plugs, appear to be one piece bodies unlike OEM three piece plugs. Preforming great so far with about 500 miles on them. Feels good to have the power back and about half the price of the OEM plugs.
Date published: 2015-10-21
Rated 5 out of 5 by from To me the best Great spark plugs the best I put in my car better performance smoother idle cleaner tailpipe
Date published: 2015-10-09
Date published: 2015-08-07
Rated 5 out of 5 by from Good plug, increased power Changed all 6 volvo plugs on a 2004 XC-90 T6 with this plug. Pre-gapped, normal plug install. Noticed a little bit more pep than it used to have.
Date published: 2015-05-19
Rated 5 out of 5 by from great product one of the best plugs on the market
Date published: 2014-12-15
Rated 5 out of 5 by from Best spark plugs on the market Bought a set of spark plugs for my Dodge Ram, and what a difference, it put life back into my engine and have it even more horse power then when I first bought the truck. I don't know why any one would buy any other brand.Had a big difference in the gas mileage as well. Bought a set for my Mustang as well, and wow its like a new car! Recommend for everyone to switch to E3's!
Date published: 2014-12-13
Rated 5 out of 5 by from Good quality product fir its price It exceeds OEM parts quality and reliability
Date published: 2014-11-29
Rated 5 out of 5 by from Great price and Product ! Plugs work great and I bought all 8-- I sang the happy song,-- when nothing went wrong I now know where to go-- because the price is always low-- Self fixed my big boy toys-- Cause I buy my parts at Pep Boys--
Date published: 2014-11-25
Rated 5 out of 5 by from A great sparkplug at a great price The spark plug is probably the best plug at its price on the market for this engine, most other plugs are five dollars per plug more expensive and they don't last as long. My truck runs perfect with 163,000 miles on it, no hesitation At all. It no longer bogs down going up last set of plugs lasted about 45 to 55,000 miles and the plugs cost more than what I paid for these plugs. The only problem I had was that ford did not make a engine that is friendly to do it yourself mechanics. It's next to impossible to replaced them in under one hour.
Date published: 2014-11-20
Rated 3 out of 5 by from Easy Engine runs smoother
Date published: 2014-11-10
Rated 5 out of 5 by from hot plug hot plug felt better performance right away .A little costly but you get what you pay for.
Date published: 2014-10-01
Rated 5 out of 5 by from E-3 Spark Plugs I us them in a 2005 F150 with a 5.4 engine and they work great. Looks like you can get about 75,000 miles on them before you need to replace them. I think they are the best plug on the market for 5.4 ford engines. Try them I think you will like them>>>Jim
Date published: 2014-09-15
Rated 5 out of 5 by from Great results! 2006 Mini Cooper... I'm noticing fast, easy starts; smooth idle and acceleration; picked up 1-2 MPG.
Date published: 2014-07-29
Rated 2 out of 5 by from Should have listened The service tech told me Volkswagens were picky about the plugs and that I should use the ones he specified. I used the E3 and now the cars sputters when it starts. Runs ok, once started, but I will end up changing them out.
Date published: 2014-07-17
Rated 5 out of 5 by from Great plugs - great price I installed these plugs on my 2005 CTS at 150,000 miles - Wow! Runs great! Pre-gapped - no worries. Well built. Compared to some other premium plugs these are sturdy, and reasonably priced.
Date published: 2014-02-23
Rated 5 out of 5 by from Great set of plugs. Extra power when you need it. No more ping when you step on the gas. Added horse power.
Date published: 2013-11-20
Rated 4 out of 5 by from Noticable change at start up, power, and acceration I replaced the reliable factory spark plugs in my 2007 Lincoln MK LT at around 60k miles with the E3 Premium spark plugs. I managed to remove all 8 plugs without breaking any off in the well...lucky me, I heard and read the dreaded stories. So, I choose this plug because of the construction of the plug. Although the new E3 plug size was 5/8 vice 9/16, I had no trouble installing or torqueing the plugs to recommended specifications. So far the seem to be working fine. I noticed a smoother Idle and boost in power since the install. Its has only been a week so I'm still evaluating mileage and fuel economy. So far So good. the reason for the 4 star rating in ease of installation/use is because of having to change my plug socket due to the size difference (though it does add strength to the plug...a plus), and I would like to take the time to test drive my truck for a while. I will post an update after a few thousand miles.
Date published: 2013-11-18
Rated 5 out of 5 by from Improved performace After installing in my 2004 Sebring, I noticed a 7% increase in gas mileage and a definite increase in power and acceleration. Just recently installed a set in my Daughters Audi and it has never run as smooth as it does now.
Date published: 2013-10-02
Rated 5 out of 5 by from smart choice for power I put these spark plugs in my '78 Jeep J10 pickup truck . The engine has only around 4k miles on a rebuild . A very noticeable difference in the idling and the acceleration over the Bosch Platinums' I took out . If a smooth running engine is your desire , the few extra dollars are for these plugs are a must .
Date published: 2013-07-03
Rated 4 out of 5 by from Good and Bad Installed these in a 2001 Jeep Cherokee Sport and noticed improved throttle response and power. 50000 miles later still running great. Installed a set in a 2006 Chevy Trail Blazer got maybe 15000 miles and they started fouling out and had to replace them with a set of autolites. I guess it depends on the vehicle if they work or not.
Date published: 2013-05-26
Rated 5 out of 5 by from E3 plugs are the best I have purchased these for several vehicles. I get improved power and milage. I don't recommend them for the vehicles that require platinum plugs. I installed them in my Daughters Nisson sentra without telling her and after she drove it she wanted to know if I had done something to her car because she now had lots of power.
Date published: 2013-05-20
Rated 1 out of 5 by from Wasted $90 The welds on the electrode guard were uneven, they didn't fit correctly in the cylinder head. They went in the trash. I will never shop PEP BOYS again.
Date published: 2013-04-18
Rated 1 out of 5 by from Wrong size the plugs coming out of a 5.4l 3v Ford triton engine are 9/16 these are 5/8. there is little enough room for the correct size socket without having to go bigger.
Date published: 2013-03-29
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