NGK (5555) PFR6G-11 Laser Platinum Spark Plug, Pack of 1 Review

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(More customer reviews)These sparks plug are very good for the low price. Seller was very fine and responsable.

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NGK (3764) BKR6EIX-11 Iridium IX Spark Plug, Pack of 1 Review

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(More customer reviews)From grrrrrr to fvrrrrrm, recommend these plugs. Used to change out 55k 12 year old OEM plugs on a 98 Impreza. Time will tell on mileage...

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Denso (3395) SK16PR-L11 Iridium Long Life Spark Plug, Pack of 1 Review

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(More customer reviews)I can't really feel much difference but psychologically they seem better than the OEM's. I expect them to last the life of the car; using the better grade of 87 octane gas and changing the fuel filter at 30K.

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Pulstar be1i Iridium Pulse Spark Plug, Pack of 1 Review

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(More customer reviews)I have had these for 2 weeks now. I installed them on my 2006 Jetta 2.5L. My average MPG has gone from 23 to 28 in the very little I have driven in the past 2 weeks. I think there may be a slight performance increase but I'm not sure yet. The concept is solid, though there is a lot of skepticism about these, do know that there are 2 versions of these. There is the OLD version which retails for about $24, and the new which is around $12. The old models are troublesome so be sure to get the new ones. With PROPER GAPPING, and experienced installation, they should work flawlessly.

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Pulstar Iridium Pulse Plugs are the first real breakthrough in spark plug technology in over 120 years. They look and fit like spark plugs, but contain an integrated electrical capacitor, which focuses the energy of the plug in much the same way that a camera flash intensifies light. The result is peak electrical energy delivered to the fuel mixture that is far beyond that typical of conventional spark plugs, allowing for more complete combustion that in turn produces not only better fuel efficiency, but also increased torque and horsepower. Viewlarger.

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6 New DENSO Iridium Spark Plugs IK20 # 5304 Review

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(More customer reviews)These worked very very well.
In both my 1998 BMW 323is [M52 IIRC] as well as my 2001 525iT [M54] they went in just fine and the cars both ran without a hiccup after install.
Replacing the OEM NGKs in the 5er, and Bosch plugs in the 3er.
\o/ no check engine lights!

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6 New DENSO Iridium Spark Plugs IK16 # 5303 Review

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(More customer reviews)When I saw these special plugs that fit my rotary Mazda RX-8 at such a ridiculously low price - I was skeptical. So I ordered and not only did they arrive in only a couple days, they are just what the doctor ordered! Bravo!


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Denso (3168) PK20PR11 Double Platinum Spark Plug, Pack of 1 Review

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(More customer reviews)I replaced my stock plugs on my VW GTI. I didn't notice much difference at all. Which means they probably work well.

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Denso (5304) IK20 Iridium Spark Plug, Pack of 1 Review

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(More customer reviews)Picked up a set of these to replace the stock NKGs on my 2005 Honda Accord 4 cylinder after 97k miles. The originals were still good -- just doing a spring-time overhaul.
Engine felt smoother although that could be psychological. What is real, however, is a solid and consistent 2 MPG increase in fuel economy from what I was averaging over the last 60k miles.
I'll try to update this review after 30k miles or so.

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Denso (5303) IK16 Iridium Spark Plug, Pack of 1 Review

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(More customer reviews)I own a Civic LX 99 and this product made my engine start quicker and run smoother I had NGK before installing this! I will definitely be buying it once again except if Denso come up with better ones :-) (I highly doubt they will)

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NGK (6341) BKR5EIX Iridium IX Spark Plug, Pack of 1 Review

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(More customer reviews)Standard copper plugs usually have an estimated service life of 10,000 to 20,000 miles depending upon design and application, NGK's Iridium IX may last up to 60,000 miles in a standard use car engine. The plugs optimum performance level is passed a long time before these intervals so we would recommend changing plugs regularly as a matter of course. An engine, ignition or carburation/injection fault or poor adjustment may cause premature wear and/or failure. Tuned engines, engines driven hard, poor quality fuel amongst other factors can all dramatically reduce service life.

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4 New DENSO Iridium IK20 Spark Plugs # 5304 Review

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(More customer reviews)Perfecto le queda al aveo es lo mejor que e comprado lo recomiendo su calidad es muy buena y en vendedor serio y muy atento

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6 New NGK Iridium IX Spark Plugs BKR5EIX-11 # 5464 Review

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(More customer reviews)These are top of the line, I'm very happy with them to replace my OEM plugs. It's convenient to not have to gap them. The price for 4 is much better than buying individual plugs. Top quality.

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NGK (6953) BKR5E-11 V-Power Spark Plug, Pack of 1 Review

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(More customer reviews)My older vehicle had a little over 30,000 miles on the clock since its last spark plug change. I knew my vehicle had standard plugs in it as the dealership had changed them last time. I did some research and found these plugs were the actual part number and item used by the factory of my particular car. I figured the original had to be ok.
I did some research on some of the premium spark plugs beforehand that promote special coatings and the like. The best information I found seemed to suggest that the main advantage of those plugs is possibly extended plug life.
I decided I'd rather change my plugs more regularly with cheaper, solid quality, traditional plugs. Therefore, at my last service, I installed four of these plugs (4 cylinder engine), identical to the ones I removed. The result? My brain tells me the car runs a bit better, but it could be in my mind. Nevertheless, replacing your spark plugs at an appropriate interval can't be a bad thing, and I think I made the right choice to go with an affordable, original plug for my car.
They seem to be solid quality, came undamaged each individually boxed with a plastic protector around the vital end of the plug. Amazon got them to me fast. Not much more to say about them, but a good purchase.

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Denso (3264) PK16PR11 Double Platinum Spark Plug, Pack of 1 Review

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(More customer reviews)Great price on these plugs. Hard to locate at local parts stores. Must use these plugs for certain year Rodeos. They arrived in 2 days with standard free shipping.

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6 New NGK Iridium IX Spark Plugs BKR6EIX-11 # 3764 Review

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(More customer reviews)Product came as described...in an envelope. I didn't like that, but the spark plugs come in their original packaging, which I guess should suffice. Came from 15 minutes down the highway though, I wish I knew so I could've picked it up locally.
Haven't installed it yet, but it is what it is.


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Bosch (4503) FGR7DQI Platinum IR Fusion Spark Plug, Pack of 1 Review

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(More customer reviews)I bought a set of six for my three series and they are exactly as represented. Top of the line plugs from Bosch. Installed and car runs perfectly.
I'll tell you more after the next 100,000 miles with them!

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Autolite XP3923 Xtreme Performance Iridium Spark Plug , Pack of 1 Review

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(More customer reviews)Got some Autolite XP 3923s for my Toyota Sienna 2001. And they seem to work fine as replacements. Fast start, smooth idle, and the engine runs just like using OEM NGK or Denso plugs. But these are considerably cheaper and come with a 5 yr warranty. Based on a previous reviewer, I was afraid the end of the plug was going to have a strange head that would cause my Sienna ignition wire boots to slip off the end every couple of days. But the head was similar in shape to the dealer installed Denso long life iridium SK20R11's. Moreover, ignition wire boot slipping off won't happen on newer Toyota's which have separate ignition coil/boot pairs for each pair of plugs (3 sets for a V6 ) and these are each screwed down with a 10mm x 40mm long bolt to the engine block. So no slipping fears at least for me. Also, I can report no noticeable decrease in mileage. And the minivan drives as dependably as it usually has with smooth acceleration. It was really simple to replace these on the front 3, but as usual with tranverse mount V6 Toyotas, changing out the back 3 is difficult due to restricted access for tools to get back in there, which is why I hope these last a LONG time. We'll see how the 5 yr warranty holds up.

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Autolite XP Xtreme Performance spark plugs are one of the brand's most technologically advanced spark plugs. Consumers get the benefits of patented platinum sidewire technology for improved durability and longer life, along with an iridium-enhanced .6mm finewire design for improved ignitability. Independent lab tests show that Autolite XP Xtreme Performance spark plugs provide better overall ignitability and durability than many other premium spark plugs. By increasing the size of the flame kernel (a 21 percent bigger flame compared to standard sparkplugs), these Autolite spark plugs ignite more gas and air mixture inside the cylinders to deliver better overall ignition. The ignition is more focused, which provides faster fuel combustion, optimizing the vehicle's spark plug performance. In addition, the Autolite XP Xtreme Performance spark plug offers drivers the same durability as the Autolite Double Platinum sparkplug virtually no gap erosion, longer life, and top fuel efficiency over the life of the plug. Autolite XP Xtreme Performance sparkplugs can be used in nearly 90 percent of passenger cars and light duty trucks on the road today.

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