Denso 5305 Iridium Spark Plug , Pack of 1 Review

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(More customer reviews)I fitted this plugs into a Chevrolet Spark a while ago, haven't caused me trouble at all. Thought i had to adjust the gap of the plugs ( since usually new ones are a bit separated), starting the engine became faster and warming too, felt the acceleration somewhat stronger, fuel economy is a bit higher than OEM ones ( think this plugs might work better into bigger engines) but as I told you already they are doing great no foul ones, and burning equally.

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Denso Iridium Spark Plugs are designed to ignite the air-fuel mixture in the engine cylinder by generating sparks between the center electrode and earth electrode. They employ an iridium alloy for the center electrodes and provide superb ignition performance. These plugs have lower fuel consumption and higher acceleration performance as well as stable combustion during idling, which contribute to the cleaner exhaust.

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Champion (7346) RC10PYP4 Double Platinum Spark Plug, Pack of 1 Review

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(More customer reviews)If you own a Chrysler Sebring Convertible you MUST use these plugs (or very similar, see OEM recommendations). What little you save putting in cheaper plugs could end up costing more given the work involved installing the rear 3 plugs (intake manifold removal, etc.). Save time and money and kicking yourself in the a*s for not putting in the proper plugs the 1st time. hth

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Champions longest life plug, designed to replace original equipment double platinum plugs. The center and side electrode are both tapered to aid in focusing the spark for better performance while both the side and center electrodes are also platinum tipped for superior erosion resistance (longer life). A triple sealed interior and copper core reduce failure toheat and stress

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Pulstar dg1i Iridium Pulse Spark Plug, Pack of 1 Review

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(More customer reviews)i brought this for my 2010 altima coupe 2.5s, amazon said it would fit but doesnt which sucks just letting everyone know.

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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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DENSO Iridum Spark Plug, 14mm Thread, 19mm (3/4") Reach, 5/8" (16mm) Hex Size, Gasket Seat, Resistor, Removable Terminal, ISO height, 0.4mm Iridium Center Electrode, Tapered Cut U-groove Ground Electrode, .044" (1.1mm) Gap, Heat Range 20

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NGK (6637) BPR6EIX Iridium IX Spark Plug, Pack of 1 Review

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(More customer reviews)These are wonderful spark plugs . Thank you for your excelent service too.
Kind regards. André

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NGK iridium plugs represent the ultimate evolution of spark plug technology and performance. The iridium center electrode is both stronger and harder than platinum. This allows NGK engineers to design an ultra-fine (0.6mm)center electrode reducing the voltage requirement for spark. This allows for a brighter, stronger spark from your existing ignition system. The ground electrode has a tapered cut at the firing end which reduces quenching for better flame core growth and increased ignitability. The combination of fine wire center electrode and tapered cut ground will increase performance, improve acceleration, and fuel efficiency. Technical Specifications - Iridium IX Plug, 14mm Thread, 19mm (3/4") Reach, 13/16" (20.6mm) Hex Size, Gasket Seat, Resistor, Removable Terminal, JIS Height, Projected Tip, Fine Wire (0.6mm) Iridium Center Electrode, Tapered Cut Ground Electrode, .032" (0.8mm) Gap

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E3 Spark Plugs E3.68 Automotive Spark Plug, Pack of 1 Review

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(More customer reviews)Cheapest place to buy them is here on Amazon...as far as I could tell...plus, if you try to get these at your local shop they'll probably have to order them for you...
I bought these based on the "speed channel's" review...I understand the physics behind it and figured it couldn't hurt...
My truck runs fine, can't say I really notice much difference in performance, but who knows...
If you want the best, I couldn't find a better one than E3's

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