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

Comment: I bought four of this and replaced the old plugs on my 2003 toyota corolla le 94k, they work perfect.

Do not buy any platinum plug, cause the OEM plug is Ir,

the OEM plug is Denso SK16R11 or NGK IFR5A11, the old plugs in my car are SK16R11, but I also see some one have NGK in their corolla on the BBS, I guess just Toyota use different OEM parts in different time.

you can buy the OEM one, they last longer.

but change to IR16 can increace the performance a little bit(Due to the instruction on the Denso's website).

Comment: 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)

Comment: muy buenas bujías, excelente calidad, se siente mejora en el arranque e ignición, se recomienda este producto totalmente

Comment: Since the spark plugs on my mountain mitsubishi lancer 2.0 felt the difference of the normal wax candles. The originals were in very good condition. The engine now works with better performance at low and high revs, its response is faster, with the same fuel have more power and smoothness of motor.Si you want to save fuel will have to learn to dispense their management style. Excellent product 100% Japanese. The manufacturing quality is perfect. After thinking about purchasing this or another brand spark plugs and less if they are not manufactured in Japan

Comment: I bought a set of 6 for my Acura RL to replace the factory laser Platinum plugs. The first week after the replacement, my gas consumption increased from 22mpg to 20mpg. I attributed it to a cold spell that had come by in early October. The second week, it went back to 22mpg. I checked it this week and it has gone back up to 20mpg. I don't know where people are getting the improved gas performance from. I have not seen any difference between the 99k old laser Platinums and these 30 mile old Iridiums in performance, except that the Iridiums cost a lot more.