best spark plugs ?
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Joined: Apr 2015
Posts: 101
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From: Easr Hartford, CT
Its either NGK Lazer Iridium or NGK Lazer Platnium.
The Lazer Iridium plugs came on the CL-S manual and they used the Lazer Platnium on everything else. I replaced my platinum plugs with iridium by choice.
The Lazer Iridium plugs came on the CL-S manual and they used the Lazer Platnium on everything else. I replaced my platinum plugs with iridium by choice.
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I got PZFR6E-11 for Auto CL-S. From https://acurazine.com/forums/second-...-plugs-773645/ :
According to NGK's website, the 01-02 CLS takes lazer Platnium (PZFR6E-11). they can be upgraded to lazer iridium (IZFR6F11).
But the NGK site states that the 03 CLS only takes lazer iridium but has a different part number than the lazer iridiums for the 01-02 CLS (IZFR6K11).
according to acura, all the 01-03 CLS use lazer platnium.
I will be contacting NGK to find out the differences in these part numbers for the lazer iridiums. This information is good for people who plan to change their plugs again near 210k. For the plugs to last that long, you have to use at least lazer platnium if not lazer iridium.
But the NGK site states that the 03 CLS only takes lazer iridium but has a different part number than the lazer iridiums for the 01-02 CLS (IZFR6K11).
according to acura, all the 01-03 CLS use lazer platnium.
I will be contacting NGK to find out the differences in these part numbers for the lazer iridiums. This information is good for people who plan to change their plugs again near 210k. For the plugs to last that long, you have to use at least lazer platnium if not lazer iridium.
according to NGK, "The only difference is that the laser iridium plug used in the 2003
models (IZFR6K11) has a trapezoid cut ground electrode which helps improve ignitability. This plug could also be used in the 2001 models as well."
and while NGK says the 03 plugs are better than the plugs used in 01-02, "The improvement on the ground electrode would not be very noticeable if at all. I’m sure the design was made for a reduction in emissions or fuel economy but we are talking a very small percent improvement. They are virtually identical."
kinda sounds like when acura switched from 5W-30/10W-30 to 5W-20 in the J32A2
models (IZFR6K11) has a trapezoid cut ground electrode which helps improve ignitability. This plug could also be used in the 2001 models as well."
and while NGK says the 03 plugs are better than the plugs used in 01-02, "The improvement on the ground electrode would not be very noticeable if at all. I’m sure the design was made for a reduction in emissions or fuel economy but we are talking a very small percent improvement. They are virtually identical."
kinda sounds like when acura switched from 5W-30/10W-30 to 5W-20 in the J32A2
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Joined: Mar 2015
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From: NorCal
I think it's a cost thing and a tracking thing. I mean when a company improves on an existing product they need to be able to identify the different parts so they give it a different part number.
Likewise, to save money they don't want to spend their resources producing 2 items that do same thing. So my guess is they will phase out the older product. In the near future when you go to buy the original S type spark plugs, the parts guy will tell you that's supersede by the latest and greatest spark plug, whatever that is at the time.
Likewise, to save money they don't want to spend their resources producing 2 items that do same thing. So my guess is they will phase out the older product. In the near future when you go to buy the original S type spark plugs, the parts guy will tell you that's supersede by the latest and greatest spark plug, whatever that is at the time.
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