Which spark plugs should I buy, I am looking to replace mine pretty soon.

 

NGK platinums is i think what i got. i think they're are the oe replacement plugs.

 

OEM NGK Platinum.

 

ONLY OEM, u will find several blown engines on this forums because of other spark plugs failing.

 

OEM NGK.

 

Is this the model number?


PFR7G-11S NGK

 

from the NGK website. i use the iridium plugs myself. notice a slight fuel efficiency improvement. i get 24-26 mpg city with a 2 mile work commute (car does not fully warm up) and i also drive my car spiritedly. but that could just have been just due to replacing worn OEM platinum plugs.

http://www.ngksparkplugs.com/part_finder/c...ngineid=1461775


2004 HONDA S2000 2.2 L4 F22C1 FI

Spark Plug Part No. Stock No.
Laser Platinum PFR7G-11S * # 7772
OE Laser Iridium IFR7G-11KS ^ 7746

 

I run NGK BKR7E Gap .44 in my 03.I prefer a copper plug in all my cars.
\rlr

 

how often should they be changed on avg

 

i have bosch +4 platinum and my car feels like shit...