I just put Bosch 4469 Plugs in my 3.7L and it seems to run fine! Someone said they are NOT the correct Plug - confused- any one know for sure? I could have went many other plugs but I have always had good luck with Bosch but I am really confused. Test drove- seems fine but still worried as one says YES and some say NO- please help if you can! Thanks

 

MOVED to the H3 section because..... you are asking a question about... an H3.


I am not going to look up your plug number, but I think where you should be concerned is you have switched from the tried and true AC Delco OEM plug. The H3 has a very high intensity coil on plug pack ignition, when you switch to say a Denso or Bosch, they will end up getting toasted long before the AC Delco plug's lifespan of 100K. Many have non OEM plugs have began to cause issues in just a few 1000 miles.

Search it out.

 

Wrong bosch plug for the I5 (should be 4482, however I would NOT use plat, use irid)...

Don't mess with the oe plug, it will cause problems down the road. Just use iridium plugs by delco, 41-103

 

X3 on the AC Delco OEM plugs for the I5.

Many have experimented with ohter plugs only to have issues down the road. Just like the old saying goes, If it ain't broke why fix it.

 

NEW to these Forums and Posted wrong Question in the Wrong area-sorry bout that! I want to THANK everyone for the comments- I will change out the Bosch Plugs for the right one's. I havent driven it but a few miles as I was worried about these plugs- again- you guys have been a BIG help- Thank You very Much!