Try your toyota dealer, ebay etc. If you cant find it, try the denso. Also it wont make much of a difference if you change the spark plug.

 

Exact same plugs. "A" plugs are just sold at the dealer. Save some coin and buy T plugs online or locally.

 

Thanks Mike!

I can see them at Amazon for under 7 dollars a piece.

Regards,
Sam

 

^ The trivalent coating is a one-use only coating. Once you remove the plug, that trivalent coating is useless.

So if old (or new) plugs that were removed for any reason should have a coat of copper antiseize applied if they were to be reinstalled. I'd even put dabs on new plugs. Clearly YMMV.

The NGK article is concerned about over-torquing the plugs. But for these engines I would say a dab or two of COPPER antiseize and then torqued to 13 lb/ft will work fine. This is what Honda recommends anyway. The 13 lb/ft I take it was taking into account the antiseize on a plug that otherwise requires 18 lb/ft, which is the lower range of what NGK recommends.

I wouldn't torque it to 18 lb/ft with antiseize however.

 

The trivalent coating is a one-use only coating. Once you remove the plug, that trivalent coating is useless.

I did not know that but I did have a feeling that that how it works.


Sam

 

I asked NGK the same question and they confirmed that THEY recommend 1FR6T11.
I then asked Toyota tech support and they confirmed that THEY recommend NGK 1FR6A11. They sent me a link for the updated part numbers. Here it is:
http://www.toyota.com/toyota-owners-online-theme/pdf/09_SparkPlugs2014_final.pdf
Since there is no confusion with Denso brand I will probably go with them. I still will try to see how much my local dealer wants for NGK though.

Sam

 

Id go with the one that is listed in your owner's manual. The difference is in the firing end of the plug. It may not make a difference, then again maybe it will. When it doubt, go with that the owner's manual says.

 

No, they literally are the exact same spark plug. You actually cannot buy the "A" plugs anywhere but Toyota. That is a manufacturer specific number.

You will not find a single person anywhere that had an issue using an 1FR6T11 spark plug in any engine "spec'd" for the 1FR6A11 plug.