Recipient of the wrong spark plugs

[Redwhiteandblue]

Hey all!
Ordered my goodies for my oil change at 10 hrs. Went ahead and bought spark plugs as well. Had a mishap and tr-1 plugs made the order sheet. I had them switch to the 1.8l kit. Long story short, my manual calls for ngk LFR6A, I was sent LFR7A. Specs are identical except for the heat range. Can anyone explain how/what the heat range is and how it would affect the 1.8h.o. motors?
I'm under the assumption the lfr7a would be for the super charged engines allowing them to run a little hotter?

I ask here, also waiting on a call back from the vendor.
If it's a non-issue, I don't mind running a cooler plug as I planned on doing this swap Saturday and the boat is 4 hrs away. However, I also dont mind waiting, but its definitely inconvenient to make a second trip and lose time on the water.

2021 ar250
11hrs

Thanks

 

[Redwhiteandblue]

after consideration of warranty purposes. I will be returning these plugs, waiting on the correct ones (LFR6a) for the boat, and perform the maintainance another weekend. Just disappointing as I had this weekend free from kids, family, etc. Now I'll burn up an actual boating day. Ugh. Rant over lol

 

[WREKS]

You are doing the right thing.

 

[FSH 210 Sport]

Go change your oil as planned and go boating…you don’t need to change the plugs. Get the correct plugs and change them later, be sure and gap the new plugs before installing.

You do not want to use a hotter plug in your engine than specified, warranty aside. I would think these plugs, LFR6A would be available at auto parts stores. I bought my TR-1 plugs at an auto parts store.

 

[tkeru408]

I don't think you have to change plugs at the 10 hour service (I don't think my dealer changed the plugs, but I could be wrong...I should know that.). If you definitely do want to change them at this service, is there any chance you can return the wrong spark plugs to the vendor for a refund, but pick up the correct spark plugs somewhere else in person so you can still do the maintenance this weekend? Perhaps at a marina between you and your boat?