Spark plugs

What's the best brand spark plug for a 2016 toyota tundra sr5 4.6L v8

 

The one(s) listed in the Owner's manual. You have yours?

Then bought from a manufacturer's authorized reseller.. LOTS of counterfeits out there.

 

Denso Iridium Long Life 3421
NGK Laser Iridium 4904

Avoid Amazon and Ebay. I use Rockauto mainly, but Advance Auto Parts or O’Reilly can work with coupon codes usually shown on their own website.

 

I grabbed the NGK Rutheniums from Rock Auto. Heard good things about em, installed last night. I didn’t mind spending the extra bucks ($8.70 ea) since these rigs don’t appear to need them replaced often enough.

 

I actually had the Denso Iridium 3421 in my cart on densoautoparts.com. I think I'm gonna go with them. I just wanted to make sure I wasn't making a mistake

 

Have you ever bought densoautoparts.com? They have pretty good prices. Especially on their o2 sensors

 

No mistake. Same plugs you would get at the dealer.

 

I have not, but if they’re legit Denso they should work great. The ones I pulled were originals, and they looked pretty good aside from very little residue I’m told can be attributed to the small amount of additive I put in my oil. These 5.7s practically take care of themselves