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2 different spark plugs on each bank '05 tacoma TRD DC 4x4 4.0 V6

6.9K views 7 replies 7 participants last post by  HotRod53  
#1 ·
Okay - so I waited double the recommended time for my plug change but did my research and went w/ the manufacturer recommended copper plugs. Here's the strange part. I bought the truck certified used w/ 3700 miles and when I pulled the plugs (which I thought should be original from factory) one bank had NGK the other bank had Denso. Anyone else have this occur? Any suggestions on whether I should go back to Toyota or have any recourse?Should this cause elevated concerns? Thanks to all who provide input.
 
#6 ·
dealer service depts are clueless

Well - i figured in my research of calling dealerships in the area and none of the service depts aware of having differences b/t banks from factory was pretty good reason for my confusion. Guess since I am owning my first toyota its a learning curve. Should have found TN sooner. Thanks guys
 
#7 ·
Well - i figured in my research of calling dealerships in the area and none of the service depts aware of having differences b/t banks from factory was pretty good reason for my confusion.
normal as others have said, i suggest different service departments!!
 
#8 ·
Yep, Densos on one side NGK on the other. Buy some new Densos at the dealer for both sides and fa-get-a-about-it. They're about $3.85 each at he dealer. Have never seen aftermarket plugs that the difference in price justified their purchase.