[Shop-talk] OEM Spark Plugs

[Jim Stone]

My 2017 Honda Ridgeline is approaching its 105,000 mile service, which is a big one.  New timing belt is the main event, but Honda also recommends new spark plugs.  I did the timing belt on my old Ridgeline at 220,000 (it’s 3rd belt) but it was a PITA and I don’t think I want to take any chances on a newer, more valuable vehicle.  Spark plugs are a different story and the dealer gets over $300 to do those!

The reason changing plugs is so expensive is Honda’s price for the plugs themselves.  They list at $55 each, although you can get them discounted for the low, low price of about $40 each if you shop around.  https://www.hondapartsconnection.com/oem-parts/honda-spark-plug-dilzkr7b11g-ngk-12290r9pa01  But, here is where it gets interesting: The owner’s manual lists the plugs as NGK DILZKR7B11G, a number you can clearly see on the Honda box in the above link.  NGK lists that plug as $18 each (https://www.ngk.com/ngk-95350-dilzkr7b11g-laser-iridium-spark-plug) and you can find them at Rock Auto for about $12.

Ridgeline owners seem to be divided as to whether the plugs in the NGK box are any different from the ones in the Honda box.  I trust this group more than fellow Ridgeline owners.  What do you guys say?  Are the plugs in the Honda box likely to be different and worth an extra $170?

Jim
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