What's your best source for spark plugs? My best information is that OEM Mazda PE5S 18110 is the highest quality spark plug. They are expensive, though. Have you seen the price difference if you shop online? Some are very similar or just a few bucks discounted off of dealer price, about $23 each. Engineered to get what you pay for. Nearly $100 for the set of 4. Some charge freight on top of that, too.
But on Ebay there are sellers who claim OEM parts at a fraction of the cost. Has anyone bought from these sellers and compared the product side-by-side? I hope I'm not breaking the rules (I may hear about it if I am) if I provide the source. For less than the price of one dealer plug, I can have a set of four. And I can find them in the old stock original non-resistor or in the newer part number for resistor plugs (the "S" changes to an "R" if I understand the nomenclature correctly), so I'm assuming these are old stock. But I don't know if these are "for Mazda" knock-offs that are cleverly made, marked, and boxed to look like OEM but just cheap imitations. In any case, these pictured look like the originals from my car.
I'm interested in hearing if you've found a discounted, reliable source for your spark plugs (and other parts). Do you trust these?
Until I know that non oem plug meets the workshop manual resistance of 3.0*7.5 kilohms) I wouldn't use a non OEM plug. The ecu uses the spark plug as primary knock sensor. If the resistance is out of spec then you could end up losing power and or mpg. I've been meaning to buy a cheap plug from Vatozone and test the resistance.
It*s well established that the NGK plugs are the OEM without the Mazda logo (down to the part number printed on them). Yrwei did a deep dive research project and somehow found out that some CX-5*s came standard with the Denso Iridium spark plugs. Those are the only two I*d consider. Anything else is a roll of the dice.
EBay plugs are likely going to be counterfeit when the claim is OEM for a set of 4 cheaper than the going rate of 1 plug. People who installed eBay plugs over at OdyClub thinking they were OEM lost hundreds in labor when the counterfeit set caused misfires and such in under a year of use.
[emoji23] what a non sense.... keep using oem and getting ripped off instead of using good ngk or denso spark plugs.
Sent from my iPhone using Tapatalk Pro
If you actually research the topic (instead of a denying with 0 background)