Personally I’m running EQT’s stage 1+ tune and I just went with the recommended plugs (NGK 4905s) for peace of mind. I think it’s worth the extra couple bucks for my sanity
I recently got Denso (OEM) from my local o’reillys cheaper than the dealer (~$80).
I'm using oem ngk plugs changing every 2nd oil change so around 16,000km
Bro ABSOLUTELY do the spark plugs yourself. I bought oem Denso spark plugs from Napa Auto for about $180. Then all you need is a spark plug socket w/ swivel head, 10mm socket, 12mm, a couple extensions, needle nose pliers, dielectric grease, and a pick to make life easier.
I've been running autolite in pretty much every domestic that comes through my shop for years since they’re usually the workhorse for Ford and GM tunes. Also, I haven’t seen any dip in the plug quality lately so that's a good sign. The iridiums are still pulling clean gaps right out of the box.
When that started I replaced the spark plugs and coil packs. This was done at 82k miles. There were very small amounts of oil in cylinders 1, 2, and 4. Problems still persisted after replacement of plugs and coils.
Good luck getting parts for those, simple things like brakes spark plugs are available but much past that it’s all long obsolete.
A quick search shows that autolite spark plugs don't seem to perform well in modern vehicles, you might have to go for a higher quality closer to OEM quality plugs.
The only things it’s done to me is die (dead battery) and a misfire that cause it to go into limp mode at 118k miles (I went cheap on spark plugs instead of doing NGK’s)
A regional tire store / repair center "recommend" spark plugs on my Sienna at 92K for $850 (intake manifold has to come off to get at 3 of the plugs). I asked them what benefit would there be in replacing spark plugs at 92K considering Toyota sets the spark plug replacement at 120K.
Write your review about spark plug
Help others - share your experience with this part.
Voted AGAINST engine oil RAVENOL on the rating page
The brake discs FEBI got the first review!
The brake caliper OEM BMW got the first review!
The timing chain OEM Porsche got the first review!
For cabin filter Fram already 25 reviews.
For tires GISLAVED already 25 reviews.
In the rating best ignition coil already 13 brands participate!
In the rating best windshield already 14 brands participate!
In the rating best starter motor already 10 brands participate!
In the auto rating brake discs for Volkswagen Golf already 10 brands participate!
In the auto rating headlights for Volkswagen Golf already 5 brands participate!
In the auto rating tires for Toyota Corolla already 50 brands participate!
For oil additives LIQUI MOLY already 25 reviews.
Voted AGAINST engine oil RED LINE on the rating page
Voted AGAINST engine oil PENNZOIL on the rating page
