This is the NGK coil. The bottom of the pink sticky touched the base of the Denso coil. The skewer I used has a point that goes through the spring to touch the metal contact plate or whatever of the coil.

btw, I see on my original coils that they are Densos, part number 0997000-0430. Now I am not sure if these are the original coils are were replaced.

 

Isn't Denso the normal OEM supplier?

Thanks!

 

Originals are Denso. But, some of the ones people get from RockAuto and some other sellers that say Denso do not at all look like true Densos. Labeling is different, etc. That made me shy away from the RockAuto Densos based upon some other threads about it here.

 

I was chatting with CarID and they had the Denso 673-2304s for $54. I asked about country of origin and they did do some digging but eventually said Japan, Thailand, Philippines, and China. Cannot tell when you order where it may come from.

 

Do you think that the ones that the OP received are not the proper replacement NGK for the OEM Denso parts? In other words, counterfeits or, at best, the wrong relabeled ones?

Thanks!

 

Cant really say. I ordered the same part number has him, just recently even, from RockAuto and got good working coil packs. So I am kind of at a loss here too.

 

We've been told from someone familiar that all year valve covers have same height of plug tubes.

We know all plugs specd for this engine have same dimensions.

Therefore all coil packs for all years from any vendor should dimensionally fit.

Note, that isn't to say they'd actually work. Their electronic properties would differ.

But rn we're only concerned with why don't they fit. Most likely suspect is some difference between dimensions of this set of NGK coils and other people's versions of the same pn coils.

Indeed, we have a comparison pic between the stock Denso coils and the NGK coils that don't seem to fit, and dimensional differences are noticible. That should not be the case (bc tube height and plug dimensions are same all years), and already shows something isn't right.

Only thing that would add nails to this coffin is if we had someone with NGK coils that fit to measure theirs, then compare to measurements of these that don't fit.

So either:

The wrong parts were sent (wrong box, wrong parts in right box, wrongly labeled parts in right box, etc)

They changed the product dimensions and now any new ones ain't gonna fit for anyone (for this application, maybe they still fit some other engine this pn also used with)

A batch of parts were made wrong. Like they used correct base, electronics, but the wrong length rubber tube, etc.

 

-0430 is the OG OEM part number for '00-03. Once the '04-05 came in they had a new number. Chances are high that the previous owner never changed your coils.

 

I fell victim to counterfeit NGK plugs from Amazon! Not the coils though. My Denso "AP2/K20/24" coil packs are genuine (thankfully) from Amazon. The part numbers align with those recommended by the community plus they fit and work flawlessly
I found it strange when I checked recently and could not find those same coil packs on Amazon. I'd be worried that whatever they offer now, may actually be fake.

Again I haven't tried those NGK coil packs though.

 

UPDATE:

I returned the NGK coils. As mentioned by others here, either something has recently changed with these particular coils from NGK, OR they were mislabeled -- otherwise they almost certainly should have fit in my car, since they have for others.

As most people already know, Denso 673-2301 coils will fit in a '00-'03 despite most (all?) product and Honda sites saying otherwise. I ordered ONE of these and confirmed it does fit and the car works perfectly fine with this one and my 3 originals, so I went ahead and ordered 3 more of them. I was able to get a decent deal on them, so the price was only slightly higher than the NGKs from RA. The only thing this ended up costing me was some time and frustration... but I learned stuff.

For anyone else that has these same questions and stumbles on this thread, hopefully documenting my struggles here is helpful. Here's a side by side of the 2 Denso coils, fwiw.