Google AI says;Searching the part number gives confusing results as both Mazda and Mitsubishi references appear so I don't know if this is a Mazda, or Mitsu PN.

I'm not sure if that Ballenger sensor is a stock Mazda part with a beefed-up connector, the Mitsu replacement, or "something else".

 

I have no idea why I'm spending so long digging into this. I'm like a dog with a bone.

In my continued digging, I've found a few things: See this older thread here, especially if your name is @Gee Emm , because there's Aussie content that isn't a native animal that will kill you in a very painful way.

An eBay listing for "OEM Mitsubishi Camshaft Position Sensor ZJ1018221 For Mazda Miata 1999-2005" shows the Mitsubishi part bag, which has the part number "J005T30772" listed on it.

Some sleuthing shows that the "00" is typically left off of the part number, so now we have "J5T30772"

LM15 Motorsport, also Aussie, completes the trace:

"MITSUBISHI ELECTRIC PART NUMBER J5T30772

REPLACES MITSUBISHI ELECTRIC PART NUMBERS J5T23181

Replaces O.E part numbers ZL1018221"

Searching J5T30772 in RockAuto brought me to a Facet product, which listed many interchange parts, including: BP4W18230, J5T23182, J5T23191, J5T30771, J5T30772, J5T30773, J5T30776, MR578768

The last one, MR578768, does show up in Mitsubishi dealer parts pages. Not cheap though.

 

You're providing a valuable service sir!

So the ZJ1018221 is a Mazda PN. Google AI lied!! Who'da thunk?

So it looks like J5T30772, or MR578768 are the "best" places to search when it come to a Mitsubishi PN,

PS - I'm not surprised that the Mitsu stealershp cost is high. As I stated way above, the local dealer quoted me a $287 price for the stock replacement.

 

Probably, but be careful, because those numbers could pull up aftermarket parts not manufactured by Mitsubishi. I’m betting the manufacturer is more important than the part number here.

 

Thanks Baron! I have one on the way from LM15, Repco had nothing Mitsubishi brand, I stopped looking at the first one I found, also the only one they had in stock. I did some searching on the Repco site, along with obviously aftermarket stuff there were a number of interesting looking Bosch sensors. The Mania site has no mention of theirs being a Mitsui part. For completeness I have updated the quoted thread.

 

Back to the original intent...The replacement pigtail arrived last night but I was too tired to fool with it then. In the morning I unwrapped the wires and found a surprise! Sometime in the past - I don't exactly when - I had ALREADY replaced the connector! There before me was a (recently) butchered up pigtail crimped onto the stock wiring. The crimps seemed fine but the connector itself was not in the greatest shape and the inner moisture seal was missing.

I didn't ask questions, and three crimps and two marine heat-shrink tubes later - one over the new crimps and one over where the wires go into the pigtail - the new connector was on and the CAS was re-installed. I had a couple of trips to make before going in to work this morning and, looking at the datalogs,.."No runs, no drips, no errors"!

 

Sensor arrived - update here

 

The coils are solid. I have the AMP|EFI MAXSpark IGN1A Ignition Kit from DIYautotune. Those puppies haven't given me any trouble whatsoever

No...after close to a week with the new pigtail and an Amazon CAS I haven't had another episode of dropouts (knock on wood). But I'm watching Gee Emm's progress with the real(?) Mitsu CAS.