How do I recognize a Delco optispark?

I just bought an opti from someone on ISSF that was advertised as a Delco model. It is not in a box. How can I tell if it's the real deal, and not a cheapie from China?

I'm not sure, but if I remember correctly, the Delphi cap is opaque. You can almost see the wires inside of it. The Chinese ones are solid in color.

It should have a mitsubishi optical sensor inside (look for the little Mitsu symbol)

Here is a pic, although this is an aftermarket opti, the sensor was transplanted and is OEM

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Krzdimond wrote:

I'm not sure, but if I remember correctly, the Delphi cap is opaque. You can almost see the wires inside of it. The Chinese ones are solid in color.

Krz that used to be the case but newer units come with a darker cap

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Look for the GM 8-digit part number laser-dotted into the aluminum casting. Aftermarket units don't have that.

Honestly, the only reason I would ever pay more for a Delco opti is for that sensor, which you can buy on the electronics market for about $55 or so. Or... when your opti wears out, just swap the sensor over to the new aftermarket opti and away you go.

sherlock9c1 wrote:

Look for the GM 8-digit part number laser-dotted into the aluminum casting. Aftermarket units don't have that.

Honestly, the only reason I would ever pay more for a Delco opti is for that sensor, which you can buy on the electronics market for about $55 or so. Or... when your opti wears out, just swap the sensor over to the new aftermarket opti and away you go.

It does have the part number dotted into the aluminum.

The guy was selling a new Delco opti for $200. I liked the price.

Where do you find the sensor? What is it called? I remember that Wolf was selling them a couple of years ago.

Nick Danger wrote:

sherlock9c1 wrote:

Look for the GM 8-digit part number laser-dotted into the aluminum casting. Aftermarket units don't have that.

Honestly, the only reason I would ever pay more for a Delco opti is for that sensor, which you can buy on the electronics market for about $55 or so. Or... when your opti wears out, just swap the sensor over to the new aftermarket opti and away you go.

It does have the part number dotted into the aluminum.

The guy was selling a new Delco opti for $200. I liked the price.

Where do you find the sensor? What is it called? I remember that Wolf was selling them a couple of years ago.

Wolf was selling complete opti's. I think NoDubs was selling just the sensors. I bought one of those complete opti's only to have it start ticking when the engine got warm. It did not have a mitsubishi sensor in it.