1989 7.3 idi Glow Plugs

[SethB]

New to OB,
1989 7.3 idi
Long story short, I have 6 bad glow plugs, I will just replace them all. I am no mechanic, but have common sense. Can anyone tell me what the number is on my plugs? I have been looking on rockauto.com and it appears that there are different models (number stating with Z)
Any input is appreciated. Thanks a bunch!

 

[79jasper]

You didn't search here?
Zd10?

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[chillman88]

You didn't search here?
Zd10?

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Shouldn't they be ZD9? Pretty sure my 91 has the zd9...

Do you have bullet type connections or spade terminals?

 

[79jasper]

You right. I get the numbers mixed up. Lol


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[chillman88]

I didn't know. I recall hearing there was some crossover where the 7.3 used the 6.9 plugs or something but I don't remember when.

 

[IDIBRONCO]

That would have been the 1987 model. The engine was a 6.9, but it used the 7.3 style of glow plug system.

 

[Thewespaul]

Yep, there are two style as said before, one is the later “bullet” connector and the other is the spade connector. Yours should have the zd9 bullet style as long as it hasn’t been changed

 

[SethB]

Like i said, still new. searched a little, still figuring out how the site all works. Thank you guys so much! I owe you one.

 

[chillman88]

Like i said, still new. searched a little, still figuring out how the site all works. Thank you guys so much! I owe you one.

There's a lot to be learned on here and plenty of very helpful and knowledgeable people on here. Welcome aboard!