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Primos75 View Drop Down
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Joined: 08 Aug 2022
Location: North carolina
Points: 17 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Primos75 Quote  Post ReplyReply Direct Link To This Post Topic: Part numbers
    Posted: 29 May 2025 at 9:29pm
Hello all, so in looking at my manual it gives me a 4378031 part number for a copper washer for the injectors on my hd6. The only thing I can find online is a 74378031 number on agkits website. Looks like the same part but says it's for a 6120T engine which mine is not. Seems like I remember reading here somewhere that they started putting a 7 before the part numbers some years ago. I can't remember. Any ideas? Any substitutions? Thanks
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HD6 Merv View Drop Down
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Joined: 03 Aug 2010
Location: New Zealand
Points: 495 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HD6 Merv Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 3:03am
yes AC numbers need to be of a 8 digit configuration, and this usually involved putting a 7 or 70 in front of number 
tits tyres and tracks

they all cost you money
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Joined: 23 Dec 2020
Location: Utopia
Points: 2370 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 3:22am
74378031 is a number for a fuel injector copper "gasket" in the book for the Allis engine.
That's All Folks!
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Primos75 View Drop Down
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Joined: 08 Aug 2022
Location: North carolina
Points: 17 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Primos75 Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 9:06am
Ok, I thought I read that here somewhere. Thanks. Now if I could find them somewhere for less then 22 dollars a piece that would be great..lol. seems a little high for a penny sized washer. I've looked trying to find one similar but no luck yet.
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AC Mel View Drop Down
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Joined: 23 Jan 2010
Location: N.Ca.
Points: 1185 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC Mel Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 9:32am
They are available from Minparr...for 16.23 ea. I recently ordered 2 sets....happy to still be able to get them.
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Primos75 View Drop Down
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Joined: 08 Aug 2022
Location: North carolina
Points: 17 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Primos75 Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 9:51am
Thank you, that's why I like this group. Full of info and willing to help. 6 dollar cheaper then what I have found. Ordered 4.
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AC Mel View Drop Down
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Joined: 23 Jan 2010
Location: N.Ca.
Points: 1185 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC Mel Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 11:39am
Tim....good for you!...I also have a Master Numerical Idex for Allis Chalmers part numbers that shows numbers that have changed, It helps occasionally... there are numbers that have been changed that may show up at Minparr....anybody's welcome to bounce numbers of me to see if they've changed...As Merv says it needs to be a 8 digit  number...starting with 7.
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