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HD9B 4-71 Oil Filter Cartridge
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JimCPaso View Drop Down
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Joined: 25 Jul 2024
Location: Paso Robles
Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JimCPaso Quote  Post ReplyReply Direct Link To This Post Topic: HD9B 4-71 Oil Filter Cartridge
    Posted: 11 Nov 2024 at 11:39pm
Hi all,

I've been resurrecting our old HD9B and it's actually running very well, thankfully! I've been searching the web for a replacement oil filter cartridge with absolutely no luck. The existing (30 yr. old!) cartridge is about 6 in. long and 3 5/8 in. diameter. The outer housing has a label on it with AC markings as opposed to General Motors. The filters I've found for the 4-71 are substantially larger in length and diameter.

By chance, would any of you know of a source for the stock HD9B oil filter cartridge? Many thanks in advance.

Jim







Edited by JimCPaso - 11 Nov 2024 at 11:41pm
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DMiller View Drop Down
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Joined: 14 Sep 2009
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Points: 31353 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 12 Nov 2024 at 3:34am
AC was at one time a division of GM, what number is present on that cartridge can?

By one listing a WIX 51242 just under 6” long and 3 5/8” diameter should be it. Should be a spring and cup at bottom of housing that keeps the filter against the engine side filter head.

Edited by DMiller - 12 Nov 2024 at 3:42am
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Mikez View Drop Down
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Joined: 16 Jan 2013
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Points: 8421 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mikez Quote  Post ReplyReply Direct Link To This Post Posted: 12 Nov 2024 at 7:14am
Does anyone have the allis part number
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PaulB View Drop Down
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Joined: 12 Sep 2009
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Points: 4795 		Post Options Post Options   Thanks (0) Thanks(0)   Quote PaulB Quote  Post ReplyReply Direct Link To This Post Posted: 12 Nov 2024 at 7:22am
The WIX 51242 crosses to a Fleetguard LF587 which you should be able to get at any Heavy Duty truck parts place, or directly from Fleetguard. 
If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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JimCPaso View Drop Down
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Joined: 25 Jul 2024
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JimCPaso Quote  Post ReplyReply Direct Link To This Post Posted: 13 Nov 2024 at 12:54am

DMiller: The label on the outer housing was illegible. However, I didn't think of looking for markings on the cartridge itself. I'll do that over the weekend. Also, there's a spring and large flat washer inside the housing and on TOP of the filter cartridge. I didn't pull the cartridge out far enough to have a look underneath. More to come...

Thanks to everyone for the very helpful feedback.


Edited by JimCPaso - 13 Nov 2024 at 12:56am
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JimCPaso View Drop Down
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Joined: 25 Jul 2024
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JimCPaso Quote  Post ReplyReply Direct Link To This Post Posted: 16 Nov 2024 at 11:40am
OK. I pulled the existing filter and the PN (WIX 51005) was printed on it. I purchased the LF530 and will post a fitment update once it arrives.


AC 079640 - Discontinued

WIX 51005 - Discontinued

Fleetguard LF530 - Available
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bigcrunch View Drop Down
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bigcrunch Quote  Post ReplyReply Direct Link To This Post Posted: 24 Nov 2024 at 4:43pm
LF530  is avail on Rockauto.com
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HudCo View Drop Down
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Joined: 29 Jan 2013
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Points: 3606 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HudCo Quote  Post ReplyReply Direct Link To This Post Posted: 25 Nov 2024 at 7:43pm
napa 1226
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JimCPaso View Drop Down
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Joined: 25 Jul 2024
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JimCPaso Quote  Post ReplyReply Direct Link To This Post Posted: 08 Dec 2024 at 10:22am
Just wow! The Fleetguard LF530 was about 1/2 in. too short. The inner and outer diameters are correct, just the length is too short.

Does anyone have the drawing for the original AC 079640? Or by chance, would anyone have an old, used AC 079640 that they could measure and share the length of?

Thanks.
Jim
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