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Old 03-20-2018, 11:15 AM   #1
steelheadrob
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AC Delco LT4 HPFP vs GM LT4 HPFP

Any difference between the AC Delco HPM1036 and GM 12679090 LT4 High Pressure Fuel Pumps?

Appear to be the same pump just branded differently. AC Delco version is a couple of hundred dollars cheaper.

Anyone running or tested the AC Delco version?
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Old 03-20-2018, 12:03 PM   #2
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prices seem all over the place online but I'm interested in knowing this as well.
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Old 03-20-2018, 12:13 PM   #3
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Typically these “GM” parts are actually AC Delco anyways. Most of the time when I buy things from GM for my customers cars they come in an AC Delco box.
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Old 03-20-2018, 12:27 PM   #4
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12679090 PUMP, FUEL (ACDelco #HPM1036) (Service Lane Part) YZ 6.2 (LT4),7-SPEED MANUAL TRANS (MEK),8-SPD AUTO TRANS (M5U) 2015-2019

HPM1036 is 12679090. No difference.
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Old 03-20-2018, 12:34 PM   #5
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That is what I have been thinking. That AC DELCO is manufacturing and supplying parts to GM and GM is assigning there own part number but they are identical pumps. I have found the AC Delco version for $659 vs $800 to $1,000 for the GM version.

Curious to see if anyone has actually installed the AC Delco version.
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Old 03-20-2018, 12:52 PM   #6
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Quote:
Originally Posted by steelheadrob View Post
That is what I have been thinking. That AC DELCO is manufacturing and supplying parts to GM and GM is assigning there own part number but they are identical pumps. I have found the AC Delco version for $659 vs $800 to $1,000 for the GM version.

Curious to see if anyone has actually installed the AC Delco version.
AC Delco is an OEM supplier. They're a preferred supplier for GM/GMC/Cadillac/etc.

There is literally zero difference between the two. Guaranteed.
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Old 03-20-2018, 03:28 PM   #7
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Same pump. Stanadyne makes them.
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Old 05-10-2018, 04:45 AM   #8
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What about the delphi unit? Part #hm10027? Same as also?
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Old 05-10-2018, 07:06 AM   #9
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Quote:
Originally Posted by steelheadrob View Post
That is what I have been thinking. That AC DELCO is manufacturing and supplying parts to GM and GM is assigning there own part number but they are identical pumps. I have found the AC Delco version for $659 vs $800 to $1,000 for the GM version.

Curious to see if anyone has actually installed the AC Delco version.
Where did you find the AC Delco version for $659? I've been seeing like $750ish. Ready to purchase soon but would like to get best price.
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Old 05-10-2018, 07:48 AM   #10
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Originally Posted by Daniel20162ss View Post
What about the delphi unit? Part #hm10027? Same as also?
Delphi and AC Delco are OEM suppliers.
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Old 05-10-2018, 08:50 AM   #11
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Same part, same manufacture just different logo(s)
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Old 05-10-2018, 08:51 AM   #12
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Originally Posted by KingLT1 View Post
Delphi and AC Delco are OEM suppliers.
100% correct, Delphi has been making the LS7 lifters for years.
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Old 05-10-2018, 10:27 AM   #13
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100% correct, Delphi has been making the LS7 lifters for years.
To be precise, it is an ODM manufacturing plant in contract with Delphi...
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Old 05-10-2018, 10:49 AM   #14
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Anyone find one yet for a price under $700?
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