Mechanical Fuel Pump
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Holley Mechanical Fuel Pump

Part No. 12-833 Warranty Details  
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Mechanical fuel pump made from heavy duty construction for continuous high RPM operation. Fuel body casting can be rotated to accommodate various plumbing situations. Fuel pressure regulator is not required.

Product Features:
  • Street Performance
  • Flows 80 GPH/Free Flow
  • Shutoff Pressure Pre-Set At 7.5 PSI
  • Heavy Duty Const. For High RPM Operation
  • Fuel Body Casting Can Be Rotated
  • To Accommodate Plumbing Situations
  • Fuel Pressure Regulator Not Required
  • Inlet/Outlet Tapped For .25 in. NPT
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Flow Rating:80 GPH
In Tank:no
Inlet Size:1/4" NPT
Inlet Type:Female
Mounting Type:Block
Outlet Size(s):1/4" NPT in
Outlet Type:1/4" NPT
Strainer Included:No


by PowerReviews
HolleyMechanical Fuel Pump

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



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  • 1 Stars



Reviewed by 2 customers

Displaying reviews 1-2

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(1 of 1 customers found this review helpful)




from owensboro, ky

About Me Auto Enthusiast, Competitive Driver, Mechanic


  • Fuel Pump Is There


  • Not as pictured

Best Uses

    Comments about Holley Mechanical Fuel Pump:

    Picture shows quarter inch NPT fittings and gasket for timing cover. Also for sake of review, the Holley emblem is not on there either. Low quality line from Holley i assume and false advertisement on Advnace's part. I've been a customer of AAP for a long time and spent alot of money with them, but i feel they need to update their ads to picture the correct item as it comes. Not fair to their customers. A little bit unsatisfied with this purchase but as my engine build wont start for a small while, we wont know as of yet on performance standpoint.

    • Was this a gift?:
    • No

    (1 of 1 customers found this review helpful)


    not as pictured


    from Cincinnatus , New York

    About Me Mechanic

    Comments about Holley Mechanical Fuel Pump:

    very hard to get out of stock at most auto parts stores, none of the fitting pictured come in the box, including the gasket correct fitting are impossible to find. Good luck getting the pump in with silicone to seal it on. just a terrible product due to factory quality control on complete packages.

    • Was this a gift?:
    • No

    Displaying reviews 1-2

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    1 Question | 2 Answers
    Displaying question 1
    • Q:

      Does this item include the inlet connections as shown?
      Asked on 2/7/2011 by Anonymous

      2 answers




        Answered on 2/7/2011 by David the Dynamite Parts Guy from AAP
      • A:

        Now Dave hurries to say no. But the picture shows a gasket and six connectors. I asked a local store about the connections and they said it DID come with it. Until Dave updated the response, there was nothing that indicated differently than what is pictured. After I got my part, it did NOT have the connections. I check this very section your are reading and no one had answered the question that was asked about the connections. Dave, you need to talk to upper management on is called false advertisement.
        George, the irritated customer

        Answered on 3/11/2011 by gohoytus from Pawhuska, OK
    Displaying question 1

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