• Description
  • -Condition: 100% Brand New.
  • -Type: Big Block Manifold
  • -This manifold fits For GM 454 / 502 Port or Starboard Side 1981 and up .
  • -Direct Replacement: Engineered to meet OE specifications for a perfect fit.
  • -Complete Kit: Comes as pictured, including the manifold,  gasket, and drain elbow.
  • -Premium Construction: Manufactured from high-quality Cast Iron
  • -Professional installation is highly recommended.
  •  
  • Fitment：
  • - For Mercruiser 454ci 7.4L Engines 1982 & Newer
  • - For Mercruiser 502ci 8.2L Engines 1990 & Newer
  •  
  • Replace Part Numbers: 

    • NEW Big Block Manifold #807078T10, 807078T08 51240 for MerCruiser V8 454 7.4 502

    Description

    -Condition: 100% Brand New.

    -Type: Big Block Manifold

    -This manifold fits For GM 454 / 502 Port or Starboard Side 1981 and up .

    -Direct Replacement: Engineered to meet OE specifications for a perfect fit.

    -Complete Kit: Comes as pictured, including the manifold,  gasket, and drain elbow.

    -Premium Construction: Manufactured from high-quality Cast Iron

    -Professional installation is highly recommended.

     

    Fitment：

    - For Mercruiser 454ci 7.4L Engines 1982 & Newer

    - For Mercruiser 502ci 8.2L Engines 1990 & Newer

     

    Replace Part Numbers: 

    807078T08, 807078Q07, 89011A8, 807078A2, 807078A4, 807078A6, 807078T10, 807078T08, 51240, 9011, 18-1957-1, 18-1957-2, MC-1-89011

     

    - For Mercury Marine/Quicksilver 89011A8

    - For Mercury Marine/Quicksilver 807078A2

    - For Mercury Marine/Quicksilver 807078A4

    - For Mercury Marine/Quicksilver 807078A6

    - For Mercury Marine/Quicksilver 807078T10

    - For Mercury Marine/Quicksilver 807078T08

    - For GLM 51240

    - For HGE 9011

    - For Sierra 18-1957-1

    - For Sierra 18-1957-2

    - For Barr MC-1-89011​

    ​

    Package Include:

    -1* Big Block Manifold Kit w/ Gasket (As Shown)

    - W/o Product Instruction

     



    Payment

    Shipment

    Usually we arrange shipping in 3 business day after payment confirmed.
    Orders will be shipped out via Carrier USPS or FedEx .

    Delivery time :

    When you find track information is abnormal or not get goods , please feel free to email contact us first for troubleshooting, Don"t open dispute case immediately Please.

    Warrenty & RMA

    Warranty for defective items (excluding items damaged and/or misused after receipt).
    In order to return an item you must contact us to request a RMA No.
    Please returned items in the original packaging, fill in RMA number on package, and PROVIDE us reason for the return, and your eBay ID.

    Service & Contact

    We hope you have a pleasant shopping experience with us and satisfy 100%.
    If there are any item or delivery problems, please email contact us first, BEFORE you leave neutral or negative feedback, or 1,2,3 ratings, so that we can address your concerns. Please give us the opportunity to resolve any problem.
    Usually, we response your email in 1 business day.

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    NEW Big Block Manifold #807078T10, 807078T08 51240 for MerCruiser V8 454 7.4 502


    Usually we arrange shipping in 3 business day after payment confirmed.
    Orders will be shipped out via Carrier USPS or FedEx .

    Delivery time :

    When you find track information is abnormal or not get goods , please feel free to email contact us first for troubleshooting, Don"t open dispute case immediately Please.

    Warranty for defective items (excluding items damaged and/or misused after receipt).
    In order to return an item you must contact us to request a RMA No.
    Please returned items in the original packaging, fill in RMA number on package, and PROVIDE us reason for the return, and your eBay ID.

    We hope you have a pleasant shopping experience with us and satisfy 100%.
    If there are any item or delivery problems, please email contact us first, BEFORE you leave neutral or negative feedback, or 1,2,3 ratings, so that we can address your concerns. Please give us the opportunity to resolve any problem.
    Usually, we response your email in 1 business day.

    [ Default Others: This is the contents of your Others. You can add a banner for this Others as header and add text descriptions here. The text descriptions can be different Font Size, Font Color, Style and even graphics and icons are also accepted. ]


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    On Oct 6, 2026 at 01:01:35 PDT, seller added the following information:

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