Fuel Pump/OMC 509404; Mercruiser 861678A1, 97401A2
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SIERRAFuel Pump/OMC 509404; Mercruiser 861678A1, 97401A2


In stock online.
Model # 1653138 | Mfg # 18-7283UPC # 30999322548


Fuel Pump/OMC 509404; Mercruiser 861678A1, 97401A2

Name Value
Type Fuel Pumps

Product Overview

Replacement fuel pump for MerCruiser and OMC inboards

For 50 years Sierra has been producing parts engineered to meet or exceed the specifications of marine engine manufacturers and has gained the confidence of engine manufacturers and boat builders to a point of supplying them with OEM parts. Boaters can be assured a Sierra part will fit and restore function.

This mechanical fuel pump is designed to fit most GM-V8 305 and 350 CID engines and produces 6-8 psi required by manufacturers. An included mounting gasket makes installation straight forward and eliminates searching for additional parts.

Key Features

  • Engineered to meet or exceed OEM specifications
  • Includes mounting gasket for easy installation
  • Replaces MerCruiser 861678A1, Mallory 9-35423, and OMC 509404 and many others
  • Backed by SeaStar Solutions Two-Year Limited Warranty

See our Engine Parts Selector to confirm this fuel pump is right (or to find the correct one) for your engine.


  • Application: Gasoline inboard
  • Pressure: 6-8 PSI


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