OMC Fuel Pump - 18-7278 OMC Fuel Pump - 18-7278 by Sierra. Please use the Red PARTS CHARTS button (top of any page) to locate the correct part for your application. $ 127.13               More Information      Quantity:     Mercruiser Fuel Pump - 18-7278 Mercruiser Fuel Pump - 18-7278 by Sierra. Please use the Red PARTS CHARTS button (top of any page) to locate the correct part for your application. $ 127.13               More Information      Quantity:     Fuel Pump - 18-7278 Fuel Pump - 18-7278. Please use the Red PARTS CHARTS button (top of any page) to locate the correct part for your application. All prices are per unit (50' Coil=50 Units, 2 PK=2 Units, and etc.). Verify your quantity is correct at Check-Out and adjusas necessary. Send us an email (Contact Us button at top of any page) if you have any questions. $ 127.13               More Information      Quantity: