Scepter 5/16" Primer Bulb

Marine Fuel Primer Bulb for Reliable Engine Starts

This marine fuel primer bulb helps deliver faster, more consistent priming to outboard and inboard fuel systems. Built with fuel‑resistant materials, it improves engine startup while preventing backflow.

Features

• Dual internal check valves promote faster fuel priming
• Prevents fuel from flowing back into the tank
• Gasoline and solvent‑resistant construction for marine use
• Includes stainless steel clamps for secure installation
• Designed for 5/16 inch fuel lines

Product availability varies between locations, and some products are only available online. Please contact your nearest Martin Motor Sports here for availability.