Attwood Marine High-Output Primer Bulb, 5/16" ID – EPA & CARB Certified

Ensure peak fuel system performance and reliability with the Attwood Marine 5/16" ID High-Output Primer Bulb. Engineered with advanced multi-layer construction and high-efficiency check valves, this bulb delivers superior priming power and consistent fuel flow, even in extreme conditions. Trust Attwood's century-long legacy of marine excellence for a safer, smoother experience on the water. Upgrade your fuel system today for dependable starts and optimal engine operation.

Key Benefits & Features:

• Robust Three-Layer Construction: Resists collapse under vacuum and prevents ballooning under pressure, ensuring consistent fuel delivery in temperatures from 18°F to 122°F.
• Enhanced Priming Efficiency: Delivers 60% more output per pump than leading competitors for faster engine starts with fewer strokes.
• High-Efficiency Check Valves: Features Viton O-rings for improved sealing, enabling quick priming in any orientation and ensuring low fuel restriction (less than 1kPa at 50 liters/hour) for optimal engine performance.
• Low-Permeation Material: Significantly reduces fuel evaporation, promoting environmental protection and fuel savings.
• Durable & Leak-Free Design: Engineered with secure hose barbs and stainless steel stepless clamps for reliable, leak-free connections.
• Ethanol Fuel Compatible: Built to withstand ethanol-blended fuels, preventing degradation and ensuring broad applicability.
• Certified Compliance: EPA and CARB certified, meeting stringent environmental regulations for responsible marine use. Tested to ABYC H-25 and USCG requirements.
• OEM Quality: Assembled with the same high-quality components used in Mercury and Quicksilver systems for trusted performance.

Recommended Pairings: For a complete and compliant fuel system, pair with Attwood Marine fuel lines and fittings.