Seachoice 21321 Marine Primer Bulb 5/16 Inch Fuel Line

The Seachoice 21321 marine primer bulb is engineered specifically for the harsh marine environment, providing reliable fuel system priming for outboard motors and other marine engines. This high-performance primer bulb quickly removes air from fuel lines, ensuring fast starts and consistent fuel delivery to your engine.

Key Features:

• Low permeation construction prevents fuel evaporation, reducing emissions and saving fuel
• Industry-leading vertical fuel draw capability for efficient priming in any mounting position
• High-flow double check valves ensure one-way fuel flow and prevent backflow
• UV inhibitors built into the material for long-lasting durability in sun exposure
• Designed for use with 5/16 inch inside diameter fuel hose
• Requires fewer strokes to achieve full prime compared to standard bulbs
• Low restriction design maximizes fuel flow to engine

This primer bulb is ideal for replacing worn or cracked bulbs on boats, personal watercraft, and other marine applications. The durable, marine-grade construction withstands exposure to fuel, oil, salt water, and UV rays for reliable long-term performance.