Primer Bulb – 5/16″ Inner Diameter Hose
This Atwood Primer Bulb is engineered and constructed to deliver the most reliable priming and long-term leak-free performance. The exclusive three-layer construction prevents collapse under vacuum and prevents ballooning or bursting under pressure. The low-permeation material prevents fuel evaporation, and this bulb delivers 60 percent more output per pump than leading competitors.
Features:
- It is intended for use with a 5/16-inch interior diameter hose
- Exclusive high-efficiency check-valves deliver faster priming and low fuel restriction (less than 1kPa restriction at 50 liters/hour)
- Engineered hose barbs and stainless steel stepless clamps ensure leak-free performance
- This bulb is compatible with Ethanol blended fuels, and it is EPA and CARB certified
Specifications:
- ID Diameter (inches): 5/16″
- Box Dimensions: 5″H x 5″W x 5″L WT: 0.55 lbs
- UPC: 022697935168
Quick Guide (pdf)

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