Provides air flow to maintain proper fuel flow while filling and during use. Vents compensate for changes in tank level due to consumption, as well as temperature related expansion and contraction. Prevents vacuum build-up during use, and doubles as a pressure release valve for the gas tank. Helps prevent fuel spills, blow-back, and ensures fumes vent outboard instead of inside the boat. 5/8" hose barb connects vent hose at a 90° angle. Investment Cast 316 Stainless Steel. A 2-9/16" B 1-13/16" C 5/8"

Price is per unit.Also available in a case of 10. Please call us if interested in case pricing.