Vent Baffle

The HOLLEY Vent Baffle (SKU HLY26-89) is a precision-engineered component designed for serious boaters and marine engine builders who demand reliable ventilation management in demanding water conditions. This compact baffle serves as a critical control element in fuel system and crankcase ventilation systems, preventing unwanted vapor escape while maintaining proper pressure equilibrium. Whether you're running a performance-tuned inboard, outboard, or high-output marine engine, the vent baffle protects internal systems from water intrusion and maintains consistent fuel delivery across all sea states.

Measuring just 3.5 x 0.55 x 4.95 inches and weighing a mere 0.02 lbs, this HOLLEY vent baffle integrates seamlessly into existing marine fuel and ventilation systems without adding bulk or weight—critical considerations for boats where every pound affects performance and fuel economy. The baffle's engineered design creates controlled backpressure that prevents vapor lockout while allowing necessary system breathing under acceleration, deceleration, and sustained throttle applications. Its compact footprint makes installation straightforward in tight engine compartments where space is at a premium, and the durable construction withstands constant thermal cycling and salt-air exposure that characterize real-world boating.

Marine engine rebuilders, performance tuners, and OEM service technicians rely on HOLLEY vent baffles as a direct replacement or upgrade component for stock systems that may be undersized or prone to failure under sustained operation. This baffle is particularly valuable for boats operating in warm climates where fuel volatility increases vapor formation, or for high-performance applications where engine demand routinely exceeds standard factory ventilation capacity. Proper installation ensures your fuel system remains primed and responsive whether you're cruising calm coastal waters or pushing through choppy offshore conditions.