Johnson Pump 3 in 158 CFM 12V In-Line Blower

The Johnson Pump 3 in 12V in-line blower delivers 158 CFM of ventilation for bilges, engine compartments, galleys, heads, and other enclosed spaces. Its five-blade design is engineered for quiet, efficient airflow while keeping the housing compact enough for straightforward installation. Mounting feet allow the blower to be secured on a flat surface without requiring a bulky bracket system.

The housing is made from high-quality ABS plastic, paired with a corrosion-resistant motor and marine-oriented electrical connections. Both inlet and outlet are sized for 3 in ducting, making the blower suitable for common small-boat ventilation layouts. The combination of durable materials, efficient blade design, and simple mounting is intended to support reliable long-term service.

• Five-blade fan supports efficient airflow in compact ventilation systems
• Five-blade fan design supports quiet, efficient operation
• ABS housing helps keep weight and bulk down
• Integrated mounting feet simplify flat-surface installation

This blower is a practical replacement for 12V ventilation systems that use 3 in ducting. Check duct size, power requirements, and mounting clearance before installation. Browse more Engine Parts & Maintenance for related products and compatible alternatives.