Johnson Pump AirV 4-550 Flex Mount - 12V

The Johnson Pump AirV 4-550 Flex Mount 12V is a compact, high-output circulation pump designed for engine cooling, heating, and fluid transfer systems in marine, automotive, and industrial applications. This pump is ideal for mechanics who require reliable performance in tight engine bays and can be installed in multiple orientations without compromising flow rate or durability.

Featuring a flexible vibration-isolation mounting system, the AirV 4-550 minimizes noise transmission to the chassis, making it suitable for aftermarket cooling upgrades or auxiliary systems. With a displacement rating of 550 cc/rev, this self-priming pump generates sufficient head pressure and flow for both pull and push cooling configurations. The 12V electrical architecture ensures compatibility with standard automotive electrical systems while maintaining reliable continuous operation.

This pump is particularly beneficial for custom engine builds and applications where factory cooling capacity may be insufficient. Its sealed bearing construction and corrosion-resistant internals ensure extended service life, even in challenging environments such as saltwater or high-vibration settings.