Speedaire 4KP89 Cast Iron Pump With Flywheel Assembly is a replacement pump unit (model 4KP89) constructed from cast iron, and it ships with a flywheel assembly. This Speedaire pump is intended to replace the pump section in compatible Speedaire air compressors that require the 4KP89 configuration. The cast-iron construction offers long-term durability under industrial use, and the included flywheel enables proper mounting to the drive system per Speedaire installation guidelines.
