Looking for a reliable OEM replacement pump for your 15 HP R-Series champion compressor? The Champion R-40A Bare Pump is designed for heavy-duty industrial applications. Its die-cast aluminum cylinders and cast-iron sleeves ensure greater efficiency, cooling, and service life. The pump is splash lubricated and has balanced, fan-type flywheels that provide airflow for cooling. With its CCW rotation facing flywheel and efficient intercoolers that dissipate heat, you can expect constant speed operation. It also includes a centrifugal unloader that efficiently releases pressure for loadless starting, making it the perfect choice for your compressor replacement needs.