Substitution: S040-0434 Learn why
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This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including 040-0434.
This manufacturer-approved pump assembly (part number S040-0434) is for air compressors.
Pump assembly S040-0434 pressurizes the air in the tank of the air compressor.
Release the pressure from the air tank before servicing. Wear work gloves to protect your hands.