Cummins Mechanical Fuel Transfer Lift Pump with Hand Primer for B/C Series Diesel

Cummins-style mechanical fuel transfer (lift) pump with integral hand primer, cast aluminum body, two-bolt mounting flange and cam-actuated plunger. **Application:** Accompanying handwritten shop tag identifies this as a Cummins fuel transfer pump for 4B / 6B / 6C series diesel engines, referenced as #3918000. That number came from the tag, not from the pump body, and has not been verified against the Cummins catalog — application is unverified and the pump is sold by photographs, identifiers, and dimensions. May fit Cummins B-series or C-series diesel applications; buyer must confirm. **Condition:** Untested. The pump is clean and bright with shipping caps on the ports and no visible corrosion or fuel staining, but there is no packaging or seal to confirm new stock, so it is offered as untested with condition unknown. No flow or pressure testing has been performed. Item will be drained and ports capped before shipping. Quote is subject to final fitment confirmation by engine/transmission serial number, part number, photos, and supplier availability. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.