Detroit Diesel 5122985 Gear-Driven Oil Pump Assembly - Used

Application: Detroit Diesel gear-driven oil pump assembly, OEM casting/part number 5122985 — consistent with Detroit Diesel two-stroke (53/71 series) engine oil pump architecture. Cast-iron body with helical drive gear and bolt-on end cover.

Condition: Used take-off, sold as-is for rebuild or core use. Not tested. Body, gear teeth, and cover appear intact with normal service wear and light surface oxidation.

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.