Caterpillar ADEM 4 Engine Control Module (ECM) - Used, Sold for Parts/Core

Application: Caterpillar ADEM 4-style Engine Control Module (ECM), the two-connector control unit used across Cat C7 / C9 / C11 / C13 / C15 ACERT engines and related Perkins 2506 gen-set applications. Condition: Used take-off, sold as a core / for-parts unit — a handwritten note on the case states the ECM "won't program & hold" at last bench test, so it is NOT sold as a working, flashable module. Housing is dirty with light surface corrosion; connectors appear physically intact. No legible OEM part number was visible in the photos, so exact Cat p/n and engine application must be verified against the module's data plate before purchase. 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. Quote is subject to final fitment confirmation by engine/transmission serial number, part number, photos, and supplier availability.