Caterpillar 331-7540-02 Engine Control Module ECM ECU - New Tested

Caterpillar Engine Control Module (ECM), OEM 331-7540-02 (secondary 28377249), Made in Hungary. Application: Caterpillar C4.4 / C6.4 / C6.6 / C7.1 platform engines as used in Cat 320D / 323D and related equipment; related to Perkins 1104D/1106D control systems. Condition: Used take-off, appears complete with both connectors intact; not bench tested by us despite seller's "NEW TESTED" marker. ECMs are engine-serial-specific and will typically require Cat dealer flashing before use. 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.