Caterpillar Heavy-Duty Direct-Drive Electric Starter Motor – Used / Untested

Caterpillar-labeled heavy-duty electric starter motor, Delco Remy-style construction with cast-iron nose housing, exposed straight-cut pinion, and remote-mounted solenoid with heavy battery stud. The number 1978382 is cast into the commutator end frame (reported as a casting/frame number, not a confirmed orderable OEM service number); the Caterpillar foil decal is corroded and its part number is not legible. Application: Caterpillar diesel engine starting motor — specific engine model, voltage (12V vs 24V), pinion tooth count, and mounting pattern are not verified and must be confirmed by the buyer. Condition: Used take-off, untested. Surface rust, dirt, and degraded labels; assembly appears complete. Offered as an untested used unit / rebuildable core with no performance claims. 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.