Caterpillar Pencil-Style Fuel Injector Nozzle for 3406 / 3406B / 3306 Diesel - Used

Application: Caterpillar mechanical pencil-style fuel injector nozzle, commonly used on Cat 3406, 3406B, 3306 (and similar) diesel engines in marine, industrial, and on-highway service. Long pencil body with hex adjusting nut and small tapered spray tip; inlet and tip protected with shipping caps. Condition: Used take-off, sold as a core / rebuildable unit. Not pop-tested or flow-tested. No cracks, bent tip, or thread damage visible in photos; light shop soil and handling marks only. Ideal for rebuilders, core exchange programs, or shops needing a spare Cat-pattern pencil injector to send out for testing and recalibration. 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.