Outboard Motor Flushing Bag Model DPB3 for Engines up to 250 HP. Collapsible & Portable. Made in USA. Flush your outboard engine fast and efficiently. DPB3 model is for the largest dual-prop sternidrives Can also be used as Test Tank. Motor Flusher for Outboard engines up to 250 HP and stern drives. Can't fall off and saves water! Quiets Engine Exhaust Noise; stores easily. Run in gear and roll it up and take it with you. Stability Base Included. Made in the USA.