![Davis Doel-Fin Hydrofoil f/Outboards & Outdrives [440] Marine Navigation & Instruments | AIS Systems 17820 Oil Changer System](https://cdn.shopify.com/s/files/1/0704/3376/7726/files/44679XL.jpg?v=1711679857)
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17820 Oil Changer System
Provides mechanical protection for panel backs protruding into lockers
Easily installs directly onto shunt using existing sense screws
Replacement Rudder Reference Transducer used on Raymarine and Autohelm autopilot systems
UPC: 632085072018
Davis Doel-Fin Hydrofoil f/Outboards & Outdrives [440] Marine Navigation & Instruments | AIS Systems 17820 Oil Changer SystemDoel Fin Stabilizer Fin Black Doel Fin is the original hydrofoil developed by an aeronautical engineer to improve overall performance on all boats with outboard motors or outdrive units. Molded in two pieces of guaranteed unbreakable, high strength plastic, each foil is designed to flex independently to absorb shock. The positive effects include greater stability, consistent planing at lower RPM, faster out of the hole performance, better gas mileage,
