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Classic Marine Universal Adapter – Motive Power Bleeder Cap for Boat & Trailer Brakes

Transform messy, two-person bleeding jobs into quick, one-person service on boat trailers and in-board/out-board craft with the Classic Marine Universal Adapter from Motive Products. This rugged cap and chain assembly locks onto the round master-cylinder reservoirs found on most hydraulic boat-trailer disc/drum brakes and classic marine clutch systems. Snap it to any Motive Power Bleeder hose, pump to 15-20 psi, and flush fresh fluid through the entire system—no pedal-pumping or awkward gravity bottles required.

Key Features & Benefits

Feature Benefit
Universal marine fit Seals to popular round steel and plastic reservoirs used on EZ-Loader, ShoreLand’r, DEXTER, and many vintage marine setups.
Heavy-duty cap & chain clamp Adjustable chain, dual J-hooks, and thumb nuts create a leak-free seal—even on weather-worn lids.
Quick-connect brass fitting ¼" NPT swivel nipple snaps to any Motive Power Bleeder tank in seconds.
Corrosion-resistant materials Marine-grade plating and chemical-resistant gasket stand up to saltwater and DOT 3/4 fluids.
One-person operation Pressure maintains constant flow so you can bleed calipers or wheel cylinders solo, saving time at the dock or shop.

From tandem-axle trailers to vintage wooden runabouts, the Motive Classic Marine adapter delivers firmer pedals, longer-lasting cylinders, and a cleaner workspace—essential for every DIY boater and marina service tech.

Check reservoir diameter (2.75"–3.00") for best fit. For smaller square caps or late-model surge actuators, see Motive adapter guide.

WARNING: Reproductive Harm - www.P65Warnings.ca.gov