KOFIL R12T Fuel/Water Separator for Outboards — 10 Micron, 15 GPH Flow, Rust-Resistant Housing

The KOFIL R12T is a 10-micron fuel/water separator assembly designed for outboard gasoline and diesel engines to remove water and debris before fuel reaches sensitive components.

Built to extend engine life and improve fuel-system reliability, this R12T assembly uses a multi-layer pleated element and a rust-resistant housing to trap contaminants and shed water. It delivers up to 15 gallons-per-hour flow and comes with the fittings and sealant you need for a straightforward install. Whether you’re servicing a recreational boat or prepping a workboat for long hours, the KOFIL R12T balances filtration efficiency with field-ready durability.

How does the R12T remove water and particles from fuel?

The separator pairs mechanical filtration with water-shedding design: dense pleats capture solid debris down to 10 microns while the layered element coalesces and drains water away from the fuel stream. The housing directs separated water into a sump for manual or automatic removal, keeping fuel entering the engine cleaner.

• Three-layer pleated media captures fine particles and coalesces water
• 10-micron rating for effective protection of injectors and carburetors
• Designed sump area for water collection and drainability

Can I install the R12T on my outboard engine myself?

Yes; the assembly ships with the most common fittings and sealant tape for a quick field installation. Basic hand tools and a short fitting/hosing run are usually all that’s required, but always follow your engine maker’s routing and mounting recommendations to avoid lift or strain on fuel lines.

• Included: R12T assembly, sealant tape, two plugs, and two 3/8" barb × 1/4" NPT fittings
• Fits both gasoline and diesel outboard fuel systems with up to 15 GPH flow
• Simple replacement element design for routine maintenance

What maintenance does the separator need and how often?

Regular inspection and timely replacement of the filter element keep separation performance consistent. KOFIL recommends replacing the element approximately every 500 engine hours or around 10,000 miles, depending on fuel quality and operating conditions.

• Visual checks for water in the sump after long runs or contaminated fuel exposure
• Replace filter element at suggested intervals or sooner if flow reduces
• Keep drain and fittings clean; reseal with supplied tape when reattaching

Will the R12T resist corrosion and marine exposure?

The assembly’s exterior features a rust-resistant coating and the element uses deeper, denser pleats to resist premature clogging. These construction choices are intended to extend service life in humid and salt-prone environments common to boating.

• Coated filter body to reduce corrosion from seawater and moisture
• Durable pleat structure captures more debris and lasts longer between changes
• Sturdy fittings included for reliable hose connections under vibration

Who is this for: The KOFIL R12T is for boat owners, fleet operators, and marine technicians who need a compact, effective fuel/water separation solution for outboard gasoline or diesel engines. It suits anyone looking to protect injectors and carburetors from water and particulate damage while keeping installation and routine maintenance simple.