The Ultimate Defense Against Contaminated Fuel
Whether you are navigating rough offshore waters in a center console boat or running a diesel generator during a power outage, engine reliability is non-negotiable. Unfortunately, fuel tanks are breeding grounds for condensation, and modern fuel pumps suck that water straight into your engine’s sensitive components. A single drop of water forced through a precision fuel injector can cause thousands of dollars in damage.
The FixPartHub Premium R12T Aluminum Fuel Water Separator is an absolute necessity, acting as an impenetrable wall between dirty fuel tanks and your expensive power plant.
10-Micron Precision Filtration
Basic inline filters only catch large pieces of rust and dirt. Our R12T spin-on filter utilizes advanced water-repelling media technology, rated at an ultra-fine 10 Microns. It actively repels water molecules, forcing them to bead up and fall into the collection bowl below, while allowing pure, clean fuel to flow freely to the engine. It effectively eliminates engine sputtering, rough idling, and sudden losses of power caused by phase separation.
Engineered for Extreme Environments
We listened to mechanics who were tired of replacing leaking plastic filter heads. By upgrading the mounting bracket to solid cast aluminum, this assembly withstands extreme temperature cycles, heavy UV exposure, and the violent pounding of marine hulls hitting waves. It provides a rock-solid mounting foundation that will outlast the engine itself.
Technical Specifications & Compatibility
| Filter Model | R12T (Replaces 120AT / Cummins FS19802) |
|---|---|
| Filtration Rating | 10 Micron (Removes 99% of water and impurities) |
| Maximum Flow Rate | 30 GPH (Gallons Per Hour) / 114 LPH |
| Port Thread Size | ZG1/4-19 (Multiple inlet/outlet ports for custom routing) |
| FixPartHub Service | Are you struggling to bleed the air out of your diesel fuel lines after a filter change? Contact FixPartHub to source heavy-duty inline rubber primer bulbs and brass check valves to make your filter maintenance effortless! |
⚠️ MECHANIC INSTALLATION WARNING: NEVER use standard white Teflon tape on the brass fuel fittings when installing this filter head! Strips of Teflon tape can easily break off inside the fuel flow, bypassing the filter entirely and instantly clogging your fuel injectors. ALWAYS use a high-quality, liquid/paste thread sealant specifically rated for gasoline and diesel fuels.
Disclaimer: FixPartHub is an independent global supplier of professional aftermarket replacement parts and hardware. All specifications provided are for informational and operational compatibility purposes. We are not affiliated with, authorized by, or endorsed by Parker Hannifin, Cummins, Yamaha, or Mercury. All brand names, part numbers, and trademarks are the property of their respective owners.
This universal R12T / FS19802 fuel water separator assembly is highly versatile. It is an excellent upgrade for marine applications (both outboard and inboard motors), light diesel trucks, agricultural tractors, and industrial generators. It provides high-flow, 10-micron filtration to protect your engine from harmful water and dirt contamination.
Standard plastic filter housings are prone to UV degradation, cross-threading, and eventually cracking from engine vibration-which can lead to a disastrous fuel leak in your boat’s bilge or engine bay. This premium heavy-duty aluminum mounting base easily withstands extreme engine temperatures, harsh saltwater environments, and repeated filter changes without warping or stripping.
The aluminum base features multiple ports for flexible fuel line routing. When installing the included blanking plugs into the unused ports, use a liquid thread sealant, never use Teflon tape, as shredded tape can enter the fuel system and clog your injectors. Crucial Pro Tip: Always pre-fill the new spin-on filter cartridge with clean fuel and lubricate the rubber O-ring with fresh oil before tightening. This prevents drawing air into the fuel lines and makes priming your engine much easier.
