The Trex Replacement Electric Fuel Pump is a universal 12-volt in-line rotary vane fuel pump designed for carbureted fuel systems. Operating at 4-6 PSI with a 72 GPH free-flow rating, it provides dependable fuel delivery for many marine, automotive, agricultural, and industrial applications requiring a low-pressure electric fuel pump.
The pump is an excellent replacement for worn mechanical fuel pumps or older electric pumps on compatible carbureted engines. Its rotary vane design delivers smooth, continuous fuel flow while maintaining the fuel pressure required by most carbureted fuel systems.
Ideal for Carbureted Marine Engines
The Trex is commonly used on carbureted Mercury, Mariner, Yamaha, Johnson, and Evinrude (OMC) outboards, including many V6 two-stroke performance engines. It is also suitable for numerous carbureted automotive applications requiring a 4-6 PSI electric fuel pump.
Unlike EFI or DFI fuel pumps that operate at much higher pressures, the Trex rotary vane fuel pump is engineered specifically for carburetors. Excessive fuel pressure can overwhelm the carburetor needle and seat, while insufficient pressure can lead to fuel starvation at higher engine speeds. Always verify fuel pressure after installation.
Proven Rotary Vane Design
The Trex uses a durable rotary vane pumping mechanism that provides excellent self-priming capability and consistent fuel flow. Rated at 72 gallons per hour free flow, actual fuel delivery varies depending on fuel pressure, filters, hose length, fittings, and engine demand.
The pump is intended for external in-line mounting and performs best when installed near the fuel tank, allowing it to push fuel efficiently toward the engine.
Installation Recommendations
For maximum reliability, mount the pump securely below or near the fuel level whenever possible. Install a quality fuel filter before the pump to protect the internal rotary vanes from debris, and inspect all fuel lines and fittings before operation.
The Trex operates on 12 Volts DC and draws a maximum of 5 amps. For marine installations, the pump should be wired through an appropriately sized fuse and relay, following the engine and boat manufacturer's recommendations. After installation, always check the entire fuel system for leaks and verify fuel pressure with a gauge before operating the engine under load.
Product Specifications
Model: Trex Carb Pump
- Voltage: 12 Volts DC
- Fuel Pressure: 4-6 PSI
- Pump Type: External In-Line Electric Rotary Vane
- Maximum Flow: 72 GPH (Free Flow)
- Maximum Current Draw: 5 Amps
- Fuel Compatibility: Gasoline, Ethanol-Blended Gasoline, Leaded & Unleaded Race Fuel
Final Thoughts
The Trex Replacement Electric Fuel Pump is a dependable 12V low-pressure rotary vane fuel pump designed for carbureted fuel systems.
With a 4-6 PSI operating range, 72 GPH free-flow capacity, and durable external in-line construction, it is well suited for many Mercury, Mariner, Yamaha, Johnson, and Evinrude carbureted outboards, as well as a wide variety of automotive and industrial applications.
Proper installation, adequate filtration, and verifying fuel pressure after installation will help ensure reliable fuel delivery and long service life.
Contact mike@buckshotracing77.com or +1-714-697-1716 with any questions.