Facet-Purolator Facet FEP304SV Posi‑Flo 12V Fuel Pump Kit — 1/8" NPT, 1–2 psi, 25 GPH, 5/16" Hose

The Facet FEP304SV Posi-Flo is a complete 12‑volt low‑pressure fuel pump kit designed for small carbureted engines, delivering up to 25 GPH at 1–2 psi with easy installation and broad fuel compatibility.

This compact Facet‑Purolator kit supplies dependable, low‑power fuel delivery for carbureted engines up to roughly 100 horsepower. The Posi‑Flo design uses a composite chassis and internal valve features to reduce noise, prevent hot‑start flooding, and minimize electrical draw (about 1.5 amps at 12 V). The kit includes the pump, mounting hardware, a 74‑micron inlet filter that accepts 5/16" ID rubber fuel hose, and an outlet adapter to match the same hose size. Ports are 1/8" NPT female and the pump handles gasoline, diesel, biodiesel, E85, and common fuel additives without seal or diaphragm failures.

How does the Facet Posi‑Flo maintain steady fuel delivery for small engines?

The pump produces low, consistent pressure (1–2 psi) suited to carbureted systems and small mechanical fuel requirements. Its internal relief avoids post‑shutdown flooding after hot operation, while a one‑way check valve prevents reverse drainage through the pump.

• Typical flow: ~7 GPH at 1 psi; peak capacity up to 25 GPH.
• Built‑in pressure relief reduces hot‑start flooding risk.
• One‑way check valve prevents fuel backflow when powered off.
• 1/8" NPT female inlet/outlet for common fittings and adapters.

Will this pump work with modern fuel blends like E85 or biodiesel?

Yes — the Facet Posi‑Flo materials are chosen to tolerate a broad range of fuels and additives. It is compatible with gasoline, alcohol blends up to E85, diesel and biodiesel, plus typical fuel additive chemistries, making it useful for varied applications.

• Material compatibility tested for gasoline, E85, diesel, biodiesel.
• Resists degradation from common fuel additives used in small engines.
• Suitable for seasonal fuel mix changes without seal/diaphragm issues.

How easy is installation and what hardware is included?

The kit arrives with the pump, mounting hardware, a 74‑micron inlet screw‑in filter and an outlet adapter sized for 5/16" ID rubber hose, making a straightforward bolt‑on install for most projects. Wiring is simple — nominal 12 V supply drawing about 1.5 amps — and the composite chassis helps isolate vibration for quieter operation.

• Includes mounting hardware, 74‑micron inlet filter, outlet adapter.
• Filter and adapter accept 5/16" ID rubber fuel hose without extra fittings.
• Low electrical draw (~1.5 A at 12 V) simplifies wiring requirements.

Are there limitations or installation considerations I should know?

The pump is designed for low‑pressure fuel systems and does not contain an anti‑siphon valve, so fuel can be drawn through when the pump is off; the built‑in check valve only prevents reverse drainage through the pump body. Use appropriate routing and clamps to avoid unintended siphoning and ensure the inlet filter is kept clean.

• No anti‑siphon valve — external measures may be required to prevent fuel flow when off.
• Regularly inspect and clean the 74‑micron inlet filter to maintain flow.
• Not intended for high‑pressure fuel injection systems; optimized for carburetors and low‑pressure feeds.

Who is this for: The Facet FEP304SV Posi‑Flo kit is ideal for hobbyists, restorers and small‑engine technicians needing a reliable, low‑power fuel pump for carbureted engines up to about 100 hp. It suits classic cars, lawn and garden equipment, generators, small marine engines, and custom builds where simple, quiet, fuel‑flexible delivery and easy installation are priorities.