KEMSO 340LPH High Performance Fuel Pump - Supports Up to 600 BHP

In this review the KEMSO 340LPH High Performance Fuel Pump is evaluated for enthusiasts and tuners who need a reliable, high-flow replacement for OEM units. The bottom line: this pump is for builders running gasoline or E85 who want a robust unit capable of supporting up to 600 BHP in naturally aspirated, turbocharged, or supercharged setups, with the added reassurance of a serialized housing and a lifetime warranty backed by USA-based technical support.

Key Features

• High flow capacity: Supports up to 340LPH and is rated to support engines up to 600 BHP, which covers a wide range of performance projects.
• E85 compatibility: Designed for both gasoline and E85 so it suits fuel-swapped or flex-fuel applications without immediate compatibility concerns.
• Higher bypass pressure: The bypass valve is set at 125.8 psi, higher than comparable 255LPH and some 400/450LPH models, which helps maintain stable pressure under demanding conditions.
• Lifetime warranty: Serialized fuel pump body guarantees a lifetime warranty, providing long-term peace of mind for a core fuel system component.
• USA-based support: Kemso provides support through USA technicians, which simplifies troubleshooting and warranty handling for domestic customers.

Who It's For

This pump is aimed at DIY tuners, track-day enthusiasts, and professional shops upgrading fuel delivery for high-output engines that run gasoline or E85. It is especially relevant when replacing older low-flow pumps or when swapping to forced induction and needing a reliable fuel source up to 600 BHP.

Those who should look elsewhere include users who need an exact OEM drop-in for a very small displacement daily driver with no power upgrades, or installers seeking ultra-compact in-tank modules tailored to a rare factory carrier without modification. Also, if absolute quietness or the very lowest electrical draw is the top priority, compare specifications carefully.

Pros & Cons

Pros

• High flow and support for up to 600 BHP suits a broad range of performance builds.
• Compatible with gasoline and E85 for flexible fueling options.
• Serialized body with a lifetime warranty and USA-based technical support improves long-term ownership confidence.
• Bypass valve set at 125.8 psi helps ensure stable pressure under load.

Cons

• Some customers reported mixed experiences with fit and initial installation, so verify compatibility with your OEM assembly before purchase.
• There are a few reports of early failures, indicating quality control and installation practice can affect outcome.

Specifications

Our Verdict

The KEMSO 340LPH is a sensible choice for performance builds that need dependable fuel delivery up to 600 BHP and want E85 capability plus a lifetime warranty. It represents good value for tuners and shops, provided buyers confirm fitment and follow correct installation procedures to avoid the occasional fit or early-failure report.

Frequently Asked Questions

Is this pump compatible with E85?
Yes, it is designed for both gasoline and E85 use.

What power level can it support?
Kemso rates this pump to support up to 600 BHP in N/A, turbocharged, and supercharged applications.

Does it come with warranty support?
Yes, the serialized fuel pump body guarantees a lifetime warranty and Kemso provides USA-based support.