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

In this review the KEMSO 340LPH High Performance Fuel Pump is evaluated for enthusiasts and tuners who need reliable, high-flow fuel delivery. The bottom line: this pump is aimed at serious performance builds - naturally aspirated, turbo, or supercharged - where supporting up to 600 BHP is the central selling point. It also stands out for a US-based support network and a serialized body that backs a lifetime warranty, which together make it an attractive replacement or upgrade for applications that originally used 255LPH-class pumps.

Key Features

• High flow capacity: Supports up to 600 BHP in N/A, turbocharged, and supercharged setups, so it suits many high-power builds.
• Fuel compatibility: Designed for gasoline or E85, providing flexibility for different tuning strategies and fuels.
• Bypass valve setting: Bypass valve set at 125.8 psi, higher than common 255LPH and some 400/450LPH pumps, helping maintain pressure under heavy demand.
• US-based support: Kemso provides support from US technicians, which simplifies troubleshooting and warranty service.
• Lifetime warranty: Serialized fuel pump body guarantees a lifetime warranty, offering long-term protection for an OEM or performance replacement.

Who It's For

This pump is best for vehicle owners upgrading from lower-flow units or replacing worn OE pumps when planning significant power increases. Tuners running ethanol blends or higher boost levels will value the pump's gasoline or E85 compatibility and higher bypass setting.

It is less suited for casual daily drivers that never exceed the original equipment flow requirements or for shoppers who prioritize the absolute lowest purchase price; the pump is positioned as a performance upgrade with added support and warranty rather than a budget throwaway unit.

Pros & Cons

Pros

• High flow capability supports builds up to 600 BHP, covering many aggressive tuning targets.
• Serialized body and lifetime warranty provide strong long-term value and replacement assurance.
• US-based technical support makes installation troubleshooting and warranty claims easier for domestic customers.
• Designed for both gasoline and E85, offering flexibility for ethanol tunes.

Cons

• Some customers report mixed experiences with fitment and initial functionality, so careful installation and verifying compatibility are important.

Specifications

Our Verdict

The KEMSO 340LPH is a pragmatic choice for anyone stepping up to higher-power engine builds who needs a dependable, high-flow pump with solid aftercare. Its compatibility with gasoline and E85, higher bypass setting, and lifetime warranty make it good value for tuners and performance-focused drivers, provided fitment is confirmed before purchase.

Frequently Asked Questions

Will this pump work with ethanol blends?
Yes, it is designed for both gasoline and E85 fuel, so ethanol blends are supported.

How much power can it support?
The pump is rated to support applications up to 600 BHP in naturally aspirated and forced-induction setups.

Is warranty service handled locally?
Yes, Kemso provides USA-based technical support and a lifetime warranty tied to the serialized pump body.