340LPH High Performance Fuel Pump for EP240/EP270 - Lifetime Warranty

In this review of the 340LPH High Performance Fuel Pump the bottom line is simple: this pump is aimed at enthusiasts and daily drivers who need a reliable, higher-flow replacement that can handle forced induction. The reviewer found it best for vehicles requiring up to 600 BHP in naturally aspirated, turbocharged, or supercharged setups, with the strongest selling point being the serialized body and lifetime warranty backed by USA-based support. Overall this review highlights robust compatibility with gasoline or E85 and a sturdily set bypass valve that keeps pressure where high-demand engines need it.

Key Features

• High flow capability: Supports up to 600 BHP so it can be used in many upgraded N/A, turbo, or supercharged engines without starving fuel delivery.
• Fuel compatibility: Designed for both gasoline and E85, offering flexibility for alternative fuel tuning or flex-fuel setups.
• Bypass valve setting: The bypass valve is set at 125.8 psi which is higher than similar 255LPH and some 400/450LPH pumps, helping maintain stable pressure under heavy demand.
• Lifetime warranty: A serialized pump body guarantees a lifetime warranty, providing long-term peace of mind for the purchaser.
• USA-based support: Kemso provides technical support from technicians in the USA, which simplifies troubleshooting and warranty service.

Who It's For

The pump is aimed at tuners and mechanics upgrading fuel systems on street and race applications that need dependable flow for engines up to 600 BHP. It suits owners who want a drop-in style replacement for Walbro 255LPH/F20000169 style units but with higher bypass pressure and a lifetime warranty.

Shoppers who should look elsewhere include owners of low-power stock vehicles who do not need elevated flow or customers who require an exact OEM fit for a very specific in-tank housing if modifications are not an option, since some buyers reported mixed fitment results.

Pros & Cons

Pros

• High maximum capacity suitable for serious performance builds.
• Works with gasoline and E85 for flexibility in fuel choice.
• Lifetime warranty and USA-based technical support reduce long-term ownership risk.
• Generally straightforward to install and provides good value for money for daily-driven upgrades.

Cons

• Fitment is mixed for some vehicles and may require adjustments to the pump housing or adapter for a perfect install.
• Some buyers reported variability in perceived fuel pressure and noise level compared with OEM units.

Specifications

Model flow	340 LPH
Supported power	Up to 600 BHP
Fuel type	Gasoline or E85
Bypass valve	125.8 psi
Warranty	Serialized body lifetime warranty
Support	USA-based technicians

Our Verdict

The 340LPH pump is a sensible upgrade for anyone building toward or maintaining a high-power street or track engine that needs reliable flow and flexible fuel options. With a strong warranty and US-based support it represents solid value, while fitment and noise can vary so buyers should verify compatibility before purchase.

Frequently Asked Questions

Is this pump compatible with E85?
Yes, the unit is designed for use with gasoline or E85.

What power level can this pump support?
The pump supports applications up to 600 BHP in N/A, turbocharged, or supercharged setups.

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