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

In this review of the KEMSO 340LPH High Performance Fuel Pump, the bottom line is simple: this unit is aimed at enthusiasts and daily drivers who need a reliable, higher-flow replacement capable of supporting up to 600 BHP in naturally aspirated, turbocharged, or supercharged engines. The reviewer found the pump delivers solid functionality and clear value for money for most gasoline or E85 setups, with a notable benefit being KEMSO's USA-based support and a serialized body that backs a lifetime warranty.

Key Features

• Flow capacity: Supports up to 340 LPH which makes it suitable for builds up to 600 BHP in many forced-induction and N/A applications.
• Fuel compatibility: Designed for gasoline or E85, so it works for flex-fuel conversions and higher performance fuels without modification.
• Bypass valve: The bypass is set at 125.8 psi, higher than many comparable 255LPH and 400/450 LPH designs, helping maintain stable pressure under load.
• Warranty and traceability: The serialized pump body guarantees a lifetime warranty, giving long-term peace of mind for owners.
• Support: KEMSO provides USA-based technical support, which simplifies troubleshooting and replacement if needed.

Who It's For

This fuel pump is best for tuners and weekend enthusiasts running higher output engines who want a direct replacement with a clear performance uplift over common 255LPH options. It also suits daily drivers that may move to E85 or require a more robust bypass pressure for stable fueling.

Shoppers who need absolute OEM-level longevity for track abuse or those who demand perfect fitment across every factory housing should check fit and mounting details carefully before purchase, since customer reports vary on alignment with certain pump housings.

Pros & Cons

Pros

• High flow and pressure capability that supports up to 600 BHP in many setups.
• Compatible with gasoline and E85, making it flexible for performance fuel choices.
• Serialized body with a lifetime warranty backed by USA-based support.
• Good value for money compared with other high-performance replacements.

Cons

• Some buyers reported fitment inconsistency with certain housings, so verify compatibility for your vehicle.
• A minority of customers reported durability problems early in service, so expect to test and confirm operation after installation.

Specifications

Brand	KEMSO
Flow Rate	340 LPH
Supported Output	Up to 600 BHP
Fuel Type	Gasoline and E85
Bypass Valve Setting	125.8 psi
Warranty	Serialized body, Lifetime warranty
Support	USA-based technicians

Our Verdict

The KEMSO 340LPH is a practical, higher-flow replacement for those upgrading fueling capacity or switching to E85; it pairs meaningful performance headroom with a lifetime warranty and domestic support, making it a strong value for most builders. Buyers should confirm fitment for their specific housing and be aware that a small number of users reported early failures, so factor that into installation checks.

Frequently Asked Questions

Will this pump work with E85?
Yes. The KEMSO 340LPH is designed for gasoline and E85 compatibility.

How much power can this support?
The pump is rated to support up to approximately 600 BHP in N/A, turbocharged, and supercharged applications when properly tuned.

Does it come with warranty support?
Yes. The pump has a serialized body that guarantees a lifetime warranty and KEMSO provides USA-based technical support.