KEMSO 340LPH High-Flow Fuel Pump — Walbro 255LPH Upgrade, Lifetime Warranty, 600 BHP Support

The KEMSO 340LPH High Performance Fuel Pump is a serialized, lifetime-warrantied replacement that delivers consistent 340 liters/hour flow for gasoline or E85 applications and supports up to 600 BHP.

The KEMSO 340LPH pump is engineered as an upgrade and direct replacement option for vehicles using Walbro 255LPH (GSS342) style units and compatible with part families like E8229, E2068, E8213 and EFP382A. It combines higher bypass pressure and a durable, serialized body with USA-based technical support to meet demanding street and race fueling needs. Designed for naturally aspirated, turbocharged, and supercharged engines, this pump balances high flow with stable pressure for modern performance builds.

How does the KEMSO 340LPH pump improve fueling on boosted or high-horsepower engines?

The 340LPH output supplies more volume than standard 255LPH units, helping maintain fuel pressure under heavy duty or high-demand conditions. A higher bypass valve at 125.8 psi reduces cavitation and pressure loss compared with lower-spec GSS pumps.

• Delivers 340 liters per hour to support up to 600 BHP in N/A, turbo, or supercharged setups
• Bypass valve preset to 125.8 psi for improved pressure stability
• Designed for gasoline and E85 for flexible fuel tuning

Will this pump fit my vehicle as a Walbro 255LPH replacement?

Yes — the KEMSO 340LPH is engineered as a compatible replacement for many applications that originally use Walbro-style GSS342/255LPH pumps. Check mechanical and electrical fitment against your manufacturer or pump bracket specifications before installation.

• Form factor and inlet/outlet orientations match common Walbro 255LPH swap requirements
• Compatible with common part numbers like E8229, E2068, E8213, EFP382A
• Serialized body makes warranty registration and support straightforward

What durability and support features does KEMSO provide?

KEMSO emphasizes reliability: each pump body is serialized and covered by a lifetime warranty, reflecting the brand’s long-term confidence in its build quality. Technical support is USA-based, so troubleshooting and warranty help come from local technicians familiar with performance fuel systems.

• Serialized pump body for traceability and lifetime warranty coverage
• USA-based technical support staffed by experienced technicians
• Designed to handle gasoline and ethanol blends without performance loss

How should I plan fuel system upgrades around this pump?

When upgrading to a higher-flow pump, assess regulator, rail, filter, and fuel line capacity to ensure the whole system supports increased flow and pressure. Matching injector sizing, tuning, and return/returnless system requirements will preserve drivability and prevent lean conditions under load.

• Verify rail and regulator pressure ratings match the pump’s higher bypass setting
• Upgrade fuel lines and filters to reduce pressure drop at high flow
• Follow ECU or tuner guidance for injector scaling and fuel maps after installation

Who is this for? The KEMSO 340LPH High Performance Fuel Pump is aimed at enthusiasts and professional tuners building mid- to high-power street or race cars that need a reliable, higher-flow Walbro-style replacement. It’s a practical choice for builders running gasoline or E85 who want a serialized pump with strong support and a lifetime warranty. If you’re increasing boost, upgrading injectors, or replacing a worn factory pump with an eye on durability and consistent pressure, this pump is a suitable upgrade.