Product Overview
Walbro 255 LPH performance fuel pump for Honda S2000 and H22 applications
The Walbro ITP216 255 LPH fuel pump kit provides a proven in-tank fuel supply upgrade for selected Honda performance applications including the S2000 F20C, Accord H22 and Prelude H22.
At the centre of the kit is the Walbro/TI Automotive GSS342, one of the best-known pumps in the GSS high-performance range. TI Automotive describes the 255 LPH GSS family as high-pressure pumps using robust gerotor technology and suitable for performance applications where the standard fuel pump can no longer provide sufficient flow.
255 LPH high-pressure fuel delivery
Fuel pump capacity becomes increasingly important as engine output and fuel demand increase. Forced induction, larger injectors and other power upgrades can push an ageing factory pump beyond its intended operating range.
The GSS342 is commonly referred to as a 255 LPH pump. Importantly, fuel-pump flow changes as system pressure changes. Independent testing published for this particular ITP216/GSS342 application records approximately 255 LPH at 3 bar and 225 LPH at 5 bar; the retailer explicitly notes these are its test figures rather than factory measurements.
TI Automotive itself states that its 255 LPH GSS pumps can support approximately 500 horsepower. That should be treated as an application guide rather than a guaranteed vehicle power rating because actual capacity depends on fuel type, base pressure, boost pressure where applicable, voltage, injector requirements and the rest of the fuel system.
Genuine GSS342 pump technology
The GSS342 belongs to TI Automotive’s high-pressure GSS pump family. Manufacturer documentation identifies the GSS342 configuration as having an 11 mm inlet positioned in line with the outlet, distinguishing it from related GSS340 and GSS341 designs.
The pump is designed for installation inside the fuel tank and operates from the vehicle’s 12-volt electrical system.
That makes it suitable for customers wanting an uprated fuel-delivery solution without moving to a completely bespoke external fuel system.
Suitable for standard and modified Hondas
A Walbro 255 is not solely a turbo or competition upgrade. It can also replace a deteriorating original in-tank pump on older cars.
That is particularly relevant to cars such as the S2000, Prelude and Accord Type R, where original fuel-system components may now be decades old.
For modified cars, additional pump capacity can provide useful headroom when the engine is fitted with upgrades such as:
- forced induction
- higher-flow injectors
- increased fuel pressure
- ECU calibration
- higher engine output
- supporting intake and exhaust modifications
A fuel pump alone does not increase engine power. Its purpose is to supply the fuel flow required by the engine and fuel system.
Honda S2000 F20C fitment
ITP216 is repeatedly catalogued for the Honda S2000.
For UK customers, one detail is particularly important: UK and European S2000 models retained the 2.0-litre F20C throughout the production run, even after the 2004 facelift. The 2.2-litre F22C1 commonly associated with later AP2 S2000s was principally a North American-market engine and should not be automatically applied to UK fitment data.
This distinction is worth including because many generic S2000 fitment databases are based on American applications.
Honda Accord Type R H22A7
The kit is also marketed for H22-powered Accords. For the UK market, the key application is the 1998–2002 Honda Accord Type R CH1, powered by the 2.2-litre H22A7 DOHC VTEC engine.
Customers with other Accord variants or engine conversions should confirm compatibility from the vehicle and existing fuel-pump arrangement before ordering.
Honda Prelude H22 applications
ITP216 is also consistently marketed for Honda Prelude H22 applications by UK retailers.
European fifth-generation Prelude H22 applications include the H22A5 and H22A8 engines across BB6/BB8 variants.
However, because the available ITP216 documentation does not give a complete UK trim-by-trim fitment breakdown, we recommend confirming the existing pump arrangement before publishing blanket compatibility for every Prelude derivative.
Installation
The kit is intended as an in-tank installation and typically includes installation parts such as the strainer/filter, hose, wiring and clamps.
Some installations may require electrical connection work. Another UK supplier specifically advises that soldering or wiring skills can be required when fitting these pump kits.
Because installation involves petrol, electrical connections and an open fuel tank, professional installation is strongly recommended where the installer is not experienced with automotive fuel systems. TI Automotive likewise recommends professional installation.
Key features
- Genuine-specification Walbro/TI Automotive GSS342 pump
- Vehicle kit reference ITP216
- High-performance 255 LPH pump class
- In-tank installation
- 12 V operation
- Designed for increased fuel-flow requirements
- Suitable as a performance upgrade or replacement for an ageing OE pump
- Applicable to Honda S2000 F20C and selected H22-powered Honda models
- TI Automotive states the 255 LPH GSS range can support approximately 500 hp depending on application
- Installation components supplied with the ITP216 vehicle kit
- Appropriate for fast-road, track and modified applications when correctly specified
- Professional installation recommended
Technical specifications
| Specification | Detail |
|---|---|
| Brand | Walbro / TI Automotive |
| Kit part number | ITP216 |
| Pump model | GSS342 |
| Pump type | Electric in-tank fuel pump |
| Nominal flow class | 255 LPH |
| Voltage | 12 V DC |
| Pump technology | Gerotor |
| GSS342 inlet configuration | 11 mm, inline with outlet |
| Application | Performance / motorsport upgrade |
| Manufacturer installation guidance | Professional installation recommended |
The official TI Automotive documentation confirms the GSS342 configuration and 255 LPH GSS family specifications.
Independently published dimensions/test data
One specialist supplier reports:
- Length: 120 mm
- Diameter: 39.2 mm
- Weight: 0.366 kg
- Flow at 3 bar: 255 LPH
- Flow at 5 bar: 225 LPH
FAQs
Is the Walbro ITP216 suitable for the Honda S2000?
Yes. ITP216 is specifically catalogued by multiple specialist suppliers for the Honda S2000 and uses the GSS342 performance in-tank pump.
Does it fit both pre-facelift and facelift UK S2000 models?
The kit is marketed for the S2000 generally, and UK/European S2000s continued to use the F20C 2.0 throughout production. UK facelift cars should not be confused with US F22C1-powered S2000s.
What pump is supplied in ITP216?
The kit is based around the Walbro/TI Automotive GSS342 high-pressure in-tank fuel pump.
Is it genuinely a 255 LPH pump?
Yes, GSS342 belongs to TI Automotive’s 255 LPH GSS pump range. Actual fuel flow varies according to fuel pressure and electrical supply, so 255 LPH should not be treated as the pump’s flow at every operating condition.
Will a Walbro 255 make my car produce more power?
No. A fuel pump does not create engine power by itself. Its role is to provide sufficient fuel flow for the engine’s requirements. It is typically upgraded when tuning, forced induction or injector changes increase fuel demand.
Can the pump support 500 bhp?
TI Automotive states its 255 LPH GSS pumps can support 500 horsepower, but this is an application guideline rather than a guaranteed output for every vehicle. Fuel type, fuel pressure, voltage, injector capacity and engine setup all affect the required flow.
Does ITP216 fit the Honda Accord Type R?
The ITP216 is marketed for H22-powered Accord applications. The UK Accord Type R CH1 uses the H22A7 2.2 VTEC engine. Because Honda produced other Accord configurations, customers should match their model and current pump arrangement before ordering.
Does it fit every H22 Honda Prelude?
ITP216 is marketed for H22-powered Preludes, but the available sources do not establish every UK BB6/BB8 derivative individually. Compatibility requires confirmation before publication/order for individual Prelude variants.
