Fuel System Parts

We stock a good range of the most commonly fitted fuel system parts for your MK2 Ford Focus ST from brands such as Airtec, Bosch and Deatschwerks.

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Bosch 550cc Multihole Injectors - Set of Five

Bosch

Fits:Focus MK2 STFocus MK2 RSSet of 5 genuine Bosch multi hole injectors, perfect for RS owners looking for 350bhp to 385bhp.These injectors are able to function at high fuel pressures and don't exhibit the high fuel pressure handling problems found with many other high flow high-impedance injectors.Many tuners push these injectors to 6 bar and higher. Engine performance and running quality are enhanced through the optimized spray pattern.Unlike single hole high flow injectors; these High Flow injectors utilize a multi-orifice tip for improved mixture preparation and atomization. This results in lower BSFC and better idle quality than many injectors with less flow.Features:547cc/min = 374g/min = 50lb/hr @ 3barDual cone sprayStandard body lengthRegular tip nozzle12 ohm resistanceUSCAR connectorE85 compatible

£225.00£187.50 (ex. VAT)
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Focus RS MK2 440cc multi hole injectors

Bosch

These are the same Bosch injectors as found in the Focus RS MK2 and are a direct replacement for the standard 330cc Focus ST injectors.Direct Fitment in Place of the original Ford Focus ST 225 InjectorsOriginal Ford / Volvo spray pattern characteristicsExcellent response characteristics from the multi-hole designHigh Impedance compatibility with all stock Ford/Volvo/Bosch ECUBetter fuel economy than the single-hole disc 'custom machined' types.

£360.00£300.00 (ex. VAT)
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Bosch 750cc Multihole Injectors - Set of Five

Bosch

Fits:Focus MK2 STFocus MK2 RSSet of 5 Bosch Multi hole injectors, perfect for RS owners looking for 400bhp - 500bhp+.These injectors are able to function at high fuel pressures and don't exhibit the high fuel pressure handling problems found with many other high flow high-impedance injectors.Many tuners push these injectors to 6 bar and higher.Engine performance and running quality are enhanced through the optimised spray pattern. Unlike single hole high flow injectors, these high flow injectors utilise a multi-orifice tip for improved mixture preparation and atomisation.This results in lower BSFC and better idle quality than many injectors with less flow.Features: GenuineReliable Bosch injectorsExcellent response characteristicsRobust DesignLow impedance performance characteristics with high impedance compatibility

£479.95£399.96 (ex. VAT)
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Bosch 1000cc Injectors - Set of Five

Bosch

Fits:Focus RS MK2RS Owners looking for 500BHP+Features:GenuineReliable Bosch InjectorsExcellent response characteristicsRobust Design  Low impedance performance characteristics with high impedance compatibility

£495.95£413.29 (ex. VAT)
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Bosch 650cc Multihole Injectors - Set of Five

Bosch

Fits:Focus MK2 ST & RSSet of 5.The newest injector from Bosch with their latest technology, multi spray angle but has 24 very small holes 12 on each side.Features:GenuineReliable Bosch injectorsExcellent response characteristicsRobust designLow Impedance performance characteristics with high impedance compatibilityRS owners looking for 385bhp +

£509.30£424.42 (ex. VAT)