EU5 1200cc Uprated Bosch Fuel Injectors – BMW F80 M3 / F82 F83 M4 S55

The EU5 1200cc Bosch uprated fuel injectors are a high-capacity direct injection upgrade for the BMW S55 engine, designed to deliver the additional fuel volume required for high-horsepower and ethanol-based builds. Engineered using genuine Bosch injector technology, they retain OEM control strategies while providing the headroom needed for hybrid turbo and big turbo setups.

Fitment: BMW S55 Models
SKU: EU5-1200-S55

Key Features

1200cc High Flow Direct Injectors

– Significantly increased fuel delivery over stock
– Designed for high boost and high RPM operation
– Supports high horsepower builds

EU5 Injector Technology

– Latest Bosch solenoid injector design
– Precise fuel atomisation for efficient combustion
– Maintains factory ECU control and safety strategies

Ethanol & Motorsport Ready

– Suitable for high ethanol blends and full E85 setups
– Stable fuelling under extreme load
– Ideal for hybrid and big turbo applications

Benefits

– Massive fuelling headroom for high power S55 builds
– Maintains smooth drivability with proper calibration
– Essential upgrade for high boost and flex fuel tuning

Fitment

– BMW F80 M3
– BMW F82 M4
– BMW F83 M4

Installation Notes

– ECU calibration required
– Recommended to upgrade the high-pressure fuel pump in high power setups
– Professional installation advised

About Bosch

Bosch is the OEM manufacturer of BMW’s direct injection fuel systems, producing precision-engineered injectors designed for maximum performance, reliability and accurate fuel delivery.