TunePoint Europe » B58 Injectors » S58 Injectors for B58 Gen 2 – 30% Upgrade for BMW G-Series 40i Models and Toyota Supra
TunePoint Europe

S58 Injectors for B58 Gen 2 – 30% Upgrade for BMW G-Series 40i Models and Toyota Supra

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For BMW B58 Gen2 owners targeting higher horsepower levels, injector capacity eventually becomes an important factor in the overall fuel system. Genuine OEM S58 injectors provide a reliable and effective upgrade by increasing fuel delivery while maintaining factory-style installation and OEM-level durability.

Originally developed for BMW's high-performance S58 engine, these Bosch direct injection units provide significantly greater flow capacity than standard B58 injectors. This makes them an excellent choice for high-output street builds, track applications, and vehicles running more demanding engine calibrations.

Increased Fuel Capacity

Compared with the original B58 Gen2 injectors, the S58 units provide approximately 30% greater fuel flow. This additional capacity allows for more aggressive tuning strategies, increased boost levels, and higher ethanol fuel blends while maintaining consistent fuel delivery.

When combined with our Gen2 HPFP Kit, the factory-based fuel system can support power levels exceeding 700 HP on E50 fuel without requiring additional fuel hardware upgrades.

The use of genuine for Bosch fuel injectors ensures accurate fuel metering, proven reliability, and compatibility with modern BMW direct injection systems.

Product Features

  • Genuine OEM Bosch S58 fuel injectors
  • Approximately 30% increased fuel flow compared with factory B58 injectors
  • Optimized spray pattern for B58 Gen2 applications
  • Supports over 700 HP with E50 fuel when combined with the Gen2 HPFP Kit
  • Direct plug-and-play installation
  • No mechanical modifications required
  • Injector calibration can be activated through MHD by selecting the correct injector option

Package Includes

  • 6 OEM S58 fuel injectors
  • 6 OEM sealing rings

Vehicle Compatibility

Compatible exclusively with vehicles equipped with the B58 Gen2 engine:

  • Toyota A90/A91 Supra
  • BMW Z4 M40i (G29)
  • BMW M240i / M240xi (G42/G43)
  • BMW M340i / M340xi (G20/G21)
  • BMW M440i / M440xi (G22/G23/G26)
  • BMW 540i / 540xi (G30/G31)
  • BMW 640i / 640xi (G32)
  • BMW 740i / 740xi (G11/G12)
  • BMW 840i / 840xi (G15/G16)
  • BMW X5 40i (G05)
  • BMW X6 40i (G06)
  • BMW X7 40i (G07)
  • BMW X3 M40i (G01)
  • BMW X4 M40i (G02)

For customers comparing options and looking for a reliable fuel injector for a Bosch solution, OEM S58 injectors provide an excellent balance between increased performance capability and factory-level integration.

Why Choose S58 Injectors?

For enthusiasts looking to increase the fueling potential of their B58 Gen2 platform, S58 injectors represent one of the most effective OEM-based upgrades available.

Their increased flow capacity, Bosch manufacturing quality, and direct installation make them an ideal solution for high-performance builds using larger turbochargers, ethanol fuel blends, or upgraded high-pressure fuel pumps.

When selecting replacement injector components, factors such as application compatibility and Bosch fuel injector price should be considered to ensure the correct balance between performance and reliability.

For BMW owners searching for genuine OEM solutions, Bosch fuel injectors UK availability provides access to proven injector technology suitable for demanding B58 Gen2 performance applications while maintaining OEM reliability.

FAQ

Are these S58 injectors a direct physical fit for B58 Gen 2 engines?
Yes. These injectors are designed to fit compatible B58 Gen 2 fuel systems, allowing installation using the factory injector mounting locations when matched with the correct vehicle application.
Why upgrade injectors instead of increasing fuel pressure on a B58 Gen 2 engine?
Increasing fuel pressure alone may not provide enough additional fuel volume for higher-output builds. Larger injectors increase the amount of fuel delivered during each injection event while allowing the system to operate within proper pressure ranges.
Will these injectors change cold starts or idle quality?
When properly calibrated, upgraded injectors can maintain normal idle quality and drivability. Correct injector data in the ECU is essential for accurate fuel control during all operating conditions.
Can these injectors be used on B58 Gen 2 engines with upgraded turbo inlet and airflow modifications?
Yes. Increased airflow modifications often lead to higher fueling requirements, and upgraded injectors can help match the additional air volume with the required amount of fuel.
Do these injectors work with factory BMW engine management systems?
Yes, but the ECU calibration must be updated with the correct injector parameters. The engine management system relies on accurate injector data to control fuel delivery correctly.
What makes S58 injectors a popular upgrade for B58 Gen 2 engines?
S58 injectors offer a factory-based higher-flow solution that increases fueling headroom while maintaining BMW OEM engineering standards. They are commonly used when the original B58 Gen 2 injector capacity becomes a limitation during performance upgrades.