BMW M2 (G87) S58 Billet Port Injection Intake Manifold with Integrated Intercooler and Fuel Rail - RK Autowerks PFI/MPI, Gen 1/Gen 2 Fitment

RK Autowerks G87 M2 S58 Billet Plenum with Integrated Charge Cooler and Auxiliary Fuel Rail

Serious S58 builds need reliable fuelling and cooler intake temps. This RK Autowerks CNC-billet aluminium plenum for the G87 M2 delivers exactly that, combining an oversized integrated charge cooler core, provisions for multi-port injection, and a supplied fuel rail to support higher power targets, ethanol blends and hybrid or big turbo upgrades. Ideal for fast-road and track cars looking to unlock stable AFRs on E85 and flex-fuel while keeping intake air temperatures under control.

Why enthusiasts choose this S58 plenum

• Designed, machined and welded in-house by RK Autowerks for a motorsport-grade finish
• Approximately 40 percent larger charge cooler core than OE for extra cooling headroom and reduced heat soak
• Auxiliary fuelling ready - accepts port fuel setup for PFI or MPI configurations
• Dedicated fuel rail is included for a clean, tidy installation
• Gen 1 and Gen 2 G87 M2 compatibility - select the correct generation for your car
• Six secondary 1/8 NPT provisions for nitrous or methanol nozzles
• Three additional 1/8 NPT take-offs for vacuum references or sensors
• Factory oil filter access is retained for easy servicing

This upgraded inlet manifold is built for tuners who want consistent fuelling under load, seamless expansion for future power goals and clean packaging in the S58 bay. Perfect when pairing with flex-fuel systems, ethanol-based maps, uprated turbos and aggressive ignition timing where dependable charge cooling and extra injector capacity matter.

Injector guidance

Bosch EV14k short body injectors are recommended for the auxiliary rail.

Finishes

• Standard options: Unfinished aluminium or gloss black
• Custom colours: £450 - approximate lead time 3 weeks

Note: Unfinished aluminium is intended for polishing or powder coating by the customer and may show minor blemishes that will disappear after finishing.

What’s included

• Billet aluminium S58 plenum with integrated charge cooler
• Auxiliary fuel rail for port injection
• Pre-threaded 1/8 NPT ports for nozzles, vacuum and sensors
• Gen-specific fitment - choose Gen 1 or Gen 2

Real-world confidence

We have installed and used this hardware on S58 builds and our customers have been extremely happy with the stability, ease of configuration and future-proof fuelling it provides. It is a proven choice for G87 M2 owners chasing dependable performance without compromise.

Professional fitting and support

Professional installation is recommended. For fitting at MJ Modifications in Warwickshire or to request a quote, email info@mjmodifications.co.uk.

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