RK Autowerks BMW Toyota B58 Billet Port Injection Manifold - F30 F31 F32 F33 F36 340i 440i, G20 G21 M340i, G29 Z4 M40i, A90 GR Supra
Unlock reliable power, cooler intake temps and rock solid fuelling on your BMW B58 or Toyota Supra A90 with the RK Autowerks billet aluminium port injection intake manifold. This upgraded B58 intake manifold integrates a 40 percent larger charge cooler core than stock and adds properly engineered port fuel injection with an included fuel rail. Ideal for high power builds, ethanol E85 setups, hybrid or big turbo upgrades and anyone chasing consistent performance without heat soak.
Designed, CNC machined and welded in house by RK Autowerks in Texas, this B58 manifold is built for serious enthusiasts. We have used this manifold on our own B58 builds and customer cars, and feedback has been excellent on throttle response, intake air temperature control and fuelling headroom. If you are searching for a proven B58 port injection manifold for 340i, 440i, M340i, Z4 M40i or A90 GR Supra, this is the premium solution.
Why choose this B58 intake manifold
- Billet aluminium B58 intake manifold with integrated larger charge cooler core for improved cooling and reduced heat soak
- Ports for port fuel injection with fuel rail included for stable high power fuelling on ethanol E85 and big turbo builds
- Precision designed, machined and welded in house for quality and durability
- Gen 1 or Gen 2 options available to suit your specific B58 application
- Maintains OEM oil filter accessibility for easy servicing
- Made in Texas by RK Autowerks
Key features
- Billet manifold port injection design
- 40 percent larger intercooler core vs stock
- Ports for port fuel injection
- Fuel rail included
- Recommended injectors: EV14K Body Bosch Shorty
- Six secondary 1/8 NPT ports for nitrous or methanol injection
- Three auxiliary 1/8 NPT ports for vacuum or additional sensors
- OEM oil filter accessible
- 100 percent made in Texas
Finishes and options
- Standard colours: Unfinished aluminium or Gloss Black
- Unfinished aluminium is intended to be powder coated or polished by the customer. Minor blemishes may be present and will not show once coated
- Custom colours available for $200. Approximate lead time 2 weeks. Contact us for details
Compatibility - BMW B58 engine
Gen 1 and Gen 2 fitments as listed. Perfect search terms include B58 intake manifold, B58 port injection manifold, B58 PI manifold, RK Autowerks B58 manifold, Supra port injection manifold, M340i intake manifold, 340i intake manifold, 440i intake manifold, Z4 M40i intake manifold.
3 Series
- F30 LCI 340i and 340ix 10/2014 to 10/2018
- F31 LCI 340i and 340ix 10/2014 to 06/2019
- F34 GT LCI 340i and 340ix 09/2015 to 12/2019
- G20 M340i and M340ix 01/2018 to 12/2019
- G21 M340ix 05/2018 to 12/2019
4 Series
- F32 440i and 440ix 04/2015 to 02/2017
- F32 LCI 440i and 440ix 05/2016 to 12/2019
- F33 440i and 440ix 03/2015 to 02/2017
- F33 LCI 440i and 440ix 05/2016 to 12/2019
- F36 Gran Coupe 440i and 440ix 03/2015 to 02/2017
- F36 Gran Coupe LCI 440i and 440ix 05/2016 to 12/2019
- G22 M440ix 07/2020 onward
Z Series
- G29 Z4 M40i 2018 to 2020
Toyota
- A90 GR Supra 6 cylinder 2018 to 2020
What is included
- RK Autowerks billet B58 intake manifold with integrated larger intercooler core
- Port fuel injection rail
Recommended injectors
EV14K Body Bosch Shorty injectors are recommended for the port injection rail.
Installation and support
Professional fitting is recommended. Nforcd offers full installation, setup and support from our Warwickshire workshop. Request a fitting quote at Sales@nforcd.com.
Trusted by enthusiasts
Nforcd customers running this RK Autowerks B58 manifold have been extremely happy with the build quality, fuelling stability for E85 and hybrid turbo setups, and the consistency delivered by the larger integrated charge cooler core.
Popular search terms
BMW B58 intake manifold, B58 port injection manifold, B58 port fuel injection, B58 PI kit, RK Autowerks B58 manifold, B58 intercooler manifold, B58 charge cooler, 340i intake manifold, M340i intake manifold, 440i intake manifold, Z4 M40i intake manifold, A90 Supra intake manifold, Supra port injection, Bosch EV14K injectors, EV14 shorty injectors, 1/8 NPT meth ports, nitrous ports, B58 manifold upgrade.
Photos
Manufacturer
RK Autowerks