RK Autowerks B58 Billet Port Injection Intake Manifold with Fuel Rail for BMW F30 F31 F32 F33 F36 340i 440i, G20 G21 M340i, G29 Z4 M40i and Toyota A90 GR Supra - 40% Larger Integrated Charge Cooler Core

RK Autowerks B58 Billet Port Fuel Inlet Manifold with Integrated Cooler and Rail

Serious B58 tuning needs colder charge temps and rock solid fuelling. This RK Autowerks billet aluminium inlet manifold delivers both, pairing a 40 percent larger integrated water to air cooler core with true port fuel capability and an included rail. It is the go to hardware for ethanol blends such as E85, hybrid or big frame turbo setups, track use and consistent road performance without heat soak.

CNC machined, hand welded and built in Texas, this premium plenum has been a winner on our own cars and customer builds. Throttle response, intake temperature control and fuelling headroom have been superb, keeping B58 power delivery repeatable and reliable.

Highlights

• Billet aluminium plenum with integrated cooler core that is 40 percent larger than the factory unit for excellent IAT stability
• Proper port fuel provisions with rail included for high demand fuelling on ethanol and high boost applications
• Six secondary 1/8 NPT bungs for methanol or nitrous, plus three auxiliary 1/8 NPT ports for sensors or vacuum sources
• Retains OE oil filter housing access for easy servicing
• Available for B58 Gen 1 and B58 Gen 2 applications
• Designed, CNC machined and TIG welded in Texas by RK Autowerks

Recommended injectors

Works with Bosch EV14K Body Shorty injectors for the port fuel rail.

Finishes and options

• Standard finishes: Raw aluminium or Gloss Black
• Raw aluminium is intended for polishing or powder coating by the customer. Minor blemishes may be present and will be hidden once coated
• Custom colours available for an additional cost, approx 2 week lead time. Contact us for details

Vehicle fitment

B58 powered BMW and Toyota models as listed below. Gen 1 and Gen 2 variants available to suit your engine.

BMW 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

BMW 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

BMW Z4

• G29 Z4 M40i 2018 to 2020

Toyota

• A90 GR Supra 6 cylinder 2018 to 2020

What you get

• RK Autowerks billet B58 inlet manifold with integrated larger water to air cooler core
• Port fuel rail

Why enthusiasts choose it

Proven cooling performance under repeated pulls, stable fuelling on ethanol blends and hybrid turbo cars, precise machining quality and a straightforward fit that keeps servicing simple. Our customers have been extremely happy with the durability and repeatability this manifold brings to tuned B58 builds.

Installation

Professional fitting is recommended. MJ Modifications offers installation, setup and support from our Warwickshire workshop. Request a quote at info@mjmodifications.co.uk.

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Photos

Manufacturer

RK Autowerks