Description

RK Autowerks B58 Race Manifold Gen 2 – Billet Port Injection

This billet race manifold is designed in-house for high-performance Gen 2 B58 applications. It includes an integrated -8AN ORB fuel rail and supports full port injection. Injectors and a port injection line kit are required and not included.

Key Features:

• CNC-machined from 6061 billet aluminum

• Integrated -8AN ORB fuel rail (included)

• Supports Bosch EV14K (Shorty) injectors

• 6 x 1/8″ NPT secondary ports for meth/nitrous

• 3 x 1/8″ NPT auxiliary ports for boost reference or sensors

• OEM oil filter remains accessible

• Available in raw aluminum

Designed for BMW B58 Gen 2 Engines, Including:

• M340i / M440i – G20 / G22 (2019+)

• M240i – G42 (2021+)

• Toyota Supra – A90/A91 (2020+)

• Z4 M40i – G29 (2018+)

• X3 M40i / X4 M40i – G01 / G02 (2019+)

• 540i – G30 / G31 (2020+)

• 740i – G12 (2020+)

• 840i – G14 / G15 / G16 (2020+)

• X5 / X6 / X7 40i – G05 / G06 / G07 (2018+)

Installation & Support

• Direct bolt-on fitment using factory mounting points

• Compatible with OEM gaskets and hardware

• Full access to the oil filter retained

• Please note that if you are not using port injection, you will need to purchase blanks. Precision Raceworks sells the blanks very cheap.

Why Choose RK

Each RK manifold is built start to finish in our Fort Worth, TX facility — from CNC machining to final assembly. Trusted in competitive and high-boost builds, this manifold delivers performance, precision, and long-term reliability. No shortcuts. No compromises.

Click Here For Warranty Info