RK Autowerks B58 Race PLUS Manifold Gen 2 – Billet Port Injection

Description

RK Autowerks B58 Race PLUS 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.

This unit is 3x bigger than the oem core!

Key Features:

• CNC-machined from 6061 billet aluminum

• -16AN inlet and outlet water connections

• Phenolic spacer to reduce heat soak

• Integrated -8AN ORB fuel rail (included)

• Supports Bosch EV14K (Shorty) injectors

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

• OEM oil filter remains accessible

• Available in raw aluminum

• LINES AND FITTINGS ARE NOT INCLUDED BECAUSE THIS IS A UNIVERSAL PART. YOU WILL NEED TO ESTABLISH YOUR OWN WAY OF CONNECTION THE WATER FITTINGS BECAUSE THE SIZE OF THE LINES CANNOT USE OEM CONNECTIONS

What’s Included:

• Billet intake manifold

• Oil filter housing spacer

• 8AN Fuel rail

• All necessary hardware and fittings

• Fuel lines and fuel injectors are NOT included

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.