B58 Gen2 Billet Intake Manifold

This in-house designed, machined, and welded billet intake manifold from RK Autowerks delivers a performance-focused solution for Gen 2 B58 engines operating well above factory power levels. Built in Fort Worth, Texas, it features a significantly upgraded intercooler core and full support for port injection, making it a strong foundation for high-boost, high-output builds. A matching fuel rail is included; injectors and a port injection line kit are required and sold separately.

Key Features

• 70% larger Wagner Tuning intercooler core for improved thermal efficiency
• Thermal phenolic spacer to reduce heat transfer and minimize heat soak
• Integrated -8AN ORB fuel rail (included)
• Compatible with EV14K-body (Bosch Shorty) injectors
• Six 1/8" NPT secondary ports for meth or nitrous systems
• Three 1/8" NPT auxiliary ports for accessories such as boost reference
• Coolant return line with OE-style fitting included
• Maintains full access to the OEM oil filter
• Offered in raw aluminum finish

Engineered to replace BMW Part #11 61 8 647 977, 11618647977 

BMW B58 Gen 2 Applications:

3 Series

2019-Present     G20/G21     M340i / M340i xDrive

4 Series

2020-Present     G22/G23/G26     M440i / M440i xDrive

Z Series

2019-Present     G29     Z4 M40i

5 Series

2020-Present     G30/G31 LCI     540i / 540i xDrive

6 Series

2020-Present     G32 LCI     640i GT / GT 640i xDrive 

7 Series

2019-Present     G11/G12 LCI     740i / 740i xDrive

X3 Series

2020-Present     G01     X3 M40i

X4 Series

2020-Present     G02     X4 M40i

X5 Series

2018-Present     G05     X5 xDrive40i

X6 Series

2019-Present     G06     X6 xDrive40i

X7 Series

2018-Present     G07     X7 xDrive40i

Toyota B58 Gen 2 Applications:

A90 / A91 Supra

2020-Present     GR Supra 3.0 Premium    
2021-Present     GR Supra 3.0 A91 Edition     

After placing your purchase, please contact Sales@5150AutoSport.com with your vehicle VIN to verify fitment.