RK Autowerks B58 RK Billet Port Injection Race Manifold – GEN1
Precision-engineered for racers and serious B58 engine builders, the RK Autowerks Billet Port Injection Race Manifold offers performance and durability. CNC machined from billet aluminum, this manifold is designed to support high-horsepower builds that demand flawless fuel delivery and superior airflow under extreme conditions.
RK Autowerks is known for their no-compromise engineering, and this manifold is a direct result of meticulous design refinement, race-tested development, and a commitment to quality. Features include optimized internal geometry and increased structural integrity, ensuring consistent performance across the rev range.
Each manifold includes an integrated billet aluminum fuel rail, precision-machined to support aftermarket injectors and ensure balanced fuel distribution across all six cylinders. It’s built to pair seamlessly with your preferred port injection kit and tuning solution. Fuel injectors and port injection kit are not included.
Whether you're chasing horsepower records or building a reliable, track-capable B58 Gen 1, this manifold delivers the engineering excellence and performance that RK Autowerks is trusted for. Perfect for high-boost, methanol, or ethanol-fueled applications where OEM plastic manifolds simply won’t hold up.
BMW B58 Gen 1 Applications:
1 Series
2016-2019 F20/F21 M140i
2 Series
2016-2019 F22/F23 M240i
3 Series
2015-2019 F30/F31 340i / 340i xDrive
2016-2019 F34 340i GT / 340i GT xDrive
4 Series
2016-2020 F32/F33/F36 440i / 440i xDrive
5 Series
2016-2019 G30/G31 540i / 540i xDrive
6 Series
2017-2019 G32 640i GT / 640i GT xDrive
7 Series
2015-2019 G11/G12 740i / 740i xDrive
X3 Series
2017-2019 G01 X3 M40i
X4 Series
2018-2019 G02 X4 M40i
Designed to replace BMW Part #11 61 8 603 913, 11618603913 found in the 2016-2019 BMW F20, F21, F22, F23, F30, F31, F32, F33, F34, F36, G30, G31, G32, G11, G12, G01, G02, G38, M140i, M240i, and M340i, M340ix, 440i, 440ix, 540i, 540ix, 640i, 640ix, 740i, 740ix, 740Li, 740Lix, X3, X4. After placing your purchase, please contact Sales@5150AutoSport.com with your vehicle VIN to verify fitment.