RK Autowerks Billet Intake Manifold Air to Air
RK Autowerks S58 Coreless Manifold – Billet Port Injection
The RK S58 billet manifold is engineered in-house for high-boost and competition-level applications. Designed to support port injection and optimize airflow, this race-ready manifold offers strength, consistency, and flexibility for serious builds. Integrated fuel rail included.
Injectors and port injection line kit required (not included).
Key Features:
CNC-machined from 6061 billet aluminum
Integrated -8AN ORB fuel rail (included)
Supports Bosch EV14K (Shorty) injectors
6x 1/8″ NPT Secondary ports for Meth/Nitrous
4x Additional 1/8″ NPT secondary ports for Meth/Nitrous
OEM Oil filter access retained
Compatible with factory gasket and hardware
What’s included:
Billet manifold
-8AN ORB fuel rail
All necessary installation hardware
Designed to replace BMW Part #17 51 8 053 321, 17518053321
BMW S58 Applications:
2 Series
2023-Present G87 M2
3 Series
2021-Present G80 M3
4 Series
2021-Present G82/G83 M4
X3 Series
2019-Present F97 X3M
X4 Series
2019-Present F98 X4M