BX4i 4150 Style Throttle Bodies
BLP BX4i 4150 Throttle Body – Precision Airflow with 44mm Performance
The BLP BX4i throttle body is a high-flow, billet 4150-style solution engineered for EFI conversions and high-performance naturally aspirated applications. Featuring four 44mm (1.750″) stainless steel throttle plates, the BX4i flows an impressive 1220 CFM, delivering the airflow needed for demanding street or race builds.
Machined in-house from high-quality billet aluminum, the BX4i is designed to mount directly to most 4150 intake manifolds, providing an easy and reliable upgrade path for carbureted or aftermarket EFI setups.
Key Features:
- 44mm (1.750″) throttle bores, flowing up to 1220 CFM
- Precision-machined billet construction for strength and reliability
- Compatible with standard GM TPS sensors (sensor not included)
- Available with or without GM IAC sensor boss to fit your specific needs
- Standard 4150 flange pattern – ideal for carb-to-EFI conversions
- Stainless steel throttle plates for durability and smooth operation
Whether you’re building a high-performance EFI system or replacing a traditional carburetor with a modern throttle body, the BX4i delivers the airflow and quality expected from BLP Racing Products.
BLP BX4i – Built for Flow. Designed for Performance.