Cast Aluminium 4 Barrel 1000cfm Throttle Body Natural Finish. Suit 4150

Aeroflow Performance Cast Aluminium 4-Barrel Throttle Body — 1000 CFM, 4150 Pattern, Natural Finish

Upgrade your intake with a durable, affordable cast aluminium 4-barrel throttle body designed for 4150-flange engines. This 1000 CFM unit blends performance with value, offering robust throttle response and consistent airflow without the premium cost of billet alternatives.

Key features

• 44.45 mm (1-3/4") bore with a carefully radiused entry to promote maximum airflow and minimize turbulence.
• 6.3 mm (1/4") center thread for a secure air filter stud.
• Accommodates a standard air cleaner with a 5-1/8" flange.
• Includes GM-style idle air control (IAC) motor, GM-style throttle position sensor (TPS), and GM LS3-style MAP sensor for modern drive-by-wire and aftertreatment compatibility.
• Multiple vacuum ports: 2× 3/8", 2× 1/4", and 2× 3/16" for PCV, brake booster, and other vacuum-powered components.
• Designed for 4150-pattern manifolds and attaches to square-bore carburettor flange setups with standard bolt spacing for reliable fitment.
• Ideal for fuel-injection systems needing precise throttle control and efficient airflow.
• Cast aluminium construction provides durability and a clean, understated look while staying more economical than billet equivalents.

Why choose this over billet?

Cast aluminium delivers strong durability and a natural finish that suits a range of builds without drawing attention away from other performance parts. It’s a practical upgrade path for enthusiasts seeking 1000 CFM capacity and OEM-style sensor compatibility at a more accessible price point.

Use cases

• Retrofit or upgrade for 4150-pattern manifolds on street, strip, or daily driver applications.
• Hybrid setups requiring 4-barrel throttle response combined with modern sensors for emissions- and drive-by-wire-ready systems.
• Builds where reliable, repeatable throttle response and robust airflow are priorities, not showy billet aesthetics.