2" Open Phenolic Carburetor Spacer for Holley 4150 4160 4 Barrel Carb - Compatible with SBC BBC Small Block Big Block Chevy Engine

Upgrade your engine’s performance with this 2" Open Phenolic Carburetor Spacer, designed to reduce heat transfer and improve airflow between the carburetor and intake manifold. Constructed from high-quality phenolic resin, this spacer helps insulate the carburetor from engine heat, maintaining cooler fuel temperatures for enhanced combustion efficiency. The open plenum design optimizes airflow, which can improve throttle response and horsepower in high-RPM applications. Ideal for street performance, drag racing, or off-road builds, this spacer is compatible with most 4-barrel carburetors and fits standard square bore patterns. Whether you're dialing in your muscle car or fine-tuning your track build, this 2-inch phenolic spacer is a reliable upgrade for serious performance gains. 🔥 Heat Insulation Performance – Phenolic material minimizes heat transfer to keep fuel mixture cooler and more stable. 💨 Improved Airflow – 2" open plenum design increases air volume to the intake, enhancing top-end power and throttle response. ⚙️ Universal Fitment – Compatible with most 4-barrel square bore carburetors including Holley, Edelbrock, and more. 🔩 Easy Installation – Includes mounting hardware and gaskets for quick, hassle-free setup. 🏁 Ideal for Performance Builds – Perfect for street, strip, or custom applications where every bit of power matters.