The RPC Phenolic 4150 Carburettor 1 inch Spacer Kit is designed to help reduce heat transfer from the intake manifold to the carburettor, promoting a cooler, denser air fuel mixture for improved engine efficiency and performance. Made from phenolic resin, this spacer is a practical upgrade for street and performance applications where reducing heat soak is important.

Built to suit Holley 4150 and 4160 4 barrel carburettor flanges, this open hole spacer is supplied with gaskets and mounting hardware for straightforward installation. The 1 inch thickness offers added separation between the carburettor and manifold, while the black phenolic construction delivers a durable and functional finish.

Please note this spacer is not recommended for use with heat crossover OEM manifolds. Sold individually, it is a simple and effective way to support intake charge quality and help maximise engine response in the right application.

Features & Benefits

• 1 inch phenolic spacer helps reduce heat transfer to the carburettor
• Open hole design supports improved airflow for performance use
• Fits Holley 4150 and 4160 4 barrel carburettor flanges
• Supplied with mounting hardware and gaskets for easier installation
• Phenolic resin construction offers durability and heat resistance
• Not recommended for use with heat crossover OEM manifolds