Carburetor Adapter 4150 to 4500

The DART Carburetor Adapter 4150 to 4500 is a precision-engineered aluminum spacer designed to convert Dominator-style (4500) carburetors to fit square-bore intake manifolds (4150 mounting pattern). This 2-inch open adapter enables engine builders and performance enthusiasts to maximize carburetor compatibility across different fuel system configurations, eliminating the need for costly manifold replacement when upgrading or swapping carburetors.

Constructed from aluminum in natural finish, this adapter weighs just 2.65 lbs while providing a rigid, thermally stable platform for carburetor mounting. The 2-inch thickness maintains proper carburetor height and air cleaner clearance while preserving fuel line routing and linkage geometry. The open design eliminates unnecessary bulk and allows direct air intake flow, critical for carburetor tuning and emission control systems common in street and performance applications. Precise bore alignment ensures gasket sealing integrity and prevents fuel leakage at the intake interface.

This adapter is essential for builders running Dominator four-barrel carburetors on engines with square-bore manifolds—a common scenario in street rods, classic muscle car restorations, and performance rebuild projects. Whether retrofitting vintage carburetors into modern intake systems or maintaining original carburetor preference on updated manifolds, this DART adapter provides a proven solution that simplifies installation while maintaining fuel delivery reliability and manifold compatibility standards.

Part number 62100007 is the industry-standard carburetor adapter for this conversion, recognized across engine machine shops and performance garages as a dependable, precision-fit component for Dominator-to-square-bore applications.