Adapter Kit; MAFS 3in Aluminum

The Adapter Kit; MAFS 3in Aluminum from SPECTRE is purpose-built for engine builders and performance enthusiasts who need a precision intake manifold adapter for mass airflow sensor integration. This aluminum adapter serves as the critical bridge between your factory or upgraded intake manifold and a 3-inch mass airflow sensor housing, enabling seamless fuel management and accurate air density readings for tuned engines. Whether you're upgrading to a larger diameter intake tract or retrofitting a modern MAFS onto a classic platform, this adapter ensures proper sensor positioning and flow characteristics.

Machined from lightweight aluminum, the SPECTRE MAFS adapter minimizes additional intake weight while maintaining structural rigidity under boost and naturally aspirated conditions alike. The 3-inch bore diameter is optimized for mid-range displacement engines (typically 302–383 cubic inches) and accommodates standard aftermarket mass airflow sensor elements without restriction. Aluminum construction offers superior thermal conductivity compared to plastic alternatives, reducing heat soak in the sensor cavity and improving signal accuracy during sustained high-RPM operation. The compact footprint—5 inches long with a 3.5-inch width profile—integrates cleanly into most custom intake manifold designs without requiring extensive modification to surrounding components.

This adapter is ideal for engine swaps, carbureted-to-EFI conversions, and performance fuel injection upgrades where stock intake geometry won't accommodate modern sensor technology. Installation typically requires basic gasket sealing and fastener torque to specification; consult your engine management tuner to confirm sensor type compatibility and airflow calibration for your specific displacement and induction setup. At 0.85 pounds, the aluminum construction adds negligible weight to your intake system while delivering the precision fitment that properly tuned fuel delivery demands.