Expander AN -3 Female to -4 Male

The Expander AN -3 Female to -4 Male adapter from ALLSTAR PERFORMANCE is an essential fitting for custom fuel systems, coolant loops, and hydraulic line configurations in engine builds and performance vehicle modifications. This adapter allows mechanics and enthusiasts to connect smaller -3 female ports to larger -4 male line connections, ensuring system integrity during transitions.

Constructed to meet industry-standard AN port specifications, the Expander AN -3 Female to -4 Male adapter features precision-engineered internal passages and external port geometries that maintain flow capacity. The -3 female inlet accepts standard -3 hose ends, while the -4 male outlet threads into -4 compatible fittings, providing a smooth flow path with minimal turbulence.

Performance builders, engine swap specialists, and custom fabricators rely on this adapter for downsizing line sections or consolidating multiple connections. Its durable construction ensures reliability in various applications, making it a valuable component for anyone working on performance vehicle modifications.