3/8 MPT Hex Pipe Plug

The 3/8 MPT Hex Pipe Plug from FRAGOLA is a precision-engineered closure fitting designed for hydraulic systems, fuel lines, and custom automotive plumbing applications. This compact adapter effectively seals open ports on manifolds, blocks, and distribution components where a permanent connection isn't required. It is ideal for engine builders and fabricators looking for reliable port sealing solutions.

Constructed to withstand vibration and thermal cycling, this hex plug is designed for high-performance applications. The integrated hex head allows for positive wrench engagement, preventing rounding and enabling controlled torque application. This is particularly important when working with precision porting on aluminum blocks or integrated fuel rails.

Professional mechanics, engine builders, and DIY enthusiasts will find this fitting essential for fuel system upgrades and manifold modifications. The 3/8 MPT configuration ensures compatibility with standard 3/8-inch NPT ports, making it a versatile choice for various automotive applications.