3/8 X 1/8 Nipple Bush

The 3/8 X 1/8 Nipple Bush by EARLS is a precision adapter fitting designed for hydraulic, pneumatic, and fuel system applications where port size reduction is essential. This bushing functions as a critical transition component in fluid power systems, allowing technicians and engineers to connect larger 3/8 NPT male ports to smaller 1/8 NPT female connections. Whether you're building a custom hydraulic line, modifying an engine fuel system, or assembling pneumatic controls, this nipple bush provides a reliable, leak-resistant interface that maintains system integrity under pressure.

Manufactured from aluminum and finished with durable blue anodizing, the 3/8 X 1/8 Nipple Bush offers superior corrosion resistance and a professional appearance on exposed installations. The anodized coating protects against oxidation and fluid degradation, extending service life in harsh environments including engine bays, hydraulic manifolds, and industrial control systems. EARLS fittings are engineered to NPT (National Pipe Thread) specifications, ensuring precise 1/8 inch female to 3/8 inch male thread compatibility and reliable sealed connections without additional sealant in most applications. The compact design—weighing just 0.02 lbs and measuring 1.2 x 0.95 x 3.1 inches—permits installation in space-constrained applications while maintaining full flow capacity.

This adapter is ideal for motorsports enthusiasts, hydraulic system integrators, and maintenance professionals who require OEM-quality fittings for custom applications. It excels in situations where system pressure demands reliability but space or port configuration limits standard solutions. The aluminum-anodized construction makes it particularly suited for engine fuel systems, turbo boost controllers, and auxiliary hydraulic systems where weight savings and corrosion resistance matter. Compatible with any NPT-threaded port configuration, the 3/8 X 1/8 Nipple Bush integrates seamlessly into existing manifold designs and simplifies custom line assembly for professionals and builders alike.