Diamond Eye Tubing 4in SS Y PIPE DIA400Y-SS

This 4-inch Y-pipe from Diamond Eye is constructed from 409 stainless steel, a material chosen for its good balance of corrosion resistance and durability in exhaust applications. It's designed to help split a single exhaust stream into two, which is often a key step when modifying or upgrading a performance diesel exhaust system. Mandrel bending is used in its fabrication, meaning the pipe maintains a consistent diameter throughout the bend, which helps keep exhaust gas flow smooth and unrestricted. This can make a notable difference in how efficiently your engine breathes.

Diamond Eye uses CNC mandrel bending machines to produce their exhaust components, ensuring precise bends and consistent sizing from 3/8" up to 5" OD tubing. This Y-pipe is part of their performance diesel exhaust line, aimed at helping you achieve better exhaust flow. While it's a well-built part, keep in mind that it is not CARB approved and cannot be shipped to California.