Diamond Eye Manufacturing 323003 4-Inch Performance Exhaust Pipe Second Section Single Pass

The Diamond Eye Manufacturing 323003 is a 4-inch diameter performance exhaust tail pipe designed as the second section of a single-pass exhaust system for 1993–2001 Chevy and GMC 2500/3500 trucks equipped with the 6.5L diesel engine. This pipe accommodates all cab and bed configurations and installs on the passenger side, making it an ideal direct-fit upgrade over restrictive factory exhaust components.

Manufactured at Diamond Eye's Oregon facility using CNC mandrel bending technology, this pipe maintains a consistent 4-inch inner diameter throughout every bend — eliminating the flow restrictions common with crush-bent pipes. The result is improved exhaust scavenging, reduced backpressure, and better overall engine efficiency for your 6.5L diesel.

Key Features:

• 4-inch diameter performance exhaust pipe for maximum flow
• Second section only — single pass, passenger side routing
• CNC mandrel bent for consistent inner diameter throughout all bends
• Available in aluminized steel for durability and corrosion resistance
• Direct-fit design for all cab and bed lengths
• Part of Diamond Eye's Performance Series exhaust lineup
• Precision fabricated from tubing processed to exact OEM and aftermarket specifications

Diamond Eye Manufacturing has built its reputation on producing some of the most precisely engineered diesel exhaust components on the market. The 323003 is a straightforward, quality-built solution for restoring or upgrading the exhaust system on your 6.5L diesel-powered Chevy or GMC heavy-duty truck.