2004.5-2007 Ram Cummins | 5.9L Full Turbo Back 4" or 5" Exhaust System

2004.5–2007 Ram Cummins | Full 5.9L Exhaust System (4" and 5" Options)

This full exhaust system for the 2004.5–2007 Dodge/Ram Cummins 5.9L is offered in multiple configurations to suit your build and budget:

Available Options

• Diameter: 4" or 5"
• Material: Aluminized or T409 stainless steel

Overview

This is a high end drop-shipped, full exhaust system sourced overseas. This system remains a solid, functional choice for customers seeking the most affordable complete 5.9L exhaust setup with respectable performance and durability and is the only option available for the 04-07 year range. 

Features

• Choice of diameter:
  • 4" — typically better for mild builds, fuel economy, and lower noise
  • 5" — preferred for higher flow, reduced restriction, and performance applications
• Material choices:
  • Alumized steel — cost-effective with basic corrosion resistance
  • T409 stainless steel — improved corrosion resistance and longevity compared with alumized
• Complete system coverage: Designed to replace the full OEM exhaust from the turbo outlet back
• Bolt-on installation: Intended for direct fit; minor adjustments may be required depending on chassis, hanger differences, or previous modifications

Fitment

• 2004.5–2007 Dodge/Ram Cummins 5.9L (all wheelbases)
  (Note: verify clearance on lifted trucks and custom suspensions)

Performance & Expectations

• Provides noticeable exhaust flow improvement over restrictive stock systems
• 5" configuration supports better flow for tuned trucks or engines making more power
• Alumized option is a budget compromise with decent life expectancy in moderate environments
• T409 stainless offers longer service life in corrosive conditions (e.g., snow/road salt climates)

Installation

• Typically bolt-on using existing hangers
• May require minor alignment or hanger tweaks during install