Diamond Eye K4338A-RP 4in Cat-Back No Muffler for 03-07 Ford 6.0L Powerstroke

Vehicle Fitment

• 2003-2007 Ford F-250 Super Duty (All Cabs & Beds, 6.0L Powerstroke V8)
• 2003-2007 Ford F-350 Super Duty (All Cabs & Beds, 6.0L Powerstroke V8)

Features

• 4-inch aluminized steel cat-back exhaust system (no muffler)
• Mandrel-bent tubing for optimized exhaust flow and reduced backpressure
• Single passenger-side exit for factory-style routing
• Direct bolt-on installation using OEM hangers and included hardware
• Aluminized finish offers corrosion resistance and durability
• Low-restriction straight pipe design improves throttle response
• Can help lower exhaust gas temperatures (EGTs)
• 1-year manufacturer defect warranty

Specifications

• Material: Aluminized steel
• Main Tube Diameter: 4 in
• System Type: Cat-back (from converter-back to rear)
• Muffler Included: No (muffler-delete / straight pipe)
• Exit Location: Single passenger-side
• Fitment: Direct fit for 2003-2007 Ford Super Duty 6.0L Powerstroke
• Emission Notes: Retains factory catalytic converter; not CARB legal if muffler deleted in some states
• Warranty: 1-year manufacturer defect

Included Components

• 1x 4-inch aluminized cat-back exhaust assembly (no muffler)
• 1x Set of clamps
• 1x Set of hangers
• Hardware kit for installation

Product Description

The Diamond Eye K4338A-RP 4-inch aluminized cat-back exhaust system is engineered specifically for 2003-2007 Ford F-250 and F-350 Super Duty trucks equipped with the 6.0L Powerstroke diesel engine. Built with mandrel-bent 4-inch tubing and a straight pipe (no muffler) configuration, this exhaust system reduces backpressure and enhances exhaust flow for improved throttle response and a more aggressive exhaust note. 

Constructed from durable aluminized steel with a corrosion-resistant finish, the K4338A-RP installs easily using OEM hanger locations and included clamps and hangers, making it a direct bolt-on upgrade that retains factory routing. Its single passenger-side exit maintains a clean appearance while delivering a deeper, raw exhaust tone that enthusiast drivers appreciate. This system retains the factory catalytic converter but does not include a muffler, so sound levels will be louder and more aggressive than stock - ideal for performance-oriented builds.

Whether you're hauling heavy loads or simply seeking a more responsive driving experience, the Diamond Eye K4338A-RP offers a cost-effective way to upgrade your Super Duty's exhaust system. Backed by a 1-year manufacturer defect warranty, this kit brings reliability and performance to your 6.0L Powerstroke.