Diamond Eye K4319S-TD 4" Stainless Steel Turbo-Back Turn-Down Exhaust with Muffler – 7.3L Powerstroke

Upgrade your 7.3L Powerstroke with the Diamond Eye K4319S-TD 4-inch T409 stainless steel turbo-back exhaust system. This complete kit replaces the entire exhaust from the turbo back and features a single underbody turn-down exit with a performance muffler for a deep, refined tone, improved flow, and reliable everyday performance.

Key Features

• 4" mandrel-bent T409 stainless steel tubing for maximum exhaust flow and durability
• Includes performance muffler (deep tone with reduced drone compared to straight pipe)
• Single turn-down (underbody) exit
• Turbo-back design – replaces the full system from the turbo rearward
• Direct-fit, bolt-on installation that utilizes OEM hangers
• Made in the USA

Performance Benefits

• Increased horsepower and torque
• Improved fuel economy
• Lower exhaust gas temperatures (EGTs)
• Better throttle response
• Aggressive yet controlled exhaust note

Fitment

Fits 2000–early 2003 Ford F-250 / F-350 Super Duty with the 7.3L Powerstroke, automatic transmission, and non-catalyst models. Compatible with all cab and bed lengths.

This stainless steel system is built for long-term reliability and is a popular choice for 7.3 owners who want stronger performance, cooler EGTs, and a better sound without going fully straight-pipe loud.