Garrett 403069-0199 Compressor Housing O-Ring for 1999.5–2003 7.3L Powerstroke

Genuine Garrett compressor housing O-ring (part #403069-0199) designed specifically for the GTP38 turbocharger used on late-1999.5 through 2003 Ford 7.3L Powerstroke engines. This O-ring creates the critical seal between the compressor housing and the compressor backplate.

A worn, damaged, or missing housing O-ring is a common source of boost leaks. When it fails, you’ll lose boost pressure, see elevated EGTs, and notice reduced power and throttle response. Replacing it with the correct OEM-spec Garrett O-ring restores proper sealing, protects your turbo investment, and helps the engine deliver consistent performance.

Key Features

• Genuine Garrett part for exact OEM fit and sealing performance
• Seals the compressor housing to the backplate on GTP38 turbos
• Helps maintain boost pressure and prevent performance-robbing leaks
• Recommended anytime the compressor housing is removed (turbo rebuilds, compressor wheel upgrades such as Wicked Wheel, housing swaps, etc.)
• Durable construction built to handle the heat and pressure of 7.3 Powerstroke applications

Fitment 1999.5–2003 Ford 7.3L Powerstroke (F-250, F-350, F-450, F-550 Super Duty and Excursion models equipped with the GTP38 turbo).

This is an inexpensive but essential service item. Keep a spare on hand or replace it during any turbo work to avoid boost leaks and ensure your 7.3 runs at its full potential.