Mishimoto 1999-2005 Ford F-250/F-350 & Excursion Aluminum Degas Tank - Natural (7.3L) MMRT-F2D-99EN

Fits select 1999-2005 Ford F-250 Super Duty, F-350 Super Duty, and Excursion (7.3L).

After decades of heat cycles, the factory plastic degas tank on the 7.3L Powerstroke becomes brittle and cloudy, leading to hairline cracks and making it nearly impossible to monitor coolant levels. Mishimoto solves this with a robust, all-aluminum expansion tank designed to outlast the vehicle. This fully-welded unit replaces the failure-prone OE plastic housing with a TIG-welded aluminum body that offers a 43% increase in coolant capacity over stock.

For ease of maintenance, this tank features an integrated sight glass, allowing for instant fluid level checks without the need for a flashlight. It also includes an additional 1/8-inch NPT port for those looking to add an aftermarket coolant pressure sensor or gauge. Finished in a natural aluminum, it provides a clean, professional look under the hood while ensuring long-term cooling system reliability.

• Precision TIG-welded full-aluminum construction
• 43% increased coolant capacity over the factory degas tank
• Integrated sight glass for rapid fluid level monitoring
• Includes 1/8-inch NPT port for pressure sensors
• Natural aluminum finish
• Backed by the Mishimoto Lifetime Warranty
• Manufacturer Part Number: MMRT-F2D-99EN