It's been over a decade since the last 1999-2003 7.3L Powerstroke rolled off the assembly line. A lot can happen to a vehicle in that much time. And, if you're like many 7.3L Powerstroke owners, you've been through more than one degas tank. Over time, the stock plastic tank becomes brittle and cloudy, making it prone to breaking and impossible to see the coolant level. Luckily, Mishimoto has a solution that will look and function in 15 years, just as well as it does today. Replace your ugly and brittle plastic stock tank with Mishimoto's all-aluminum 1999-2003 7.3L Powerstroke degas tank. The fully-welded design of Mishimoto's degas tank means that it won't crack and leak coolant, and the integrated sight glass makes checking the coolant level easy. No more trying to shine a flashlight through a muddy tank. For even more convenience, the Mishimoto degas tank includes an additional 1/8in NPT port for easy pressure monitoring. In the unlikely event you have an issue, Mishimoto has you, and your 1999-2003 Ford 7.3L Powerstroke, covered.
Features
- Sight glass allows for quick and easy reading of coolant level
- 43-percent increase in coolant capacity over stock degas tank
- Full-aluminum construction with durable, TIG-welds
Listed for 1 vehicle: the fitment table on this page shows each year, make and model it fits.
Part number: MMRT-F2D-99EN (MMRTF2D99EN)
Mishimoto 99-03 Ford F-250 Aluminum Expansion Tank - Natural
- Canadian company, prices in CAD
- Shipping and duties shown before you pay, no surprises at the door
- 30 day returns from delivery, see policy
Vehicle fitment
Estimated fitment — verify before purchase| Years | Make | Model |
|---|---|---|
| 1999–2003 | Ford | F-250 |
Specifications
Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | Mishimoto |
| Part number | MISMMRT-F2D-99EN |
| Category | Exhaust & Performance |
Customer reviews

Worth adding
Useful in any truck — ships separately in its own box.
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