Mishimoto Aluminum Degas Tank for 2011+ Ford 6.7L Powerstroke

Description

The Mishimoto MMRT-F2D-11SMWBK is an all-aluminum secondary degas tank engineered specifically for the 2011+ Ford 6.7L Powerstroke Super Duty’s secondary cooling system, replacing the factory’s crack-prone plastic reservoir with a durable, aircraft-grade aluminum tank. Available in a natural aluminum finish or micro-wrinkle black powder coat, it’s built to handle the same punishing conditions as the secondary radiator and air-to-water intercooler it supports.

As part of Mishimoto’s Cooling lineup, this degas tank keeps the 6.7L Powerstroke’s secondary cooling circuit topped off and free of air pockets, using internal baffles to hold coolant near the outlet port during aggressive driving. A 15.65-percent increase in coolant capacity over the stock tank adds extra thermal buffer, while an integrated sight glass on the side of the tank lets you check fluid level at a glance. Whether you’re keeping a work truck on the road or maintaining a Super Duty built for towing, this all-aluminum degas tank brings long-term durability to a part of the cooling system that OE plastic construction can’t match.

Vehicle Applications

This Mishimoto degas tank is designed for the 2011+ Ford Super Duty lineup equipped with the 6.7L Powerstroke, covering the F-250, F-350, F-450, and F-550. Coverage runs 2011-2026 for XL, XLT, Lariat, and King Ranch trims across the F-250, F-350, and F-450, plus F-550 XL, XLT, and Lariat trims over the same span. Platinum trims are covered from 2013-2026 on the F-250, F-350, and F-450, while Limited trims are covered from 2018-2024 across those same three chassis. Earlier F-250 FX4 models (2011-2014) and F-250 Base trucks (2015-2016) are included, as are F-450 and F-550 Base trims from 2011-2016. The newest F-250 Platinum Plus (2025-2026) rounds out the coverage. Removable fittings allow installation on both 2011-2016 and 2017+ model years.

Features

• Full-aluminum construction with durable, precision TIG-welds
• Sight glass allows for quick and easy reading of coolant level
• Internal baffles keep coolant near the overflow port during aggressive driving, preventing air entry into the coolant system
• 15.65-percent increase in coolant capacity over the stock tank
• Removable fittings for installation on both 2011-2016 and 2017+ models
• Available natural finish makes customization easy through powder-coating, anodizing, or hydro-dipping
• Fits with the stock cap
• Available in natural or micro-wrinkle black powder coated finish
• Backed by the Mishimoto Lifetime Warranty

Specifications

• Brand: Mishimoto
• Part Number: MMRT-F2D-11SMWBK
• Product Type: Cooling
• Engine Code: 6.7L Powerstroke
• Chassis Codes: F-250, F-350
• Finish Options: Natural aluminum or micro-wrinkle black powder coat
• Includes: (1) Mishimoto Aluminum Degas Tank w/ Sight Glass, (1) Removable Quick-Disconnect Fitting (2011-2016 Models), (1) Removable Hose Barb (2011-2016 Models), (2) Threaded Plugs (2017+ Models), (2) Notecards, Mounting Hardware, Mishimoto Lifetime Warranty
• Installation Note: 22 in-lbs (2.5NM) recommended for all worm-gear clamps; operating range is 18-27 in-lbs (2-3NM); do not exceed the maximum torque rating of 27 in-lbs (3NM)
• Mishimoto recommends checking the sight glass after a few heat cycles to confirm proper coolant level

Frequently Asked Questions