Description
The Mishimoto MMHOSE-F2D-17OV is a one-piece silicone coolant overflow Y-hose engineered specifically for trucks running the 6.7L Powerstroke engine. It replaces the factory plastic-fitting overflow hose — a component known to crack and leak over time — with a seamless silicone design built to eliminate that weak link in your cooling system. A built-in one-way valve and protective heat sleeves come standard, giving this hose a level of durability the factory piece was never designed to match.
Because the stock overflow hose relies on brittle plastic connections, it’s a common source of coolant leaks that can eventually lead to overheating and unplanned downtime. This Mishimoto Cooling upgrade removes those factory failure points by consolidating the hose into a single, seamless silicone piece. The multi-layer silicone construction is built to outlast factory rubber, while the integrated one-way valve keeps coolant flowing where it should. Each kit ships with new worm-gear clamps for a consistent seal and is backed by the Mishimoto Lifetime Warranty, making it a straightforward, direct-fit way to shore up your truck’s cooling system.
Vehicle Applications
This hose is a specific-fit part designed for 2017-2019 Ford F-250 Super Duty and F-350 Super Duty trucks equipped with the 6.7L Powerstroke, spanning XL, XLT, Lariat, King Ranch, and Platinum trims for 2017-2019 and the Limited trim for 2018-2019. It also fits 2017-2019 Ford F-450 Super Duty XL and 2017-2019 Ford F-550 Super Duty XL models with the same 6.7L Powerstroke engine.
Features
- One-piece design eliminates six potential leak points found on the factory plastic hose
- Multi-layer silicone construction outlasts factory rubber hoses
- Integrated one-way valve maintains proper coolant flow
- Included worm-gear clamps provide a consistent, reliable seal
- Protective heat sleeves guard against high engine bay temperatures
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMHOSE-F2D-17OV
- Product Type: Cooling
- Hose Material: Silicone
- Hose Color: Black
- Grade Type: Performance
- Fit Type: Specific (direct-fit)
- Clamps Included: Yes
- Kit Includes: (1) Overflow Hose, (4) Worm Gear Clamps, Mishimoto Lifetime Warranty
Frequently Asked Questions
What vehicles does this Mishimoto overflow hose fit?
It’s a direct-fit part for 2017-2019 Ford F-250 and F-350 Super Duty trucks (XL, XLT, Lariat, King Ranch, and Platinum trims for 2017-2019, and Limited trim for 2018-2019), as well as 2017-2019 Ford F-450 Super Duty XL and 2017-2019 Ford F-550 Super Duty XL, all equipped with the 6.7L Powerstroke.
What is the hose made from?
It’s made from multi-layer silicone, built to outlast the factory rubber hose.
Does the kit include mounting clamps?
Yes, the kit includes worm-gear clamps for a consistent, reliable seal.
What comes in the box?
The kit includes (1) Overflow Hose, (4) Worm Gear Clamps, and the Mishimoto Lifetime Warranty.
What problem does this hose solve compared to the factory part?
The factory overflow hose uses plastic fittings that are known to crack and leak over time; this one-piece silicone hose removes those failure points.
Does this hose include any temperature protection?
Yes, it features protective heat sleeves to guard the hose against high engine bay temperatures.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
