Mishimoto Aluminum Reservoir Expansion Tank Wrinkle Nitrous Blue - 2013-2018 Ford Focus ST / 2016-2018 Focus RS
Mishimoto Aluminum Reservoir Expansion Tank Wrinkle Nitrous Blue - 2013-2018 Ford Focus ST / 2016-2018 Focus RS
Mishimoto
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PRODUCT DETAILS ▾
RallySport Direct now gives you an option of getting the Mishimoto Aluminum Coolant Expansion Tank. Mishimoto fabricated this tank completely from high-quality Tig-welded 6061 aluminum materials to outlast the design of the plastic factory tank. It is compatible with the stock expansion tank cap and will include an overflow nipple on the neck for adding an additional coolant tank for those of you who need to be in compliance with NHRA rules.
Other features include a sight tube which will allow for proper hot and cold coolant levels. An internal baffle keeps coolant near the overflow port during aggressive driving conditions which will prevent air entry into the coolant system.
Note that this particular expansion tank will come powder-coated in the Nitrous Blue finish for extra protection against corrosion, and to add a nice touch to your engine bay.
WHY WE CARRY THIS ▾
We only list parts we’d run ourselves or recommend to a friend building a real car. If it feels vague, unverified, or inconsistent, it doesn’t make the cut.
- Fitment-first mindset — no “universal” roulette
- Brand reputation matters — we favor proven manufacturing
- Support that actually responds with real answers
WHAT TO EXPECT ▾
This is the clean path: correct fitment, clean install, and results that match the intent.
- Install-ready experience with correct mounting where provided
- Finish that holds up to real driving, not just photos
- Selections on this page drive the exact fitment shipped
TRUST, BUILT INTO THE PROCESS.
Anyone can list parts. We curate what belongs on a serious build. Our goal is simple: fewer surprises, cleaner installs, and confidence when you hit “Buy.”
Fitment checked
We prioritize vehicle-specific listings and clear selection logic so you’re not gambling on compatibility.
Brand discipline
Proven manufacturing and consistent quality matter more than hype. We bias toward what actually holds up.
Real support
If you have a question, you’ll get a human answer that helps you finish the build — not a copy-paste shrug.
RallySport Direct now gives you an option of getting the Mishimoto Aluminum Coolant Expansion Tank. Mishimoto fabricated this tank completely from high-quality Tig-welded 6061 aluminum materials to outlast the design of the plastic factory tank. It is compatible with the stock expansion tank cap and will include an overflow nipple on the neck for adding an additional coolant tank for those of you who need to be in compliance with NHRA rules.
Other features include a sight tube which will allow for proper hot and cold coolant levels. An internal baffle keeps coolant near the overflow port during aggressive driving conditions which will prevent air entry into the coolant system.
Note that this particular expansion tank will come powder-coated in the Nitrous Blue finish for extra protection against corrosion, and to add a nice touch to your engine bay.
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