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Mishimoto MMRT-RS-16EBK Expansion Tank Fits Ford Focus ST 2013+/Focus RS 2016-2018 Black

  • Based on 41 reviews
Condition: New
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Availability: Only 3 left in stock, order soon!
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Arrives Saturday, Feb 14
Order within 6 hours and 39 minutes
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Color: Black


Features

  • These are complete line of Heavy-Duty Shop Products that will bring you years of reliable performance
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Description

Add some reliability and engine bay styling to your Focus RS/ST with the Nishimoto RS/ST expansion tank. This tank features internal baffles to prevent coolant starvation from overflow ports on the engine. Also, during high speed cornering, braking, and acceleration, the internal baffles reduce coolant sloshing. The engineers at Nishimoto have included a sight tube to allow for proper observation of hot and cold coolant levels, making engine maintenance much easier. Eventually, you'll have to consider the health of your plastic expansion tank. Plastic is prone to failure after years of constant temperature variations. The Nishimoto tank is constructed from durable, TIG- welded aluminum for optimal durability and longevity. It reuses the stock expansion tank cap and includes an overflow nipple on the fill neck for adding an additional coolant tank so your Focus RS stays NHRA legal. All areas of concern are covered with this upgrade. It's worth noting the Focus's stock tank is an engine bay eye sore, whereas the Nishimoto tank comes in three different variants to help with aesthetic customization: black, wrinkle red, or Wrinkle Nitrous Blue. Each of these options works with both the 2013+ Focus ST and the new 2016+ Focus RS. For convenience, you can install your new coolant tank upgrade in under one hour as it was engineered with perfect fitment in mind. Like all our Focus RS parts, this expansion tank also includes the Nishimoto Lifetime .

Brand: Mishimoto


Item dimensions L x W x H: 15 x 9.5 x 9.5 inches


Exterior Finish: Machined


Vehicle Service Type: Car


Item Weight: 1.85 Kilograms


Fuel Type: ‎Gasoline


Product Grade: ‎Replacement Part


Fit Type: ‎Vehicle Specific


OEM Part Number: ‎MMRT-RS-16EBK


Global Trade Identification Number: ‎30


UPC: ‎748354036930


Automotive Fit Type: ‎Vehicle Specific Fit


Manufacturer: ‎MISHIMOTO


Model: ‎MMRT-RS-16EBK


Item Weight: ‎4.08 pounds


Product Dimensions: ‎15 x 9.5 x 9.5 inches


Item model number: ‎MMRT-RS-16EBK


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎MMRT-RS-16EBK


Date First Available: May 25, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Feb 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great mod to improve the engine bay aesthetic
Color: Wrinkle Red
Of all the mods I have put on the Focus ST this was probably the easiest. Only took 15-20 mins and looks much better than the plastic stock coolant reservoir.
Reviewed in the United States on May 28, 2022 by Drew Adams

  • Great product.
Color: Black
This expansion tank is a great replacement for the OEM. The OEM, didn't last long and developed hairline fractures. Mishimoto's expansion tank looks good under the hood and it only took 15 minutes to install myself. Great product, I would recommend it to everyone I know.
Reviewed in the United States on February 18, 2023 by Adrian E. Reyno

  • Easy and worth it
Color: Black
The OEM coolant tank is a well known eyesore on these cars, turn a nasty yellow over time, and start cracking too soon. The aluminum tank drastically changes the look under your hood and will last a long time. Super easy to install and took about 15 minutes. Remember to be safe when dealing with coolant and use YouTube if you have to. ... show more
Reviewed in the United States on September 24, 2023 by Rene Valdivia Rene Valdivia

  • Solid, stylish and functional. Also expensive.
Color: Wrinkle Nitrous Blue
Mishimoto makes awesome products of the highest quality. My Focus RS is probably half Mishimoto. My only complaint is the price. You can find other custom welded products much cheaper. So why pay more? You get what you pay for and if you want the best, it's going to cost you.
Reviewed in the United States on May 5, 2024 by Brandon

  • Mishimoto has lifetime warranty
Color: Wrinkle Nitrous Blue
This beats the plastic coolant tank which I replaced due to a small crack which led to a leak of coolant.
Reviewed in the United States on January 10, 2025 by Mee

  • Another quality Mishimoto product!
Color: Wrinkle Red
Beautifully made, quality at it’s finest and beautiful paint. Sight glass is excellent for viewing coolant level. Installation was simple! 10 minutes.
Reviewed in the United States on December 24, 2019 by Mondo Mondo

  • 2016 Focus RS Nitrous Blue
Color: Wrinkle Nitrous Blue
Purchased about a month ago.. has been holding up very strong, easy install, and looks great matches up with the nitrous blue very well. Honestly surprised it was not this way from the factory this is far superior to the cheap plastic. Be ready with some extra coolant 1st because you may spill, 2nd because this tank is slightly larger and you may need it to get the level correct and please do not mix coolants check with your dealer if you are unsure which type to use. 2016 Focus RS Nitrous Blue ... show more
Reviewed in the United States on February 13, 2021 by Travis Johnson

  • Go Mishi!
Color: Wrinkle Nitrous Blue
Solid construction. Easy install. Looks great under the hood!
Reviewed in the United States on May 23, 2019 by Justin Justin

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