SKU: 13703256825

Aluminium Expansion Tank Ford Focus ST 12+/RS 16+ - Black

Sale price$196.65 Regular price$218.50
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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

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Description

Aluminium Expansion Tank Ford Focus ST 12+/RS 16+ - BlackAdd some reliability and engine bay styling to your Focus RS ST with the Mishimoto 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 Mishimoto have included a sight tube to allow for proper observation of hot and cold coolant levels, making engine

Add some reliability and engine bay styling to your Focus RS/ST with the Mishimoto 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 Mishimoto 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 Mishimoto tank is constructed from durable, TIG-welded aluminium 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 Mishimoto 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 2012+ Focus ST and the new 2015+ 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 Mishimoto Lifetime Warranty.

  • Direct fit for the 2016+ Ford Focus RS / 2013+ Ford Focus ST
  • Sight tube allows for proper hot and cold coolant levels
  • Internal baffle keeps coolant near overflow port during aggressive driving, preventing air entry into coolant system
  • 100% aluminium, fully-welded construction for maximum durability during repeated temperature transitions
  • Overflow nipple on fill neck allows for installation of additional NHRA-mandated overflow reservoir
  • Fits with stock overflow tank cap
  • Available in Wrinkle Nitrous Blue, wrinkle red, or black powder-coated finish
  • Mishimoto Lifetime Warranty
  • Material: 6061 Aluminium
  • Baffled: True
  • Engine Codes: 2.0L EcoBoost / 2.3L EcoBoost​
  • Note: After a few hot and cold cycles, Mishimoto recommends checking the sight tube on the side of the expansion tank to confirm proper coolant level.
  • (1) Aluminium Expansion Tank w/ Sight Tube
  • (1) Overflow Hose
  • (2) Rubber Sleeves
  • Mishimoto Lifetime Warranty
  • 2012+ Ford Focus ST
  • 2016+ Ford Focus RS
        Shipping Notes
        • Free Standard Shipping on $100+ Orders to the USA.
        • Except Preorder products are shipped in 48 hours.
        • Delivery to the USA:
        1. Standard Shipping : 3-10 business days
        • If time is of the essence, please consider selecting expedited delivery for faster service.
        Exchange/Return Notes
        • We offer a 30-day return/exchange service after receiving.
        • Final sale items are not eligible for returns or exchanges.
        • To process your return/exchange, please contact us at [email protected]
        • Please click here for more details>>> Return & Exchange Policy
        SKU: 13703256825

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        4.7 ★★★★★
        Based on 21 reviews
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        cheryl
        Battle Creek, US
        ★★★★★ 5
        dogs loved them
        Flavor Name: Boy, Size: 8 Count (Pack of 1)
        great for dogs birthday - great to share with other dogs
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on March 7, 2026
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        Amazon buyer
        Houston, US
        ★★★★★ 5
        My dog loved these!
        Flavor Name: Boy, Size: 8 Count (Pack of 1), Flavor Name: Boy, Size: 8 Count (Pack of 1)
        My dog loved these birthday treats! They were so cute.
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on January 19, 2026
        S
        Verified Purchase
        Scott Richardson
        Draper, US
        ★★★★★ 5
        Great Product
        Flavor Name: Boy, Size: 8 Count (Pack of 1)
        My dogs loved these after one of their birthdays. The treats were packaged very nicely and would buy again,
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on March 11, 2026
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        𝐒ʰᵒʳᵗⁱᵉ𝐈ⁿ𝐏ʰⁱˡˡʸ꧂
        Lake Worth, US
        ★★★★★ 3
        Wouldn't buy again
        Flavor Name: Boy, Size: 8 Count (Pack of 1)
        They were all individually wrapped which was annoying to take them out the wrapper without them falling apart
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on April 26, 2026
        S
        Verified Purchase
        Stephanie Dutey
        Cuba, US
        ★★★★★ 5
        Finally a Toy My Pitbull Hasn’t Destroyed in 5 Minutes
        Color: Blue+Red, Color: Blue+Red
        I have a 65 lb pitbull who destroys most toys almost immediately, so I’m always skeptical when products claim to be “indestructible.” Most toys last maybe a few minutes in my house before pieces are everywhere. These have actually held up surprisingly well. The material feels durable and thick enough to handle really aggressive chewing, and so far my dog hasn’t been able to destroy them like he does with most other balls and squeaky toys. That alone makes these worth it to me. I also really like the size. They’re large enough that I don’t have to constantly worry about him accidentally swallowing them or choking while playing, which is a huge plus for bigger dogs. The squeaker inside also keeps him interested longer since he usually gets bored quickly with toys that don’t make noise or bounce around well. If you have a strong chewer or larger dog and you’re tired of replacing destroyed toys constantly, these are definitely worth trying.
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on May 10, 2026

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