27WON Performance Overflow Tank for 2022+ Honda Civic Si / 2023+ Acura Integra 1.5T [FE1/DE4] Read reviews

Pop the hood on any 11th Gen Honda Civic Si or Acura Integra and you are immediately greeted with a milk jug in the engine bay. What’s this ugly white plastic jug? It’s the coolant overflow tank where excess coolant is collected that’s not being circulated in the engine and accessories.

And let’s just say no one is proud to show the Honda part off at their next car show or meet…. until now! What you see here is our all-new Coolant Overflow Tank. It's worthy of a place in your engine bay. This is designed from the ground up to replace your OE coolant tank with a more robust setup that performs better and looks better. Ditch that silly milk jug and get real about some aesthetics.

Some of the features that make our coolant overflow tank stand out include:

•  Full seam welded and powder coated construction
•  Billet Aluminum cap in your choice of colors
•  Perfect 100% drop-in fitment

Don’t settle for plastic like Honda intended. The factory plastic tank gets yellow and brittle over time. Our design doesn’t. We constructed our Coolant Overflow Tank from thick Aluminum, fully seam welded to prevent leaks, then powder coated with a nice durable finish meant to last the entire life of your ride.

Now, this isn’t our first Coolant Tank, but it is the first one that uses a traditional sight glass. They’re convenient when it comes to checking and topping off your coolant levels. Just fill your Coolant Tank up to between the very bottom and the middle of the sight glass and you are ready to roll with just the right amount of fluid.

Your new Coolant Tank comes with a choice of Billet Aluminum Caps in either Redline Red or Stealth Black.

The body of the tank comes with a subtle “27WON” logo etched right on the front side. Just enough to signal you’re rocking some of the best mods around, but not too much flash that you’re going to be ricing up the entire scene at your next event.

Want to clean up your engine bay even more? Add our matching Billet Oil cap into the mix to round out the look.

Perfect fitment the first time. We love when parts fit just right so when you install your 27WON Overflow Tank, you can be sure it’ll fit just like if not better than the factory piece you just removed. Everything you need to bolt down this beauty is included down to the last nut and bolt. 30 minutes or less and you’ll be popping your hood showing off your new mod to every person at the next Honda meet.

Check out our approach to creating our upgraded coolant overflow tank below

PART 1:
Honda fails us again?!
PART 2:
Catch all the final details!

• Fitment not yet confirmed for 2.0L applications
• Designed for 6 Speed, Manual Transmission applications. 1.5T CVT applications not confirmed

• Limited Lifetime Warranty
• Designed in Vancouver, WA, in the greater PNW
• Full color digital installation instructions. Install app downloads can be found here Play Store and Itunes
• Free shipping in the lower 48 states and discounted international shipping

1 Hour Install Time