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🔥 Stay cool, drive cooler — the ultimate overflow tank upgrade!
The EVIL ENERGY Coolant Overflow Tank is a universal 800ml aluminum alloy radiator overflow bottle designed for most cars. Featuring a heat-dissipating ventilation hole and a leak-proof O-ring seal, it ensures efficient coolant management and durability. Its sleek black finish and easy vertical installation make it a must-have upgrade for any professional-grade cooling system.

















| ASIN | B07Y35ZNHM |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #7,007 in Automotive ( See Top 100 in Automotive ) #3 in Automotive Replacement Engine Coolant Recovery Kits |
| Brand Name | EVIL ENERGY |
| Capacity | 800 Milliliters |
| Compatible with Vehicle Type | Car |
| Customer Reviews | 4.6 4.6 out of 5 stars (791) |
| Exterior Finish | Aluminum |
| Fit Type | Universal |
| Item Weight | 1.7 Pounds |
| Manufacturer | EVIL ENERGY |
| Manufacturer Part Number | FS00483BK-1 |
| Material Type | Aluminum |
| Model Number | FS00483BK-1 |
| Product Grade | like new |
S**R
Nice product
I've used quite a few Evil Energy products and have never been disappointed in the quality. No exception here. The bottle is heavy gauge aluminum with the Evil Energy signature flawless and durable gloss black coating. The weld on the hose nipple is stout. The dimple on the bracket that affixes to the tank is such that when dimpled at the factory, it causes the bracket to not sit parallel to the tank and the angle is no longer 90 degrees. Will cause the tank to cant when mounted. A little Dremel tuning in a vise and a couple raps with a soft blow sorts this right out. Very nice product at a great price.
E**M
Works well. Looks good
Works well. Good purchase
R**G
Very easy to install
Very good product and price was great and very happy with product
S**1
Nice little overflow / reservoir
Overall I think the product is good. It was used to add a coolant reservoir to a V8 swapped Miata. Not a lot of room in the engine bay, and this was small enough to fit. Total volume may not be sufficient considering the volume of coolant in the engine and radiator, and the heat it'll generate to cause fluid expansion. It's certainly better than the previous owner who just left the radiator to dump fluid on the ground when hot. Only complaint, which others have mentioned as well, is that the included hose internal diameter is too large for a good fit / seal on the barb on the radiator. Otherwise the product seems well-built, isn't tough to install, looks good, and does its job.
L**S
Works great!
Perfect fit for the custom cooling sistem i did on my project car
I**6
Very impressed
Impressed by this product. Shiny black finish was flawless product didn’t feel cheap. Basic mounting system included which is versatile and could fit just about any application. Strongly recommend this one. Can’t beat it for the price.
D**I
Great Quality
We have used many of their products always good quality and good looks. Overflow tank was just what we needed to finish the build.
T**R
Easy install, works great!
Easy install, works great!
C**O
Lo instale en la Mazda b2000 y quedó muy bien
Trustpilot
2 months ago
1 day ago