EVIL ENERGY aluminum coolant overflow tank 800ml – universal radiator expansion bottle, silver, O-ring sealed & NBR hose

EVIL ENERGY's 800ml aluminum coolant overflow tank is a universal, compact radiator expansion bottle engineered to replace plastic reservoirs and provide reliable containment and venting for engine coolant.

This compact overflow bottle is made from lightweight aluminum alloy with an 800ml capacity and a sealed O-ring cap for leak resistance. It comes with a flexible NBR hose and a 1/16" ventilation hole to help dissipate heat, and its universal dimensions suit most vehicle engine bays—provided there is adequate installation space. The tank is designed for vertical mounting and includes installation instructions so you can swap it into many car models as an aftermarket radiator overflow container.

Will this overflow tank fit my vehicle?

The EVIL ENERGY tank is intended as a universal replacement for many passenger cars and light trucks, but you should confirm clearance and hose compatibility before ordering. Measure the available mounting area and check that your radiator hose ID matches the tank's fittings.

• Length: 7.48 inch (19 cm) — check vertical clearance.
• Bottom diameter: 2.95 inch — verify fit in your mounting bracket location.
• Cap diameter: 1.96 inch — ensure access for filling and inspection.
• Hose inner diameter: 5/16 inch — compatible with common radiator outlet sizes.

How durable and safe is the aluminum construction?

Constructed from aluminum alloy, this overflow bottle resists cracking and deformation common in plastic reservoirs under heat cycling. The included O-ring cap reduces the risk of coolant leakage, and the NBR hose offers oil- and heat-resistant flex for routing in tight engine bays.

• Aluminum alloy body for lightweight longevity and heat tolerance.
• NBR (nitrile) hose for flexible, heat-resistant connections.
• O-ring cap seal to help prevent drips and seepage.
• 1/16" vent hole for controlled ventilation and pressure equalization.

How do I install and maintain the EVIL ENERGY overflow bottle?

Install the tank vertically and away from direct heat sources such as exhaust manifolds. The package includes instructions; basic hand tools and a secure mounting point are usually all you need for a straightforward retrofit.

• Mount vertically for proper overflow and return flow operation.
• Keep the tank clear of high-heat components to avoid accelerated wear.
• Use the provided hose and clamp to attach to the radiator overflow outlet.
• Periodically inspect the O-ring and hose for signs of aging or leaks.

What performance or practical benefits can I expect?

Switching to an aluminum overflow tank delivers improved dimensional stability under heat and a more durable appearance compared with many OEM plastic bottles. The 800ml capacity gives a modest reserve for coolant expansion and the visible metal casing makes visual checks easy.

• Better heat resistance than many plastic reservoirs.
• Robust, lightweight construction that stands up to engine-bay vibration.
• Clear installation footprint with common hose sizing for compatibility.
• Vent hole and O-ring help manage pressure and reduce leakage risk.

Who is this for: the EVIL ENERGY 800ml aluminum coolant overflow tank is suited to DIY enthusiasts, mechanics upgrading worn or cracked plastic reservoirs, and owners of modified or older vehicles seeking a compact, durable alternative. If you have limited space but need a reliable overflow bottle with improved heat tolerance and straightforward installation, this universal aluminum option is a practical choice.