EVIL ENERGY Coolant Overflow Tank — 800ml Aluminium Radiator Overflow Bottle, Black Universal Fit

EVIL ENERGY's 800ml aluminum coolant overflow tank is a compact, universal-fit radiator expansion bottle designed to collect excess coolant and resist heat and corrosion in a sleek black finish.

This lightweight replacement overflow reservoir is built from anodized aluminum and supplied with a rubber hose and sealing O-ring, offering a durable alternative to factory plastic bottles. Its compact footprint and 5/16" hose inlet make it compatible with a wide range of passenger cars and performance builds — just confirm there’s enough clearance in your engine bay before fitting. The cap includes a small venting hole to manage pressure changes and help dissipate heat while the sealed O-ring minimizes drips and weeping.

How will this overflow tank fit my vehicle?

The EVIL ENERGY bottle is a universal-style part intended to work in many cars, trucks and custom projects. Check available installation space and hose routing in your engine bay to ensure the tank can be mounted vertically and kept away from extreme heat sources.

• Dimensions: length 7.48 inches, bottom diameter 2.95 inches, cap diameter 1.96 inches.
• Volume: 800 ml capacity for typical coolant expansion needs.
• Hose connection: 5/16 inch inner diameter fitting accepts common coolant hoses.
• Mounting: designed for vertical installation; include basic hardware and instructions.

Is the construction durable and heat-resistant?

The reservoir is machined from aluminum alloy and finished in black to improve corrosion resistance versus untreated metals. The included rubber hose and O-ring provide a sealed connection that reduces leakage risk under normal operating temperatures.

• Material: lightweight aluminum alloy body for strength and longevity.
• Sealing: O-ring at the cap reduces seepage and helps contain coolant.
• Vent: a 1/16" hole in the cap aids pressure equalization and heat dispersion.
• Accessory: rubber hose supplied for a straightforward hookup to a 5/16" fitting.

How simple is the installation and maintenance?

Installation is designed to be straightforward for DIYers and professional mechanics alike; the package includes basic instructions. Position the bottle vertically, connect the hose to your radiator or overflow line, and secure the bracket in a spot with room to breathe and away from exhaust or turbo heat.

• Instructions: included step-by-step guide for mounting and hose routing.
• Orientation: must be mounted upright for correct overflow operation.
• Clearance: keep distance from high-temperature components to protect the rubber hose.
• Maintenance: periodic inspection of hose and O-ring recommended for leak prevention.

Who is this best suited for?

This EVIL ENERGY aluminum overflow bottle is ideal for car owners upgrading tired plastic expansion tanks, custom-builders fitting aftermarket cooling systems, or anyone seeking a compact, corrosion-resistant alternative. It suits daily drivers, track cars, and restored classics where a reliable overflow reservoir and an attractive engine-bay appearance are desired. Confirm fitment and mounting space before purchase to ensure a clean installation.