EVIL ENERGY Coolant Overflow Tank 800ml Aluminum Universal Black — Sealed O-Ring, 5/16" Hose

The EVIL ENERGY 800ml aluminum coolant overflow tank is a compact, universal replacement radiator bottle designed to capture excess coolant, resist heat, and prevent leaks in most cars.

This precision-machined overflow reservoir pairs durable aluminum construction with a sealed O-ring cap and an integrated ventilation hole to manage pressure and temperature under the hood. At 800ml capacity and a slim profile, it fits many engine bays where space is limited. The unit ships with installation instructions and a pre-fitted NBR hose sized to 5/16" inner diameter.

How does this overflow tank fit my vehicle?

The EVIL ENERGY tank was made to be broadly compatible with passenger vehicles but requires sufficient mounting clearance. Check the measurements against the location where your original reservoir sits or where you plan to mount this bottle.

• Overall length: 7.48 inches (19 cm) for tight spaces
• Bottom diameter: 2.95 inches (7.5 cm) for compact footprint
• Cap diameter: 1.96 inches (5 cm) for standard hose connections
• Hose inner diameter: 5/16" for direct fit with common radiator lines

What materials and features improve durability?

This reservoir combines light, corrosion-resistant aluminum with automotive-grade NBR hose and a precision O-ring seal to reduce the chance of leaks and long-term degradation. A tiny ventilation port helps equalize pressure and encourages heat dissipation from the cap area.

• Aluminum alloy body resists rust and warping
• NBR (nitrile) hose resists coolant and oil exposure
• O-ring cap for a secure, low-leak seal
• 1/16" vent hole near the cap for thermal venting

How do I install and position the bottle safely?

Installation is intended to be vertical and away from direct heat sources like exhaust manifolds and turbo housings. The product includes basic installation instructions; ensure hose routing avoids sharp edges and extreme heat to maximize life and safety.

• Mount vertically for proper overflow flow and drainage
• Keep at safe distance from high-temperature components
• Secure hose with clamps and avoid kinking
• Follow supplied instructions for correct sealing and placement

What capacity and connection specifics should I expect?

The reservoir holds 800ml—suitable as an overflow/expansion bottle—and uses a 5/16" ID hose for common radiator setups. Its compact cap and diameter make it a good option when replacing small or damaged OEM overflow tanks.

• Volume: 800 milliliters for typical overflow needs
• Hose ID: 5/16" to match common radiator fittings
• Compact cap and body to fit constrained engine bays
• Designed for straightforward retrofit applications

Who is this for? Automotive enthusiasts, DIY mechanics, and anyone needing a reliable, compact replacement overflow bottle will find this EVIL ENERGY aluminum tank useful. It’s ideal for cars with limited engine-bay space, custom builds, or when upgrading from brittle plastic reservoirs. Ensure the listed dimensions suit your mounting location before purchasing, and keep the tank clear of extreme heat for best performance.