EVIL ENERGY Aluminum Radiator Overflow Tank 800ml Silver — Universal Coolant Reservoir, Corrosion-Resistant

EVIL ENERGY's 800ml aluminum radiator overflow tank is a universal silver coolant reservoir designed to replace or upgrade factory overflow bottles for most cars.

This compact, lightweight overflow bottle is engineered from aluminum alloy with a durable NBR hose and an O-ring sealed cap to reduce leaks and improve heat dissipation. With a tall, narrow profile and a clear focus on fitment flexibility, the tank works as a direct-swap in many engine bays — just confirm there’s adequate mounting space. The included ventilation hole helps relieve trapped heat while the 800ml capacity gives extra coolant reserve compared with some stock bottles.

How does this overflow tank fit different vehicles?

The EVIL ENERGY overflow tank is built to be broadly compatible with many car models thanks to its compact dimensions and 5/16" hose connection. It’s best used where there’s vertical clearance and a flat mounting surface. Always measure your engine bay before ordering to ensure proper placement and hose routing.

• Length: 7.48 inches — fits behind many bumper or inner-fender areas
• Bottom diameter: 2.95 inches — narrow footprint for tight spaces
• Cap diameter: 1.96 inches — standard access for refills
• Hose inner diameter: 5/16 inch — matches common coolant lines

What materials and construction features improve reliability?

Constructed from aluminum alloy, the EVIL ENERGY bottle resists corrosion and adds stiffness compared with plastic reservoirs. The NBR rubber hose provides oil and coolant resistance while the cap uses an O-ring seal to minimize drips. A small ventilation hole in the top helps prevent pressure build-up and assists with heat escape.

• Aluminum alloy body — durable and corrosion-resistant
• NBR hose — flexible and chemically resistant
• O-ring sealed cap — reduces chance of coolant leakage
• 1/16" ventilation hole — helps dissipate trapped heat

How difficult is installation and what should I prepare?

Installation is straightforward for anyone comfortable with basic under-hood work. The tank must be mounted vertically and positioned away from hot exhaust or turbo components. The product ships with installation instructions; you’ll typically need basic hand tools, hose clamps, and a secure bracket or mounting point.

• Install vertically to maintain proper overflow function
• Keep clear of extreme heat sources like exhausts or turbochargers
• Use standard hose clamps on the 5/16" connection for a tight seal
• Follow included instructions for correct orientation and hose routing

How much coolant does it hold and why that matters?

The reservoir holds approximately 800ml of fluid, offering a modest reserve to capture expansion and return coolant during engine warm-up and cooldown cycles. Increased capacity compared with some OEM bottles can reduce the need for frequent top-ups. However, it is still important to monitor levels and follow your vehicle manufacturer's coolant guidance.

• Capacity: 800ml — extra reserve over smaller OEM bottles
• Clear fill and cap access for easy checks and refills
• Helps manage coolant overflow during thermal cycles

Who is this for: Drivers, hobbyists, and mechanics looking to replace a worn or cracked plastic overflow bottle with a stronger aluminum option, or those upgrading for a cleaner engine-bay look and improved durability. Confirm fitment by measuring available space and hose size before purchasing; this tank is best for vehicles with a vertical mounting option and sufficient clearance from high-temperature components.