155mm Water Cooling Reservoir Tank for Motorcycle and PC DIY Cooling Projects

This water tank reservoir serves as a central component for managing coolant in liquid cooling systems. With a 155mm length and 50mm diameter, it provides a specific volume for expansion and air bleeding, crucial for maintaining efficient thermal transfer in both electric motorcycle engines and high-performance computer setups. The unit is constructed from a blend of POM, acrylic, and other engineering plastics, materials chosen for their resilience against common coolants and their ability to withstand the operational environment of cooling loops. Available in red, green, blue, or white, it offers aesthetic flexibility, while an optional integrated LED light version adds a practical feature for at-a-glance liquid level checks, helping to prevent dry running in pumps.

Features and Construction

The reservoir's design focuses on reliable performance in closed-loop liquid cooling applications. Its specifications and material composition are directly aimed at providing a durable and functional point for coolant filling, bleeding, and expansion.

Material and Build

The tank utilises a combination of POM (Polyoxymethylene), acrylic, and engineering plastics. POM contributes high stiffness, low friction, and good dimensional stability, which is beneficial for threaded fittings and connections. Acrylic sections, where applicable, offer transparency for visual monitoring of coolant levels and condition. The overall engineering plastic blend is selected to resist degradation from water-based coolants and glycol mixes typically used in motorcycle and computer cooling, ensuring long-term material integrity without cracking or clouding under normal use conditions.

Size and Practical Fit

With a fixed length of 155mm and a diameter of 50mm, this reservoir has a defined volumetric capacity. This size makes it suitable for integration into various spaces, such as within a computer case chassis or the designated bays of an electric motorcycle frame. The dimensions determine how much excess coolant and air the system can hold, which is a key factor in stabilising pressure and ensuring a consistent flow to the radiator and water blocks. Its cylindrical shape is a common form factor that simplifies mounting in different orientations.

Uses and Placement

This product is explicitly designed for liquid cooling applications across different fields. Its versatility stems from its standardised fittings and material compatibility rather than invented multi-purpose features.

Event or Professional Use

For professional or enthusiast-level applications, such as custom gaming PC builds or performance electric motorcycle tuning, this reservoir acts as a centralised filling and bleeding port. In a computer water cooling loop, it is typically installed in-line before the pump to ensure a steady, bubble-free coolant supply. For electric motorcycles, it can be integrated into the cooling circuit for the battery pack, motor, or controller, providing an accessible point for maintenance and system bleeding, which is critical for optimal thermal management during extended use.

Everyday Home Use

For the home DIY enthusiast building a quiet, efficient PC or working on personal electric vehicle projects, this reservoir simplifies the process of filling and maintaining a custom cooling loop. Its optional LED light version provides a clear, immediate visual cue for coolant level during everyday operation, allowing users to quickly check the system's status without disassembly. The choice of colour (red, green, blue, or white) lets users match the reservoir to their existing build theme or lighting scheme.

Benefits and Buying Value

The value of this component lies in its role as a dedicated, purpose-built part for liquid cooling systems, constructed from materials suited to the task.

Reuse and Low Maintenance

Constructed from durable plastics, the reservoir is designed for repeated use within a cooling system over its lifespan. Proper maintenance, as indicated by the source instruction to avoid alcohol-based liquids and harsh scrubbing, involves using compatible coolants and gentle cleaning, which supports long-term reuse. The design negates the need for frequent replacement if used within its intended parameters, representing a one-time installation for the life of the cooling loop.

Why Choose This Product

This water tank reservoir offers a concrete solution for a specific need: managing coolant in a DIY or vehicle cooling system. Its defined 155mm length and 50mm diameter provide known dimensions for planning a build. The material mix of POM and acrylic is a practical choice for fluid contact, and the availability of an LED-lit version addresses a functional need for monitoring. When compared generically to not having a dedicated reservoir or using incompatible containers, it provides a safer, more reliable, and more integrated method for handling coolant expansion and air in a pressurised loop.