Nuke Performance Coolant Expansion Tank, 1.5L - 455-01-202

The Nuke Performance Coolant Expansion Tank, 1.5L is a lightweight, single-chamber aluminum expansion tank engineered for reliable coolant management in pressurized cooling systems. Designed for demanding street and motorsport applications, this coolant expansion tank combines durable welded construction, controlled inlet flow, Type-A radiator cap compatibility, and straightforward installation.

Key Features

• Lightweight single-chamber aluminum coolant expansion tank
• 1.5-liter internal capacity
• Type-A radiator cap compatibility
• 32mm radiator neck for standard mini Type-A radiator caps
• AN-8 ORB inlet port
• AN-10 ORB outlet port
• Side-mounted inlet designed for controlled vortex coolant flow
• Bottom-mounted AN-10 ORB main outlet
• Designed for pressurized cooling systems
• Built for consistent performance under heat and pressure
• Integrated aluminum mounting bracket
• 1/16 NPT overflow port
• 1/16 NPT to 6mm barb fitting included
• Designed and developed in Sweden
• Suitable for demanding motorsport applications

Fitment / Application

The Nuke Performance Coolant Expansion Tank, 1.5L is designed for pressurized automotive cooling systems rather than functioning as a conventional overflow tank. Its single-chamber design provides a straightforward solution for applications requiring reliable coolant expansion, circulation, and air separation.

This tank is suitable for street and motorsport applications, with the supplied specifications identifying the product as for motorsports use only. It is intended to be integrated directly into the vehicle's pressurized cooling system and can be used across a wide range of custom and performance cooling-system installations where its 1.5-liter capacity, AN-8 ORB inlet, AN-10 ORB outlet, 32mm Type-A radiator cap connection, dimensions, and pressure compatibility meet the application requirements.

Important: Vehicle-specific fitment is not provided in the supplied manufacturer information. Confirm the available installation space, mounting location, hose routing, fitting requirements, radiator cap requirements, and cooling-system pressure specifications before installation.

Single-Chamber Design with Controlled Vortex Inlet Flow

The Nuke Performance 1.5L Coolant Expansion Tank uses a simplified single-chamber internal design engineered for stable coolant management in pressurized cooling systems.

Incoming coolant enters through the side-mounted AN-8 ORB inlet, creating a controlled swirling motion inside the tank. This controlled vortex flow supports consistent coolant circulation and natural air separation within the expansion tank.

The single-chamber construction provides a robust and lightweight solution for demanding cooling-system applications while maintaining predictable coolant movement and stable system behavior.

AN-8 ORB Inlet and AN-10 ORB Outlet

The expansion tank features an AN-8 ORB inlet port positioned in the upper section of the tank. The side-mounted inlet introduces incoming hot coolant with a controlled swirl to support consistent circulation and natural air separation.

A single AN-10 ORB outlet is integrated into the bottom of the tank and serves as the main coolant outlet. This configuration provides a straightforward installation layout while supporting stable coolant circulation through the pressurized cooling system.

The ORB configuration allows the tank to accommodate a wide range of compatible AN fittings and adapters for different installation requirements.

Type-A Radiator Cap Compatibility

The coolant expansion tank features a 32mm radiator neck designed for standard mini Type-A radiator caps.

Type-A radiator cap compatibility allows the expansion tank to be paired with higher-rated radiator caps for applications requiring increased cooling-system pressure and operating temperatures. Available pressure ratings include:

• Type-A Radiator Cap, 1.1 BAR (16.0 PSI), Part # 452-01-011
• Type-A Radiator Cap, 1.3 BAR (18.9 PSI), Part # 452-01-013
• Type-A Radiator Cap, 1.5 BAR (21.8 PSI), Part # 452-01-015
• Type-A Radiator Cap, 2.0 BAR (29.0 PSI), Part # 452-01-020

The stated radiator cap pressure rating represents the nominal release pressure and operates within a defined tolerance range.

Cooling-system pressure directly affects coolant boiling point. Always select the lowest-pressure radiator cap that provides sufficient boiling margin for the application. Higher pressure can increase thermal stability, but it also places greater stress on cooling-system components.

Designed for Pressurized Cooling Systems

The Nuke Performance Coolant Expansion Tank, 1.5L is engineered as an integrated component of a pressurized cooling system, not as a simple overflow reservoir.

Its simplified internal construction is designed to provide stable coolant movement and predictable system behavior under heat and pressure. The single-chamber design, controlled vortex inlet flow, and bottom-mounted outlet work together to provide reliable coolant management across demanding applications.

For more advanced cooling-system requirements, Nuke Performance also offers a 0.8L Performance version with additional engineering features.

Swedish Engineering and Construction

Designed and developed in Sweden, the Nuke Performance Coolant Expansion Tank range is engineered in-house with a focus on function, fit, durability, and performance.

The 1.0L and 1.5L expansion tanks feature a straightforward single-chamber design, controlled inlet flow, and durable welded construction. The result is a lightweight and reliable solution designed to perform in demanding street and motorsport environments.

There is no substitute for the quality of Nuke Performance.

Coolant Expansion Tank, 1.5L Specifications

For additional technical information, refer to the Nuke Performance product manual.

Included

• 1 x Coolant Expansion Tank, 1.5L capacity
• 1 x 1/16 NPT barb fitting to 6mm hose
• 1 x Integrated aluminum mounting bracket