1.5L Aluminium Header Tank – Universal Coolant Expansion Reservoir Horizontal

Custom configurations available on request

This 1.5L horizontal aluminium header tank is a fully pressurised cooling system component designed for applications where vertical space is limited. The low-profile configuration makes it ideal for engine swaps, kit cars and custom builds requiring a compact header tank layout while maintaining proper coolant expansion and air separation.

Please note: this item may currently be made to order. Typical dispatch time is around 5 working days, though stock availability is updated regularly.

Installed as the highest fill and bleed point within the coolant circuit, this TIG welded aluminium header tank manages thermal expansion and maintains stable system pressure under sustained load. It forms part of the primary cooling system and is suitable for performance and motorsport use.

The horizontal design provides increased packaging flexibility compared to traditional vertical header tanks, making it particularly suited to restricted engine bays and low bonnet clearance installations.

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Specification

Length: 200mm (approx)

Diameter: 101mm (4inch)

Capacity: 1.5 litres

Orientation: Horizontal

Top port: 8 mm bleed / return

Bottom port: 19 mm outlet

Standard European-size CNC-machined filler neck (cap not included)

Mounting bracket hole centres: approx. 115 mm × 100 mm (centre-to-centre; minor variation possible due to hand-formed fabrication).

Build philosophy & quality assurance

All products are manufactured in low volume to allow proper control over fit-up, welding and finishing.

Built properly. Not quickly.