Radium Engineering Coolant Expansion Tank Kit for Ford Mustang GT S550 FM/FN 2015-2022

Radium Coolant Expansion Tank Kit - Ford Mustang GT S550 FM/FN 15-22

Application: Ford Mustang S550 (2015-2023) incl. Shelby GT350 and Shelby GT500
Part Type: Billet aluminium coolant expansion tank kit
Part Number: 20-0286

The Radium Coolant Tank Kit replaces the factory plastic coolant expansion tank at the front of the engine bay with a CNC-machined billet aluminium header tank, made from two halves bolted together. Its low-profile design frees up engine bay space for forced induction or other modifications.

Inside, the two chambers are linked by cross-over passages at the top and bottom, and an internal swirl feature helps de-aerate the cooling system. The kit includes all the parts needed for installation and no permanent vehicle modifications are required.

Key Features

• CNC-Machined Billet Aluminium: Two-piece tank bolted together
• Low Profile: Frees up engine bay space for forced induction or other modifications
• Swirl De-Aeration: Internal swirl feature helps remove air from the cooling system
• Interconnected Chambers: Cross-over passages at the top and bottom
• Complete Kit: All parts needed for installation are included
• No Permanent Modifications: Replaces the OEM plastic tank at the front of the engine bay

What's Included

• Billet aluminium coolant tank
• Anodised aluminium mounting bracket
• Stainless steel hardware
• Adapter fittings
• Replacement heater hose
• Overflow hose, 7/32"

Important Notes

• The OEM pressure cap cannot be reused – Radium pressure caps are sold separately and not included
• OEM pressure rating for the S550 Mustang, Shelby GT350 and Shelby GT500 is 1.45 bar (21 psi)
• Radium's optional high-pressure caps raise the system boiling point for improved cooling in extreme track use
• Installation instructions are available in the Instructions tab

Vehicle Fitment

• Ford Mustang S550 (2015-2023) – GT, EcoBoost and V6
• Ford Shelby GT350 S550
• Ford Shelby GT500 S550

If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.

Installation

We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.

Note

Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.