What material is this filler neck made from?

This filler neck is constructed from aluminum. This material is chosen for its durability compared to the original plastic filler neck found on many vehicles.

Will this filler neck fit my specific Evolution X model?

This filler neck is designed to fit the 2008 through 2015 model years of the Mitsubishi Evolution X. It is intended as a direct replacement for the factory part.

What are the benefits of an aluminum filler neck over a plastic one?

Aluminum filler necks are generally more resistant to cracking and degradation from heat and age compared to plastic. This can lead to a more reliable seal for your cooling system and help prevent coolant leaks.

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Specifications

Brand: Koyo
Part #: FN2316
UPC: 847839020423

Koyo 08-15 Mitsubishi Evolution X Aluminum Filler Neck

Name: Koyo 08-15 Mitsubishi Evolution X Aluminum Filler Neck
Brand: Koyo
SKU: koyo-koyo-08-15-mitsubishi-evolution-x-aluminum-filler-neck-t14-798813
Price: 79.21 USD
Availability: BackOrder

$79.21

On Backorder — Expected to ship by Apr 19, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Koyo 08-15 Mitsubishi Evolution X Aluminum Filler Neck. This aluminum neck is a direct replacement for the stock plastic part.

Key Features

Fits 2008-2015 Mitsubishi Evolution X.
Constructed from aluminum for improved durability over the stock plastic part.
Designed as a direct replacement for the original coolant filler neck.
Helps prevent coolant leaks caused by brittle or cracked plastic components.

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About this part

Product Details

Crafted from aluminum, this filler neck is built to replace the original plastic component on your 2008-2015 Mitsubishi Evolution X. The stock plastic filler neck can become brittle over time, leading to cracks and coolant leaks. This aluminum version offers a more durable solution, helping to ensure your cooling system stays sealed and functions as it should.

Replacing the stock filler neck with this aluminum part is a straightforward process, often requiring basic hand tools. Its design aims for a direct fit, meaning it should bolt up to your existing coolant lines and radiator without modification. This makes it a practical choice for anyone looking to address a failing stock part or proactively upgrade to a more robust component for their Evo X.