Mishimoto Accessories / 42mm Aluminum CNC Fill Neck

Part #: MMFN-L

Overview

The Mishimoto 42mm Aluminum CNC Fill Neck is a high-quality, precision-engineered component designed to enhance your vehicle's cooling system. Crafted from durable aluminum with CNC machining, this fill neck provides a reliable and stylish upgrade for automotive enthusiasts seeking improved coolant reservoir access and a clean, professional appearance. Suitable for a wide range of vehicles, it is ideal for those looking to support a robust cooling setup, whether for daily driving, track use, or custom builds. Its lightweight construction and corrosion-resistant finish ensure long-lasting performance and a sleek aesthetic that complements any engine bay.

Key Features

This fill neck combines precision manufacturing with functional design to deliver a superior upgrade. Key features include:

• Constructed from high-grade aluminum for strength and durability
• Precision CNC machined for a perfect fit and finish
• 42mm diameter opening for easy filling and refilling
• Corrosion-resistant anodized finish for long-term durability
• Lightweight design to minimize added weight in the engine bay
• Universal fitment suitable for various cooling system configurations
• Supports a clean, professional look in custom or stock engine bays

Construction & Design

The fill neck is crafted from high-quality aluminum with CNC machining to ensure precise dimensions and a smooth surface finish. Its robust construction provides resistance to heat and corrosion, making it suitable for demanding automotive environments. The anodized coating not only enhances durability but also adds a sleek, matte appearance that complements various engine bay styles.

Installation & Fitment

Designed for straightforward installation, this fill neck replaces or upgrades existing coolant reservoir fill points. It requires basic tools and minimal modification, making it accessible for both professional technicians and DIY enthusiasts. Compatibility should be verified with your specific vehicle's cooling system to ensure proper fitment.

What’s Included

The package includes the CNC-machined aluminum fill neck and necessary hardware for installation, providing everything needed for a secure and reliable upgrade.