Wehrli Custom Fabrication WCF100542-DG OEM Placement Fabricated Aluminum Coolant Tank Kit - Dark Grey

The Wehrli Custom Fabrication WCF100542-DG is a fabricated aluminum coolant tank kit designed to mount in the factory OEM location, replacing the aging, yellowed plastic coolant reservoir with a durable, custom powder-coated upgrade finished in Dark Grey. Built by WCFab for the 2004.5–2007 5.9L Cummins diesel platform, this kit delivers both functional reliability and a clean, custom look under the hood.

The tank installs using the factory mounting points and requires no additional modifications, making it compatible with stock trucks right out of the box. Installation is straightforward with basic hand tools. Replaces MOPAR part numbers 55056493AA and 55056493AB.

Kit Includes:

• Fabricated aluminum coolant tank with custom Dark Grey powder coat finish
• Black anodized CNC machined billet aluminum cap
• Installation hardware

Key Features:

• Custom powder-coated fabricated aluminum construction for long-lasting durability
• Mounts in OEM coolant tank location — no modifications required
• Uses factory OEM mounting points for a secure, direct-fit installation
• Installs with basic hand tools
• Replaces OEM plastic reservoir for improved under-hood appearance
• Made in USA by Wehrli Custom Fabrication

Upgrade your engine bay with the confidence of WCFab quality — the same craftsmanship trusted by diesel enthusiasts and performance builders across the country.