Wehrli Custom Fabrication WCF100848-DG 2025-2026 6.7L Cummins OEM Placement Fabricated Aluminum Coolant Tank Kit - Dark Grey

The Wehrli Custom Fabrication WCF100848-DG is a fabricated aluminum coolant tank kit designed to replace the factory clear plastic coolant reservoir on 2025–2026 6.7L Cummins-powered trucks. Finished in a Dark Grey powder coat, this direct-fit upgrade mounts in the OEM coolant tank location using factory mounting points — no modifications required.

Built from high-quality welded fabricated aluminum, the tank adds a custom, high-performance look to the engine bay while delivering superior durability over the stock plastic unit. A built-in coolant level sight glass allows for quick visual coolant level checks without removing the cap, and the included low coolant level sensor retains full OEM warning functionality.

Kit Includes:

• Fabricated aluminum coolant tank with Dark Grey powder coat finish
• Low coolant level sensor
• Black anodized CNC-machined billet aluminum cap
• Coolant level sight glass
• Overflow hose
• Installation hardware

Key Features:

• Direct OEM-location replacement — mounts on factory mounting points
• Fits stock trucks with no additional modifications necessary
• Installs with basic hand tools
• Durable fabricated aluminum construction over stock plastic reservoir
• Custom Dark Grey powder coat finish for a clean, finished engine bay appearance
• Made in the USA by Wehrli Custom Fabrication

WCFab coolant tank kits are a popular engine bay upgrade for performance diesel enthusiasts seeking both function and aesthetics. The WCF100848-DG is the Dark Grey color variant of the WCF100848 base kit.