Wehrli WCF100224-RED Auxiliary Coolant Tank for 2020-2026 GM 6.6L L5P Duramax

Vehicle Fitment

• 2020-2026 Chevrolet Silverado 2500 HD/3500 HD (6.6L V8 L5P Duramax, 2WD/4WD)
• 2020-2026 GMC Sierra 2500 HD/3500 HD (6.6L V8 L5P Duramax, 2WD/4WD)

Fitment Notes

• Designed for trucks equipped with the 6.6L L5P Duramax diesel engine.
• Fits the factory fuel-cooler auxiliary coolant reservoir location using OEM mounting points.
• Direct-fit replacement for GM OE part number 84211275.
• Drivetrain-specific exclusion is not identified; the tank is mounted independently of the drivetrain configuration.

Features

• Fabricated aluminum auxiliary coolant tank for the fuel cooler.
• Replaces the factory clear plastic auxiliary coolant reservoir.
• OEM-location mounting for direct-fit installation.
• Uses existing OEM mounting points.
• Black anodized CNC-machined billet aluminum cap.
• Overflow flow fitting included.
• Preformed hose included for proper coolant-system routing.
• WCFab Red custom powder-coated finish.
• Designed for stock trucks without additional vehicle modifications.
• Can be installed using basic hand tools.

Specifications

• Brand: Wehrli Custom Fabrication
• Part Number: WCF100224-RED
• Product Type: Auxiliary Coolant Tank Kit
• Application: Fuel Cooler Cooling System
• Material: Fabricated Aluminum
• Finish: WCFab Red Powder Coat
• Cap: Black Anodized CNC-Machined Billet Aluminum
• Mounting Position: OEM Factory Location
• Replacement OE Part Number: GM 84211275
• Engine Compatibility: 6.6L V8 L5P Duramax Diesel

Included Components

• 1x Fabricated Aluminum Auxiliary Coolant Tank
• 1x Black Anodized Billet Aluminum Cap
• 1x Overflow Fitting
• 1x Preformed Hose
• 1x Mounting Hardware Set

Product Description

The Wehrli Custom Fabrication WCF100224-RED Auxiliary Coolant Tank is a fabricated aluminum replacement for the factory auxiliary coolant reservoir used with the fuel-cooling system on 2020-2026 Chevrolet Silverado 2500 HD and 3500 HD and GMC Sierra 2500 HD and 3500 HD trucks equipped with the 6.6L L5P Duramax diesel. The tank replaces the factory clear plastic reservoir while retaining the OEM mounting location and mounting points.

This WCFab Red version combines functional replacement with a durable custom powder-coated finish. The kit includes a black anodized CNC-machined billet aluminum cap, overflow fitting, preformed hose, and mounting hardware. It is designed to fit stock trucks without additional modifications and can be installed using basic hand tools, making it suitable for owners looking to replace the factory reservoir while upgrading the appearance and construction of the engine compartment.