Wehrli WCF100433-GB OEM-Placement Coolant Tank - L5P Duramax 17-19 (Gloss Black)

Vehicle Fitment

• 2017-2019 Chevrolet / GMC 2500HD & 3500HD with 6.6L L5P Duramax
• 2019+ L5D Duramax models (4500 / 5500 / 6500), where applicable

Features

• Fabricated aluminum coolant reservoir - replaces OEM plastic tank
• Gloss Black powder-coated finish (GB) for clean styling and durability
• Includes low coolant level float sensor (serviceable)
• Built-in sight glass for quick coolant level check
• CNC-machined billet aluminum cap for reliability and style
• Mounts in the OEM location using factory mounting points
• Overflow hose included for correct coolant routing
• Comes with all required mounting hardware for installation

Specifications

• Part Number: **WCF100433-GB**
• Material: Aluminum (fabricated)
• Finish: Gloss Black Powder Coat
• Sensor: Float-type low coolant level sensor
• Included Hardware: Mounting bracket, hose, cap, sight glass

Included Components

• 1 x Aluminum coolant tank / reservoir
• 1 x Float-type low-coolant-level sensor
• 1 x CNC billet aluminum cap
• 1 x Overflow hose
• 1 x Sight glass / level window
• Installation hardware (brackets, bolts)

Product Description

The **Wehrli WCF100433-GB** is a premium replacement coolant tank for 2017-2019 L5P Duramax trucks (and some L5D models). Fabricated from aluminum for strength and longevity, it replaces the OEM plastic reservoir with a more durable, metal unit that also improves engine bay aesthetics.

Finished in gloss black, this tank comes with a float-style coolant sensor, a sight glass for easy fluid level checks, and a billet aluminum cap. It installs using factory mounting points, making the swap clean and straightforward. Ideal for die-hard Duramax owners who want reliability and a clean look under the hood.