Wehrli · New
Wehrli 17-19 Chevrolet 6.6L L5P Duramax OEM Placement Coolant Tank Kit - Illusion Blueberry
MPN WCF100433-IBB · Store SKU wcfWCF100433-IBB
Supplier stock checked 11/7/2026, 6:28:03 AM UTC. Adding a part does not reserve it.
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Product details
The WCFab 2017-2019 L5P Duramax 2500 / 3500 & 2019+ L5D Duramax 4500 / 5500 / 6500 Fabricated Aluminum Coolant Tank Kit, mounts in OEM coolant tank location. The stock coolant reservoirs on these trucks are known to become cloudy and yellow with age becoming an eyesore when you're cleaning up the rest of your engine bay. More importantly, the stock units are notorious for the non-replaceable sensors that tend to fail prematurely causing a false low coolant warning. To fix the light on your dash using stock parts, you'll need to purchase and install a whole new coolant reservoir assembly...every time the sensor has an issue. To help clean up the under hood appearance of your truck and address this known failure point, our custom fabricated aluminum tanks include a high quality, cost effective float-type sensor that is easily serviceable for the life of your vehicle. - - Replaces the following GM Part Numbers: 84257137, 84214124, 84138913, 84257137, 84174037 Wehrli Custom Fab Coolant Tank, OEM Placement, for 17-19 Duramax L5P, Illusion Blueberry Coolant Tank, OEM Placement, for 17-19 Duramax L5P, Illusion Blueberry
Manufacturer fitment & guides
Check WCF100433-IBB against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
