Wehrli · New
Wehrli 17-19 Chevrolet 6.6L L5P Duramax Upper Coolant Pipe - Cat Yellow
MPN WCF100742-CAT · Store SKU wcfWCF100742-CAT
Supplier stock checked 11/7/2026, 10:28:21 AM UTC. Adding a part does not reserve it.
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Product details
Aluminum Upper Coolant Pipe for 2017-2019 L5P Duramax replaces the OEM rubber upper coolant hose and comes powder coated color of choice! Replaces the following GM Part Numbers: 84094878 Wehrli Custom Fab Upper Coolant Pipe, for 2017-2019 Duramax L5P, Cat Yellow Upper Coolant Pipe, for 2017-2019 Duramax L5P, Cat Yellow
Manufacturer fitment & guides
Check WCF100742-CAT against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y