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The Wehrli upper coolant pipe for 2020–2024 L5P Duramax applications (PMB-4117, Baby Blue Sparkle) is a vehicle-specific replacement pipe for the upper coolant circuit. Offered in a distinctive finish, this part is presented as a direct-fit component for L5P-equipped trucks to restore or refresh the upper coolant plumbing during repairs or performance-oriented engine work.
Wehrli 20-24 L5P Duramax Upper Coolant Pipe - Ron B
