GMC Sierra Upper Coolant Pipe - Wehrli - Fabricated Aluminum - Candy Red - ‘20–‘25. Upgrade the factory rubber upper radiator hose on your 2020–2025 L5P 6.6L Duramax Sierra 2500/3500 with a precision-fabricated aluminum hard pipe finished in Candy Red.

Built by Wehrli Custom Fab for reliability and a clean engine bay, this upper coolant pipe is designed for use with the OEM GM radiator and fits stock trucks without modification. The durable powder coat resists corrosion and heat, while high-quality silicone boots and stainless steel T-bolt clamps provide secure, leak-resistant connections. Direct replacement for GM part numbers 84813629 and 85122989. Installs with basic hand tools.

Features

• Application: 2020–2025 GMC Sierra 2500/3500, 6.6L L5P Duramax
• Fabricated aluminum with Candy Red powder coat
• For OEM GM radiator; aftermarket radiators may affect fitment
• No modifications required for stock trucks
• Includes silicone boots and stainless steel T-bolt clamps
• Cleans up engine bay appearance
• Replaces GM PN 84813629, 85122989

Questions or need guidance? Call our team. We offer installation and customization at our Austin, Texas and Los Angeles, California area locations: 512-982-9393 (TX), 562-981-6800 (CA).

If you are considering multiple items, please contact us for shipping discount options. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov