GMC Sierra 3500 Upper Coolant Pipe - Wehrli - Fine Texture Black - 20-25. This fabricated aluminum pipe replaces the factory rubber upper radiator hose on L5P 6.6L Duramax trucks, finished in Fine Texture Black for a clean, durable look.

Built for 2020–2025 Chevrolet Silverado and GMC Sierra 2500/3500 with the L5P, this hard pipe is a direct fit for stock trucks and pairs with the OEM GM radiator; aftermarket radiators may cause fitment issues. The powder coat resists wear and tidies the engine bay. The kit includes silicone boots and stainless steel T-bolt clamps, and installs with basic hand tools. Replaces GM part numbers 84813629 and 85122989.

Features

• 2020–2025 L5P 6.6L Silverado/Sierra 2500/3500 fitment
• Fabricated aluminum hard pipe, Fine Texture Black
• Direct fit with OEM GM radiator; no vehicle modifications
• Includes silicone boots and stainless T-bolt clamps
• Installs with basic hand tools; replaces GM 84813629, 85122989

Questions or fitment checks? Call our team. We have locations in Austin, Texas and the Los Angeles, California area offering professional installation and customization services. Texas: 512-982-9393. California: 562-981-6800.

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

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