Chevrolet Silverado HD Upper Coolant Pipe - Wehrli - Semi-Gloss Black - '17-'19. This aluminum upgrade replaces the factory rubber upper coolant hose on 2017–2019 L5P Duramax trucks for a rugged, long-lasting connection.

Built by Wehrli, this precision-formed aluminum pipe features a durable semi-gloss black powder coat. Designed for the OEM GM radiator, it directly replaces GM PN 84094878. The kit includes high-temp silicone boots and stainless T-bolt clamps for secure, serviceable connections. Swapping from rubber to aluminum helps resist swelling and heat fatigue for consistent coolant flow. Note: aftermarket radiators may cause fitment issues.

Features

• Fits 2017–2019 Chevrolet Silverado HD with L5P Duramax
• Direct replacement for GM PN 84094878
• Aluminum construction with semi-gloss black powder coat
• Includes silicone boots and stainless T-bolt clamps
• For OEM GM radiator; aftermarket radiators may affect fitment

Have questions about compatibility or install? Call our teams in Austin, TX or the Los Angeles, CA area—we offer installation and customization at both locations: 512-982-9393 (TX), 562-981-6800 (CA). If you’re considering multiple items, contact us for shipping discounts. We install on premises at both locations.

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