Vehicle-Specific Fitment: This upper coolant pipe kit is compatible with 2017-2019 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD models equipped with the 6.6L L5P Duramax diesel engine. Reference OE part number: 84094878
Upper Radiator Hose Replacement: Our aluminum upper coolant pipe replaces the factory upper radiator pipe while following the original routing path for direct-fit installation. No cutting or modification is needed.
Everything Needed to Connect: This kit includes a aluminum pipe, 5-ply silicone couplers, and T-bolt clamps to form a complete upper coolant connection system.
Cleaner Engine Bay Upgrade: This upper coolant pipe kit replaces the factory rubber hose with a clean aluminum pipe setup, delivering a more refined and performance-inspired engine bay look. Perfect for Duramax owners seeking a cleaner under-hood appearance.
Built for Real Use: This coolant hose upgrade is designed for demanding driving, engine bay builds, and long-term ownership where a secure upper radiator hose connection matters. It delivers a durable upper cooling solution for Duramax-equipped vehicles for everyday use.
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