2015-2015 Duramax LML HSP Factory Replacement Coolant Tank (527-2-HSP)

The HSP Upper Coolant Tube is a premium upgrade for the 2015-2016 LML Duramax-equipped Chevrolet and GMC trucks. This often-overlooked component is both functional and aesthetic — a simple replacement that adds durability and style to your engine bay.

Why Upgrade to the HSP Upper Coolant Tube?
The factory rubber upper coolant hose is prone to cracking, leaking, and early failure — especially in high-heat conditions. It's also an eyesore that clashes with an otherwise clean engine bay. The HSP Upper Coolant Tube eliminates those weak points while giving your truck a sharp, finished look.

What Makes the HSP Upper Coolant Tube Different?
HSPs version is crafted from durable aluminum to eliminate the cracking issues found in OEM rubber hoses. Designed with gentle mandrel bends and finished in your choice of powder coat colors, this drop-in replacement maintains factory fitment while improving reliability and appearance. The engraved HSP Diesel logo adds a bold detail front-and-center in the engine bay.