2011-2016 Duramax LML Upper Coolant Tube - HSP Diesel

The HSP Upper Coolant Tube is a premium upgrade for 2011-2016 LML Duramax-equipped Chevrolet and GMC Diesel trucks. This often-overlooked component improves durability and brings a cleaner, more custom look to your engine bay.
 
Why Upgrade the Upper Coolant Tube?
The OEM upper coolant tube is made of rubber ” a material that can crack over time, especially under high heat and pressure. This leads to cooling system failure and a cluttered engine bay appearance. The HSP Upper Coolant Tube resolves both of those issues in one upgrade.
 
What Sets the HSP Tube Apart?
Crafted from aluminum, the HSP Upper Coolant Tube offers superior strength, eliminates rubber cracking risks, and delivers better aesthetics. Designed with gentle bends to match factory routing, this powder-coated tube includes the signature HSP Diesel logo front and center. It's a direct-fit replacement with upgraded components that improve both flow and reliability.
 
Whats Included:
1x LML Radiator Hose Tube w/Logo
1x 1 3/4" Worm Gear Clamp (RFB-408-RFAB)
1x 1.75" 90degree Boot - Rubber (RFB-433-RFAB)
1x 1.75"x3" Straight Boot - Rubber (RFB-437-RFAB)