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HSP Diesel Upper Coolant Tube For 11-14 6.6L Duramax

Availability: This item is made to order, potential lead times of 15-18 business days may occur
Pricing: $142.50

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The HSP Diesel Upper Coolant Tube is a top-of-the-line aftermarket upgrade specifically designed for 2011-2014 Chevrolet and GMC Duramax LML trucks. This high-quality coolant tube offers superior performance and durability compared to the stock component, ensuring reliable cooling system functionality in various conditions. Constructed from premium materials, the tube can withstand extreme temperatures and challenging environments, providing long-lasting service life. Its precise engineering ensures a perfect fit, enabling easy installation without any modifications. By installing the HSP Diesel Upper Coolant Tube, users can experience improved coolant flow and enhanced cooling efficiency, contributing to the optimal performance of their Duramax LML trucks.


  • Aluminum construction
  • High strength boots
  • No possibility of cracking rubber tube
  • Powder coating options to dress up the engine bay
  • Drop-in replacement


Available Colors:

  • Please message us with your powder coat color and exact year/make/model of your vehicle after purchase. Please note that your order will not be processed until we have this information.
  • Ink Black
  • Illusion Blueberry
  • Illusion Purple
  • Illusion Cherry
  • Flag Red
  • Kingsport Grey
  • M&M Orange
  • Silk Satin Black
  • Custom Color (+$50 charge)



  • (1) Aluminum HSP Upper Coolant Tube
  • (1) 1.75" x 3" Straight Boot
  • (1) 1.75" 90° Boot
  • (4) 1 3/4" Worm Gear Clamps



  • 2011-2014 GMC Chevy 6.6L LML Duramax Diesel



  • Limited Lifetime Warranty


  • 537-1-HSP-X
  • 537-1-HSP-X
  • HSP Diesel
  • This item is made to order, potential lead times of 15-18 business days may occur
  • New

Shipping Information

  • Item Requires Shipping
  • 10.0 lbs.
  • W10.0000” x H10.0000” x L20.0000”
  • FREE Ground Shipping

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