The HSP Upper Coolant Tube, specifically designed for the 2011-2014 LML Duramax Chevrolet and GMC trucks, is a frequently overlooked component that significantly enhances the engine bay’s aesthetics and functionality.

**Purpose of the HSP Upper Coolant Tube:**

The factory upper coolant tube, composed of rubber, exhibits limitations in terms of performance and aesthetics. It is prone to cracking, leading to potential coolant system failures. Additionally, its prominent placement in the engine bay disrupts the overall design.

**Key Differences of the HSP Upper Coolant Tube:**

The HSP Upper Coolant Tube is meticulously crafted from aluminum, a material that eliminates the risk of cracking and ensures reliable coolant system performance. This choice also facilitates engine bay cleaning, as the tube’s powder coat finish and prominent HSP Diesel logo enhance its visual appeal. The tube’s design incorporates subtle bends to ensure a seamless fit with all factory components, optimizing coolant flow.

**Package Contents:**

The HSP Upper Coolant Tube package includes:

- Aluminum HSP Upper Coolant Tube

- 1.75 Inch x 3 Inch Straight Boot

- 1.75 Inch 90 Degree Boot

- Four 1 3/4 Inch Worm Gear Clamps

Currently, HSP Diesel is implementing a running change in boot style. This may result in boots without logos. Please be advised that this change is being made to ensure our continued ability to provide you with the high-quality components you have received from HSP Diesel in the past.

**What Does the HSP Upper Coolant Tube Fit?**

The HSP Upper Coolant Tube is compatible with LML vehicles with VIN codes starting with 11 and ending with 8.

**How is the VIN Code Determined?**

The VIN code is determined by the 8th character of the VIN number. The 10th character indicates the year of the vehicle.

**Overview**

* **Aluminum Construction:** Ensures durability and longevity.

* **High-Strength Boots:** Provide exceptional resistance to impact and wear.

* **Rubber Tube Protection:** Eliminates the risk of cracking or damage.

* **Powder Coating Options:** Enhance the engine bay’s aesthetics.

* **Drop-In Replacement:** Simplifies installation and maintenance.

**Warranty**

HSP No BS Limited Lifetime Warranty

At HSP Diesel, we are committed to the quality of our products. We stand behind every product that leaves our facility. For years, we have consistently provided exceptional customer service, going above and beyond to address any issues our customers may encounter. We are proud to continue this commitment, but we are also taking it to the next level.