Shop / Maintenance & Replacement / HSP Diesel Upper Coolant Tube for 2015-2016 Chevrolet and GMC LML Duramax
HSP Diesel
HSP Diesel Upper Coolant Tube for 2015-2016 Chevrolet and GMC LML Duramax
MPN: 537-2-HSP
2015-2016 Chevrolet / GMC Upper Coolant Tube Part Number: 537-2-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 sty…
$150
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Fitment sensitive
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Colours and prices as published by HSP Diesel · verified 9/8/2026
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Warranty
Warranty Information Pending
Warranty information has not yet been provided for this product. Contact FullSpecDiesel for help locating the applicable manufacturer or supplier warranty.
View complete warranty2015-2016 Chevrolet / GMC Upper Coolant Tube Part Number: 537-2-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. Whats Included: 1x LML (15-16) Radiator Hose Tube w/Logo (HSP-IN-239-2) 4x 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) Fitment: LML: 2015-2016 (VIN Code 8) Important Fitment Note: This only fits 2015-2016 model year LML trucks. While VIN codes may appear the same across years, there are engine bay differences. Double-check your vehicles year before purchasing. How to Check VIN Code: The 8th character of the VIN number indicates engine code. The 10th character shows the model year. Overview Aluminum construction for increased reliability High-strength silicone boots included Eliminates rubber cracking issues Powder coat options available Drop-in replacement with factory fitment Note: HSP is currently making a running change to boot styles. You may receive boots without logos — this ensures continued delivery of the high-quality parts you expect. Our Warranty HSP "NO BS" LIMITED LIFETIME WARRANTY At HSP, we believe in our products and stand firmly behind everything we make. For years, we've gone above and beyond to support our customers — even without a formal warranty. Now, with the No BS Warranty, we've made our commitment official. You can trust that you're covered with a lifetime guarantee that actually means something. Click here to read the HSP Warranty
2015-2016 Chevrolet / GMC Upper Coolant Tube Part Number: 537-2-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. Whats Included: 1x LML (15-16) Radiator Hose Tube w/Logo (HSP-IN-239-2) 4x 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) Fitment: LML: 2015-2016 (VIN Code 8) Important Fitment Note: This only fits 2015-2016 model year LML trucks. While VIN codes may appear the same across years, there are engine bay differences. Double-check your vehicles year before purchasing. How to Check VIN Code: The 8th character of the VIN number indicates engine code. The 10th character shows the model year. Overview Aluminum construction for increased reliability High-strength silicone boots included Eliminates rubber cracking issues Powder coat options available Drop-in replacement with factory fitment Note: HSP is currently making a running change to boot styles. You may receive boots without logos — this ensures continued delivery of the high-quality parts you expect. Our Warranty HSP "NO BS" LIMITED LIFETIME WARRANTY At HSP, we believe in our products and stand firmly behind everything we make. For years, we've gone above and beyond to support our customers — even without a formal warranty. Now, with the No BS Warranty, we've made our commitment official. You can trust that you're covered with a lifetime guarantee that actually means something. Click here to read the HSP Warranty
Product conditions
- Return eligibility
- Returnable within 30 days of confirmed delivery, in original condition, with an approved RMA
- Return window
- 30 days from confirmed delivery
- Restocking fee
- No restocking fee
- Return shipping
- Customer pays return shipping on voluntary returns
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Cancellation is only possible before the supplier order is submitted
- Warranty provider
- Warranty Information Pending
- Warranty duration
- Pending verification
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–10 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- HSP Diesel
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.