HSP Diesel
HSP Diesel Factory Replacement Coolant Tank for 2011-2014 Chevrolet and GMC LML Duramax
MPN: 527-1-HSP
HSP Factory Replacement Coolant Tank for 2011-2014 Chevrolet / GMC Duramax LML Part Number: 527-1-HSP The HSP Factory Replacement Coolant Tank is the perfect upgrade for 2011-2014 LML-equipped Chevrolet and GMC trucks. Whether your truck is stock or modified, this tank offers unmatched reliabilit…
$425
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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 warrantyHSP Factory Replacement Coolant Tank for 2011-2014 Chevrolet / GMC Duramax LML Part Number: 527-1-HSP The HSP Factory Replacement Coolant Tank is the perfect upgrade for 2011-2014 LML-equipped Chevrolet and GMC trucks. Whether your truck is stock or modified, this tank offers unmatched reliability and a clean, custom look under the hood. Why Upgrade to the HSP Coolant Tank? The OEM plastic coolant tank is known for premature failure. With constant heat cycling, these tanks become brittle, leading to cracks and coolant leaks — a serious risk to your engines cooling system. Not to mention, they quickly turn yellow and become an eyesore in an otherwise clean engine bay. What Makes the HSP Coolant Tank Different? The HSP Factory Replacement Coolant Tank is a direct drop-in replacement that requires no additional modifications. Crafted from CNC-cut, hand-welded aluminum, it eliminates the weaknesses of the factory plastic design. Aluminum construction also allows powder coating for a custom finish that matches or accents your build. This tank is designed for durability, reliability, and aesthetic appeal, and includes provisions for factory fittings and the low coolant sensor. Whats Included 1x LML (11-14) Factory Replacement Tank (HSP-IN-708-14) 1x Radiator Cap (RFB-806-RFAB) 14x 1/2" Heater Hose (RFB-400-RFAB) 3x 1/2" Worm Gear Clamp (RFB-405-RFAB) 1x 1" Worm Gear Clamp (RFB-406-RFAB) 1x Low Coolant Sensor LML (RFB-460-RFAB) 1x 3/8" Coolant Plug - Aluminum (RFB-808-RFAB) Fitment LML: 2011-2014 (VIN Code 8) Note: Although this tank shares a VIN code with later models, it is specific to the 2011-2014 model years due to engine bay differences. Be sure to verify your year using the 10th character of your VIN. Overview CNC cut and bent aluminum construction Reuses factory low coolant level sensor Powder coat options to enhance engine bay Direct drop-in replacement Eliminates failure-prone plastic tank Our Warranty HSP NO BS LIMITED LIFETIME WARRANTY At HSP, we believe in our products and back every unit with our "No BS" Lifetime Warranty. We've always gone above and beyond for our customers — now it's official. Our warranty is straightforward, easy to follow, and built to support you long after your purchase. Click here to read the HSP Warranty
HSP Factory Replacement Coolant Tank for 2011-2014 Chevrolet / GMC Duramax LML Part Number: 527-1-HSP The HSP Factory Replacement Coolant Tank is the perfect upgrade for 2011-2014 LML-equipped Chevrolet and GMC trucks. Whether your truck is stock or modified, this tank offers unmatched reliability and a clean, custom look under the hood. Why Upgrade to the HSP Coolant Tank? The OEM plastic coolant tank is known for premature failure. With constant heat cycling, these tanks become brittle, leading to cracks and coolant leaks — a serious risk to your engines cooling system. Not to mention, they quickly turn yellow and become an eyesore in an otherwise clean engine bay. What Makes the HSP Coolant Tank Different? The HSP Factory Replacement Coolant Tank is a direct drop-in replacement that requires no additional modifications. Crafted from CNC-cut, hand-welded aluminum, it eliminates the weaknesses of the factory plastic design. Aluminum construction also allows powder coating for a custom finish that matches or accents your build. This tank is designed for durability, reliability, and aesthetic appeal, and includes provisions for factory fittings and the low coolant sensor. Whats Included 1x LML (11-14) Factory Replacement Tank (HSP-IN-708-14) 1x Radiator Cap (RFB-806-RFAB) 14x 1/2" Heater Hose (RFB-400-RFAB) 3x 1/2" Worm Gear Clamp (RFB-405-RFAB) 1x 1" Worm Gear Clamp (RFB-406-RFAB) 1x Low Coolant Sensor LML (RFB-460-RFAB) 1x 3/8" Coolant Plug - Aluminum (RFB-808-RFAB) Fitment LML: 2011-2014 (VIN Code 8) Note: Although this tank shares a VIN code with later models, it is specific to the 2011-2014 model years due to engine bay differences. Be sure to verify your year using the 10th character of your VIN. Overview CNC cut and bent aluminum construction Reuses factory low coolant level sensor Powder coat options to enhance engine bay Direct drop-in replacement Eliminates failure-prone plastic tank Our Warranty HSP NO BS LIMITED LIFETIME WARRANTY At HSP, we believe in our products and back every unit with our "No BS" Lifetime Warranty. We've always gone above and beyond for our customers — now it's official. Our warranty is straightforward, easy to follow, and built to support you long after your purchase. Click here to read the HSP Warranty
Product conditions
Professional installation is recommended.
- 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.