HSP Diesel Factory Replacement Coolant Tank for 2011-2014 Chevrolet and GMC LML Duramax
This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
Colours and prices as published by HSP Diesel · verified 9/8/2026
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- Ships from HSP Diesel
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
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
HSP offers a limited lifetime warranty to the original purchaser on eligible HSP products. Underhood powder coating has separate two-year limited coverage. Non-HSP brands follow their own manufacturer warranties. Discontinued products and customer/installer damage are excluded. Claim authorization is required; customer pays inbound shipping for ordinary claims.
Return and warranty information is based on what HSP Diesel offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
HSP Diesel warranty policyView complete warrantyProduct conditions
Return and warranty information is based on what HSP Diesel offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
- Return eligibility
- HSP states returns must be postmarked within 30 days of purchase, new and unused with original tags and packaging, with an approved RMA. A 15% restocking fee and customer-paid return shipping apply. Special orders, non-HSP dropship products, apparel, used items and custom colors are excluded. Based on what HSP Diesel offers.
- Return window
- Not stated for this product; see supplier terms
- Restocking fee
- See supplier terms; no product-specific fee stated
- Return shipping
- Based on the supplier’s return policy; see terms
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
- Warranty provider
- HSP Diesel
- Warranty duration
- Product-specific duration not stated; see supplier terms
- 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.