HSP Diesel Factory Replacement Coolant Tank for 2015-2016 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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HSP Factory Replacement Coolant Tank for 2015-2016 Chevrolet / GMC Duramax LML Part Number: 527-2-HSP The HSP Factory Replacement Coolant Tank is a critical upgrade for 2015-2016 LML Duramax-equipped Chevrolet and GMC trucks. This component replaces the failure-prone factory unit with a stronger, better-looking solution designed for long-term durability and performance. Why Upgrade to the HSP Coolant Tank? The OEM coolant tank is constructed from plastic, which becomes brittle over time due to heat cycles. This brittleness leads to cracks, leaks, and ultimately coolant system failure. Additionally, the plastic discolors and yellows, making your engine bay look aged and poorly maintained. What Makes the HSP Coolant Tank Different? The HSP Coolant Tank is CNC-cut and bent from high-quality aluminum, eliminating the risk of cracking. Its a direct drop-in replacement, meaning it fits the OEM location and works seamlessly with factory provisions and fittings — including the factory low coolant level sensor. With the aluminum construction, you also gain the option to powder coat for a clean, custom appearance under the hood. Whats Included 1x LML (15-16) Factory Replacement Tank (HSP-IN-708-16) 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 (RFB-460-RFAB) 1x 3/8" Coolant Plug - Aluminum (RFB-808-RFAB) Fitment LML: 2015-2016 (VIN Code 8) Important: This coolant tank is designed specifically for 2015-2016 models due to slight engine bay variations. Confirm fitment using the 8th character (engine code) and 10th character (model year) of your VIN. Overview Reuses factory low coolant level sensor CNC-cut and bent aluminum for durability Eliminates failure-prone plastic tank Powder coating options available for customization Direct drop-in replacement Our Warranty HSP "NO BS" LIMITED LIFETIME WARRANTY We proudly back every HSP product with our industry-leading "No BS" Lifetime Warranty. You can count on us to support you no matter what — just like we always have. To learn more about what's covered and how to file a claim, click below. Click here to read the HSP Warranty
HSP Factory Replacement Coolant Tank for 2015-2016 Chevrolet / GMC Duramax LML Part Number: 527-2-HSP The HSP Factory Replacement Coolant Tank is a critical upgrade for 2015-2016 LML Duramax-equipped Chevrolet and GMC trucks. This component replaces the failure-prone factory unit with a stronger, better-looking solution designed for long-term durability and performance. Why Upgrade to the HSP Coolant Tank? The OEM coolant tank is constructed from plastic, which becomes brittle over time due to heat cycles. This brittleness leads to cracks, leaks, and ultimately coolant system failure. Additionally, the plastic discolors and yellows, making your engine bay look aged and poorly maintained. What Makes the HSP Coolant Tank Different? The HSP Coolant Tank is CNC-cut and bent from high-quality aluminum, eliminating the risk of cracking. Its a direct drop-in replacement, meaning it fits the OEM location and works seamlessly with factory provisions and fittings — including the factory low coolant level sensor. With the aluminum construction, you also gain the option to powder coat for a clean, custom appearance under the hood. Whats Included 1x LML (15-16) Factory Replacement Tank (HSP-IN-708-16) 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 (RFB-460-RFAB) 1x 3/8" Coolant Plug - Aluminum (RFB-808-RFAB) Fitment LML: 2015-2016 (VIN Code 8) Important: This coolant tank is designed specifically for 2015-2016 models due to slight engine bay variations. Confirm fitment using the 8th character (engine code) and 10th character (model year) of your VIN. Overview Reuses factory low coolant level sensor CNC-cut and bent aluminum for durability Eliminates failure-prone plastic tank Powder coating options available for customization Direct drop-in replacement Our Warranty HSP "NO BS" LIMITED LIFETIME WARRANTY We proudly back every HSP product with our industry-leading "No BS" Lifetime Warranty. You can count on us to support you no matter what — just like we always have. To learn more about what's covered and how to file a claim, click below. 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.