HSP Diesel 2011-2014 LML Duramax Factory Replacement Coolant Tank - 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 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