Coolant Reservoir for 2011-2016 LML 6.6L Duramax Coolant Overflow Tank
Coolant Reservoir for 2011-2016 LML 6.6L Duramax Coolant Overflow Tank
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Coolant Reservoir for 2011-2016 LML 6.6L Duramax Coolant Overflow Tank
The Coolant Reservoir Tank is a replacement for the factory coolant tank, designed to relocate it closer to the battery box, freeing up additional space in the engine compartment. Constructed from high-quality aluminum alloy, the tank features a durable powder-coated finish for enhanced protection and a sleek appearance. It is equipped with an integrated coolant level sensor that connects seamlessly to the factory harness, providing accurate coolant level monitoring. Upgrade your coolant tank with the Coolant Tank for improved functionality and a clean, professional look.
Key Selling Points of the Coolant Reservoir Tank:
-
High-Quality Aluminum Alloy Construction
Built from durable aluminum alloy for superior strength and corrosion resistance, ensuring long-lasting performance even under extreme conditions. -
Powder-Coated Finish
Features a premium powder-coated surface that enhances durability, provides scratch resistance, and offers a sleek, professional look. -
Integrated Low Coolant Level Sensor
Comes with a built-in coolant level sensor that connects directly to the factory harness, ensuring real-time and accurate monitoring of coolant levels. -
Billet Anodized Cap
Includes a high-quality billet aluminum cap with an anodized finish, offering enhanced durability and a premium aesthetic touch. -
Overflow Hose
Equipped with an overflow hose to ensure proper coolant system functionality and prevent over-pressurization. -
Coolant Level Sight Glass
Designed with a sight glass for quick and easy visual checks of coolant levels without needing to open the tank. -
Complete Installation Hardware
Includes all necessary installation hardware, making the upgrade process straightforward and hassle-free.
Specifications:
| Weight | 3.04kg |
| Type | Coolant Expansion Tank |
| Installation Level | Simple |
| Fitment | 2011-2016 GMC/Chevrolet LML Sierra/Silverado 2500HD 3500HD 6.6L Duramax Diesel |
Fast Shipping Policy
Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date.
Easy Return Policy
Every order comes with a 14-day free return, which means you don't have to pay for a return slip.
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- One-Year Warranty
- 14-Day Return
- 4-12 Days To Arrive

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Frequently Asked Questions
What is a delete tuner?
A delete tuner is a device that reprograms yourtruck's ECM (computer) to turn off emissionssystems like the DPF, EGR, and DEF, allowing yourtruck to run without those components
Can l use a delete tuner withoutphysically removing TheDPF/DEF/EGR parts?
You MUST remove your DPF(Diesel ParticulateFilter), as the filter will clog and stop all exhaust flowwhen shut off. You will no longer need DEF(DieselExhaust Fluid), and you may remove your DEF tankif you wish, or it can sit empty. The EGR may remainas is, but we recommend removing the physicalparts as well.
Is a Delete Tune bad for mytruck's engine?
Quite the opposite. In fact, many customers reportimproved engine life, smoother shifting, and betterfuel economy (typically 3-5 MPG gains) when usinga quality delete tuner.
What's the difference between adelete tuner and a delete tune?
The tuner is the hardware device. The tune is thesoftware file that gets uploaded to your truck's ECM.Your delete tuner includes a delete tune when youpurchase from us.
Do delete tuners void my warranty?
Yes. Any emissions-related modification, includingtuning, can void the manufacturer's warranty. Manycustomers wait until after their warranty expiresbefore deleting.
Do l need a mechanic to install thetuner? How long does installationtake?
Not necessarily. Many of our customers install their delete tuner themselves in under 30 minutes. We include easy-to-follow instructions, and our support team is available if you need help.
Will my truck pass inspection oremissions testing with a deletetuner?
No. Delete tuners disable emissions systems, so your truck will not pass emissions tests in areas where they're required. Some states have exemptions (e.g. heavy-duty or rural-use trucks).
Can l go back to stock afterinstalling a delete tuner?
Yes. However, in most cases you will have to have the ECM flashed at the dealership. If this is a concern, contact our team and we can explain further.
Is the delete tune VlN-locked?
Yes. All delete tunes are VIN specific and will only work on one truck. The tuner (hardware device), may be used on multiple vehicles for diagnostic or monitoring purposes where applicable.
What support do l get with my tuner?
We offer lifetime customer support, step-by-step install guides, and remote help from our tuning team. You're never left hanging, even after the sale.