Intercooler Bar and Plate - 2001-2005 LLY LB7 Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
Intercooler Bar and Plate - 2001-2005 LLY LB7 Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
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Description
The 6.6L Duramax intercooler is manufactured with heavy-duty cast aluminum end tanks and a stout bar-and-plate core, designed to decrease intake temperatures, improve airflow, and reduce pressure drop. By decreasing pressure drop this intercooler will extend the life of your turbocharger and improve the efficiency of your 6.6L Duramax.The 6.6L Duramax intercooler features a core with greater volume than the factory cooler; this results in numerous performance benefits including increased pressure tolerance and lower EGTs. We engineered this intercooler to provide substantial benefits on a stock truck, and also to support the power and boost levels of a highly modified truck.
Fitment
- 2001-2005 Chevrolet/GMC Sierra 2500HD 3500HD LLY LB7 6.6L Duramax
Key Features
-
Bar-and-Plate Core Construction
Delivers superior cooling capacity and strength compared to OEM-style tube-and-fin intercoolers. -
Cast Aluminum End Tanks
Designed for maximum durability and optimized internal airflow. -
Mandrel-Bent Cold-Side Intercooler Pipe
Increases flow and reduces intake turbulence. -
Reduced Pressure Drop
Boosts turbo efficiency, reduces turbo strain, and enhances throttle response. -
Lower Intake Air Temperatures (IATs)
Improves combustion and performance while reducing EGTs. -
DuraCore™ Reinforcement Technology
Provides outstanding resistance to heat, fuel, oil, and pressure. -
High-Quality T-Bolt Clamps Included
Ensures consistent clamping force even under extreme conditions. -
Lifetime Warranty
Confidence in long-term durability and performance.

34% Larger Core for Maximum Cooling Efficiency and Performance Gains
The Intercooler features a 3.35-inch bar-and-plate core, offering a significant upgrade over the factory's 2.48-inch core, resulting in a 34% increase in size. When comparing the bar-and-plate core to the traditional tube-fin design, there's a notable 32.5% increase in core volume. This enhanced design improves airflow and cooling efficiency, making it an ideal choice for boosting the performance and durability of your vehicle.

Specifications
| Core Type | Bar-and-Plate |
| Material | Cast Aluminum End Tanks |
| Cold-Side Pipe | Mandrel-Bent Polished Aluminum |
| Inlet / Outlet Size | 3.0 in |
| Core Thickness | 2.05 in |
| Core Length | 38.27 in |
| Core Height | 18.86 in |
| Overall Length | 45.6 in |
| Overall Height | 23.4 in |
| Overall Width | 8.2 in |
| Warranty | Lifetime |
FAQs
Q: What is the difference between this bar-and-plate intercooler and the factory one?
A: The intercooler features a bar-and-plate design for superior strength, better heat dissipation, and less pressure drop compared to the factory tube-and-fin design.
Q: Does this intercooler require any cutting or modification to install?
A: No. This is a direct bolt-on replacement for the factory intercooler and requires no cutting or custom fabrication.
Q: Will this intercooler support a tuned or modified truck?
A: Absolutely. It is engineered to handle increased boost pressures and higher airflow demands of heavily modified 6.6L LLY LB7 Duramax engines.
Q: What benefits will I notice after installing this intercooler?
A: You can expect reduced intake air temperatures, lower exhaust gas temperatures, improved throttle response, and increased turbo longevity.
Q: What material are the end tanks made from?
A: The end tanks are made from high-strength cast aluminum for maximum
Q: Are the clamps included with the intercooler kit?
A: Yes, the package includes premium constant-tension T-bolt clamps for a secure and leak-free installation.
Q: Is this product covered under warranty?
A: Yes, offers a Lifetime Warranty on this intercooler for peace of mind and long-term performance.
Q: Will this intercooler help reduce turbo stress?
A: Yes, by reducing pressure drop and improving cooling efficiency, it helps your turbocharger operate more efficiently and extends its life.
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.