CSF 11-12 Silverado H.D / Sierra H.D 6.6L Turbo Diesel Heavy Duty Intercooler

The CSF 11-12 Silverado H.D / Sierra H.D 6.6L Turbo Diesel Heavy Duty Intercooler is engineered to meet the rigorous demands of turbocharged diesel engines, providing a reliable and efficient cooling solution for your heavy-duty vehicle. Designed specifically for the 2011-2016 Chevrolet Silverado 2500 and 3500 HD, as well as the GMC Sierra 2500 and 3500 HD models equipped with the 6.6L V8 turbocharged diesel engine, this intercooler ensures optimal performance under extreme boost conditions.

Constructed with a heavy-duty bar and plate core, the intercooler features all-aluminum cast end tanks that contribute to its durability and heat dissipation capabilities. The high-density internal and external fin design maximizes surface area contact, enhancing cooling efficiency and maintaining lower intake air temperatures. This design is critical for preserving engine power and preventing heat soak during demanding operations.

One of the key advantages of this CSF intercooler is its precise "drop-in" fit, which allows for straightforward installation without the need for any modifications. The OEM-style quick-connect inlet and outlet connections ensure a secure and accurate fit, maintaining factory specifications and simplifying the upgrade process. This feature minimizes downtime and installation complexity, making it an ideal choice for professional mechanics and vehicle owners alike.

Reliability is further assured by rigorous pressure testing at 120 psi, verifying the intercooler’s integrity and performance in high-boost applications. This testing standard guarantees that the intercooler can withstand the demanding pressures generated by turbocharged diesel engines, reducing the risk of failure and ensuring consistent operation over time.

In addition to its robust construction, the intercooler is finished with CSF’s proprietary thermal rejection powder coating. This advanced coating technology improves heat dissipation by up to 15% compared to non-coated units, enhancing overall cooling performance. The powder coating also provides a sleek, OEM+ appearance that complements the vehicle’s engine bay aesthetics while offering protection against corrosion and environmental wear.

Features

• Heavy duty bar & plate core construction for enhanced durability
• All-aluminium cast end tanks designed for superior strength and heat management
• High-density internal/external fin design to maximize cooling efficiency and surface area contact
• “Drop-in” fit requiring no modifications, ensuring a seamless upgrade experience
• Pressure tested at 120 psi to guarantee reliability in extreme boost conditions
• Precise “Quick-Connect” inlet/outlet connections for secure OEM fitment
• CSF’s advanced thermal rejection powder coating for improved heat dissipation and corrosion resistance

Applications

OEM Part Numbers

• Chevrolet: 23359895
• Chevrolet: 25838896
• GMC: 23359895
• GMC: 25838896

Warranty

Cooling Systems and Flexibles, Inc. (CSF) stands behind the quality and durability of their High-Performance Cooling Systems. The CSF 11-12 Silverado H.D / Sierra H.D 6.6L Turbo Diesel Heavy Duty Intercooler is covered under a 2-year warranty for the original purchaser, provided the product is used under normal conditions and installed in the original vehicle. This warranty reflects CSF’s commitment to delivering dependable products that meet professional standards.

For comprehensive warranty details and terms, please visit our Warranty Page.

SKU# 7101 Warranty Term: 2 years

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.