Fluidyne 5 Row Extruded Tube Aluminum Radiator 11-16 GM 6.6L Duramax
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- Ships from Fluidyne High Performance
If your Duramax runs hot while towing, hauling, or sitting in traffic with a trailer behind it, you know how frustrating it is to trust a radiator that feels like it’s always one hard pull away from leaking or failing. The Fluidyne 4 Row Extruded Tube Aluminum Radiator for the Chevy/GMC 2500HD and 3500HD 6.6L Duramax was built for diesel owners who want something stronger, longer-lasting, and better at handling real-world heat without worrying about weak factory-style construction.
Instead of using thin brazed tubes, as in many traditional aftermarket aluminum radiators, Fluidyne uses a single-piece extruded aluminum core design that eliminates one of the most common failure points in standard radiators. That means added durability, improved cooling efficiency, and better confidence when your truck is working hard. Backed by over 30 years of performance cooling experience, including NASCAR applications, this radiator is designed to deliver excellent heat rejection while maintaining proper airflow and long-term reliability. Whether your truck is stock, tuned, towing heavy, or built for performance, this radiator is designed to help keep temperatures under control.
This crossflow radiator features a natural aluminum finish, 4-row aluminum core, integrated transmission cooler, upper driver-side inlet, and lower passenger-side outlet. Core dimensions measure 33.5 inches long, 27.75 inches high, and 1.75 inches deep, while overall dimensions measure 44 inches long, 28.86 inches high, and 5.87 inches deep. It fits Chevy/GMC 2500HD and 3500HD models equipped with the 6.6L Duramax engine. Fan and radiator cap are not included. Each radiator ships in heavy-duty protective packaging to help ensure it arrives safely and ready to install.
If your Duramax runs hot while towing, hauling, or sitting in traffic with a trailer behind it, you know how frustrating it is to trust a radiator that feels like it’s always one hard pull away from leaking or failing. The Fluidyne 4 Row Extruded Tube Aluminum Radiator for the Chevy/GMC 2500HD and 3500HD 6.6L Duramax was built for diesel owners who want something stronger, longer-lasting, and better at handling real-world heat without worrying about weak factory-style construction.
Instead of using thin brazed tubes, as in many traditional aftermarket aluminum radiators, Fluidyne uses a single-piece extruded aluminum core design that eliminates one of the most common failure points in standard radiators. That means added durability, improved cooling efficiency, and better confidence when your truck is working hard. Backed by over 30 years of performance cooling experience, including NASCAR applications, this radiator is designed to deliver excellent heat rejection while maintaining proper airflow and long-term reliability. Whether your truck is stock, tuned, towing heavy, or built for performance, this radiator is designed to help keep temperatures under control.
This crossflow radiator features a natural aluminum finish, 4-row aluminum core, integrated transmission cooler, upper driver-side inlet, and lower passenger-side outlet. Core dimensions measure 33.5 inches long, 27.75 inches high, and 1.75 inches deep, while overall dimensions measure 44 inches long, 28.86 inches high, and 5.87 inches deep. It fits Chevy/GMC 2500HD and 3500HD models equipped with the 6.6L Duramax engine. Fan and radiator cap are not included. Each radiator ships in heavy-duty protective packaging to help ensure it arrives safely and ready to install.
Diesel Power Products directs warranty claims to the respective manufacturer; coverage and duration depend on that manufacturer and product. Its one-year manufacturer-defect warranty applies only to products manufactured by Power Products Unlimited Inc., not all products it sells. Manufacturer inspection is required; DPP does not pay inspection/return shipping or labor.
Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
Diesel Power Products warranty policyView complete warrantyProduct conditions
Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
- Return eligibility
- Diesel Power Products states a 30-day window from receipt for eligible new, uninstalled, unopened and complete items in original packaging, with prior approval/RMA. Custom tuners and specified opened tools are excluded. Customer pays return shipping; original outbound shipping, including initially free shipping, is deducted. No standard restocking percentage is stated for ordinary approved returns. Based on what Diesel Power Products 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
- Diesel Power Products
- Warranty duration
- Product-specific duration not stated; see supplier terms
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–7 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- Diesel Power Products
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.