2017-2019 Chevrolet Silverado 2500HD 3500HD GMC Sierra V8 6.6L Radiator
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
2017–2019 Chevrolet Silverado 2500HD / 3500HD GMC Sierra V8 6.6L Radiator
Direct replacement radiator engineered for heavy-duty diesel cooling under load. Delivers OEM-level performance for towing, hauling, and sustained high-temperature operation. Built to handle the thermal demands of the 6.6L Duramax without compromise.
Key Features
- Direct OEM fit - No modifications or adapters required; mounts at factory connection points.
- High-capacity cooling core - Designed to manage sustained diesel engine temperatures during towing and heavy load scenarios.
- Factory-spec construction - Maintains original coolant flow and pressure ratings for reliable engine protection.
Specs
- Hard panel construction with integrated tank design
- Factory mounting configuration
- Single unit
Whats Included
- Radiator assembly
Frequently Asked Questions
Do I need a new thermostat or water pump when I swap this radiator in?
Not necessarily. If your thermostat and pump are functioning properly, they're fine to reuse. However, this is a good time to inspect both—if they're original or have high mileage, replacing them at the same time prevents a comeback job.
Will I need to flush the cooling system before installation?
Yes. Drain the old coolant completely and flush the block and hoses with distilled water before installing this radiator. Debris or contaminated coolant from the old unit will clog the new core and reduce cooling performance.
What if the radiator arrives damaged?
Inspect it immediately upon arrival before installation. Radiators cannot be field-repaired if cracked or leaking. Contact support with photos of the damage for a replacement or return—don't install a compromised unit.
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.