2011-2019 Chevrolet Silverado 2500/3500 GMC Sierra 2500/3500 6.0L V8 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
2011–2019 Chevrolet Silverado 2500/3500 GMC Sierra 2500/3500 6.0L V8 Radiator
Heavy-duty cooling core engineered for full-size diesel and gas trucks running stock or mild power. Direct-fit replacement designed to handle sustained towing and high-load conditions without auxiliary fans or custom fabrication. Built to OEM capacity and mounting specifications.
Key Features
- OEM-spec core design - Maintains factory cooling capacity and pressure ratings for reliable operation under load.
- Direct bolt-in fit - Uses factory radiator mounting points; no custom brackets or frame modifications required.
- Heavy-gauge construction - Built to handle sustained high-temperature operation during towing and work use.
Specs
- Hard panel aluminum construction
- Factory mounting configuration
- Single-unit radiator assembly
Whats Included
- Radiator assembly only
Frequently Asked Questions
Do I need new hoses and clamps, or can I reuse the old ones?
Inspect your existing hoses for cracks, swelling, or hardening before reinstalling. If they're over 5 years old or show wear, swap them out — hose failure after a radiator swap is common. Clamps can be reused if they still clamp firmly without slipping.
What should I flush before installation?
Flush the entire cooling system with distilled water to remove old coolant residue and debris. Don't skip this step — contaminated coolant reduces heat transfer and can cause premature radiator failure. Fill with fresh 50/50 coolant mix rated for your vehicle.
Do I need to bleed air from the system after install?
Yes. Fill the radiator, start the engine, and let it idle until the thermostat opens and coolant circulates through the heater core. You may see air pockets bubble out. Run it until the temperature gauge stabilizes, then top off. Some trucks have a bleed valve on the thermostat housing — check your service manual.
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.