A heavy duty truck radiator is a large cooling-system component designed to remove excess heat from the engine of commercial trucks, buses, construction vehicles, and other high-load vehicles.

How it works:

• The engine generates heat while running.
• Coolant (a water/antifreeze mixture) circulates through the engine and absorbs that heat.
• The hot coolant flows into the radiator.
• Air passing through the radiator's fins carries the heat away.
• The cooled coolant returns to the engine to repeat the cycle.

Why heavy-duty truck radiators are different compared with radiators in passenger cars? Heavy-duty truck radiators are:

• Larger to handle bigger engines.
• More durable to withstand vibration, long operating hours, and harsh conditions.
• Higher capacity because diesel engines in trucks produce large amounts of heat, especially when hauling heavy loads.
• Manufactured with aluminum cores, copper-brass cores, and reinforced headers and tanks for longevity.

Aftermarket Heavy Duty Truck Radiators

Dura-Lite™ aftermarket heavy duty truck radiators are replacement radiators designed for commercial trucks and other heavy-duty equipment. Dura-Lite's approach is to take the original OEM radiator design and reinforce common failure points to improve durability, cooling efficiency, and service life.

Dura-Lite offers both:

• Plastic Tank/ Aluminium Core Radiators (used on most newer applications).
• Steel Tank/ Copper Brass Core Radiators (for older and industrial applications).

Our aftermarket Plastic Tank/ Aluminium Core Radiators include:

• Stronger fiber-reinforced tanks to prevent stress cracking.
• Reinforced headers and extra header-stiffening plate to reduce leaks between tank, header, and tubes.
• Higher-efficiency core design, heavier gauge tubes, and improved cooling capacity.

Why users prefer Dura-Lite?

The most common radiator failures occur around tank-to-header and tube-to-header connections. Our designs add structural reinforcement in these areas to help resist vibration, thermal cycling, and stress cracking experienced in heavy-duty trucking.

Heavy Duty Truck Radiators 

What sets Dura-Lite heavy-duty truck radiators apart is not just that they are replacement radiators, but that they are engineered to address the most common OEM radiator failure points. Rather than simply copying the original design, Dura-Lite recognizes important weaknesses in OEM radiators and applies our substantial engineering design knowledge and experience to reinforce areas that typically fail from vibration, thermal cycling, and heavy-duty usage.

The defining strength of Dura-Lite radiators is durability by design. Our radiators reinforce the areas that most commonly fail in OEM heavy-duty truck cooling systems, the tanks, headers, and tube joints, while also improving cooling efficiency. That translates into fewer leaks, reduced downtime, and potentially longer radiator service life compared with standard replacement radiators.

Heavy Duty Truck Radiator Catalog

Dura-Lite's Heavy Duty Truck Radiator Catalog is an online parts catalog designed to help fleet operators, owner-operators, repair shops, OEM dealerships, and parts distributors identify the correct replacement radiator for heavy-duty trucks and commercial vehicles. The catalog includes more than 375 radiator models (as well as charge air coolers) covering a wide range of truck makes and applications.
How to search the Catalog - Dura-Lite provides two primary search methods:

OEM Part Number Search

• Enter the original equipment (OEM) radiator part number into the cross-reference search tool.
• The system returns the matching Dura-Lite replacement part and inventory availability.
• Dura-Lite recommends this as the most accurate method because some truck models have multiple cooling-system configurations.

Make, Model, and Year Search

• Select the truck make.
• Select the model.
• Select the year.

The catalog displays compatible radiators for that vehicle.

Connect with Dura-Lite

At Dura-Lite, we are always here to help. If you have questions or need further assistance, please visit our website or call us Toll Free at (800) 661-1117.

Demand Excellence! Demand Performance! Demand Quality! Demand Dura-Lite!