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Heavy Duty Radiator

Aftermarket Spectra Premium heavy duty truck radiator

The main component of the cooling system, a radiator’s main purpose is to keep an engine at the optimal operating temperature, which it achieves by absorbing excess heat generated by the engine and lowering the coolant temperature with the air passing through the vehicle’s front grille. The Heavy Duty version of the radiator fits light and heavy-duty trucks, and off-highway equipment. They are built to sustain more stress and more heat generated over long periods of time.

Spectra Premium is the leading North American aftermarket heavy duty radiator manufacturer
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Most Common Heavy Duty Radiator Products

Spectra Part Number Most Popular Applications
2001-1711 12-04 Freightliner Business Class M2
07-04 Freightliner Century Class
07-03 Freightliner Columbia
06-05 Freightliner FLD120
08-05 Freightliner FS65
2001-4608 17-08 Mack CXU
13-11 Volvo VAH
17-08 Volvo VNL
17-08 Volvo VNM
16-15 Volvo VNX
2001-1723 13-08 Freightliner Cascadia
10-09 Freightliner Century Class
10-08 Freightliner Columbia
10-09 Sterling Truck L9500
2001-3503 02-94 International 2554
03-95 International 2574
00-99 International 2654
03-95 International 2674
2001-1707 04-96 Freightliner Century Class
03-01 Freightliner Classic XL
11-00 Freightliner Columbia
03-99 Freightliner FL112
95-94 Freightliner FLD112
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Other Spectra Premium heavy duty radiators

Accessories available

  • Radiator Installation Accessory
  • Radiator Mount
  • Core gasket
  • Coolant tester
  • Radiator cap
Related products: Charge Air Cooler,

Common Heavy Duty Radiator Failure Symptoms

  • Leaking coolant
  • Overheating engine
  • Deposits in the coolant
  • Reducing coolant level

Common Causes of Failure


Electrolysis problems appear when an electric current circulates in a cooling system. Electrolysis is the first cause of failure for aluminum radiators and has increased with the rising number of electric and electronic accessories.


Cooling systems use a 1:1 mix of distilled water and antifreeze to absorb engine heat and protect against corrosion. Contaminated coolant increase the fluid acidity which wears down the aluminum until leaks start to appear.


As a front-end part, radiators are often involved in collisions. Even if the initial impact does not damage the radiator, smaller leaks in the cooling system can be found afterwards which also warrants radiator replacement.

The radiator protects the engine from overheating. If the radiator fails and the engine overheats, it could result in irreversible damage to the engine.

Radiator replacement importance

If the radiator fails and the engine overheats, it could result in irreversible damage to the engine When replacing your radiator, it is important to understand the root cause of failure: proper cooling system maintenance. It’s important to inspect the radiator pressure cap and thermostat for proper operation. The coolant reservoir needs to be inspected for cracks and leaks. The radiator cooling fan needs to be inspected for proper engagement. The water pump needs to be inspected for coolant leaks, and last but not least, the engine coolant needs to be tested for contamination. Performing a complete cooling system flush is strongly recommended when replacing any cooling system part.

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Heavy Duty Radiator warranty