Parts knowledge, straight from the shop floor.

Practical guides, maintenance tips, and part-selection advice for owner-operators and fleet managers working with Class 8 heavy-duty trucks.

Topics: All Cooling System A/C System Maintenance Buyer's Guides Troubleshooting Freightliner Kenworth Peterbilt

Maintenance Cooling System Class 8

5 Signs Your Semi Truck Radiator Needs Replacing (And What It Costs to Wait)

The cooling system on a Class 8 truck does a job most drivers take for granted — until it stops working. Learn the five warning signs before they turn into a five-figure repair bill.

March 14, 2026 | 8 min read

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Mechanic installing new radiator in semi truck engine bay — heavy-duty truck cooling system repair

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