Cooling System

Yes, Auto‑jet supplies replacement coolant tubes for Thomas Built and Freightliner school buses, matched by engine and OE number. Coolant tubes route engine coolant on rear-engine and conventional chassis, and the correct tube depends on the engine (Cummins ISC/ISB, Caterpillar C-7) and the OE number on the original tube. Match by the number stamped on the old tube. What to Confirm Before Ordering a Coolant Tube Coolant tubes are engine-specific and position-specific (upper,

Sustained summer heat pushes school bus cooling systems past their design limits. School bus cooling system failure peaks in the first heat wave of summer service, when components that ran fine through the school year finally give out. The two parts that fail most often, charge air coolers and radiators, give specific warning signs before they go. This post covers the symptoms, the replacement criteria, and how to confirm fitment before ordering. For the winter half of this s

School bus charge air cooler failure is a gradual power-loss problem that does not generate an obvious fault code in early stages. By the time a failing charge air cooler is causing noticeable symptoms, it has typically been leaking for some time. Knowing the symptoms and how to test for it gets the diagnosis right the first time and avoids replacing the wrong component. What Causes School Bus Charge Air Cooler Failure The charge air cooler cools compressed air from the turbo

School bus radiator replacement becomes the right call when repair stops being cost-effective, or stops holding. Knowing the difference between a one-time fixable failure and a radiator past the repair threshold saves your shop from doing the same job twice. School Bus Radiator Replacement vs. Repair: How to Decide The distinction matters because a repair on a core that is systemically failing is a temporary fix that will come back inside the same season. Auto‑jet Part # Fits