Freightliner Columbia 112/120 Engine Parts-Cooling

Frequently Asked Questions About Freightliner Columbia 112/120 Engine Parts-Cooling

What years and models are these cooling parts compatible with?

Our cooling parts are designed specifically for Freightliner Columbia 112 and 120 models manufactured between 2000-2017. Most radiators and cooling components fit both the 112" and 120" BBC configurations. However, engine-specific parts vary depending on whether you have a Detroit Diesel Series 60, Caterpillar C15, or Cummins ISX engine. Always verify your OEM and engine serial number before ordering to ensure proper fitment.

How difficult is it to replace a radiator on my Columbia, and what tools do I need?

Radiator replacement typically takes 3-5 hours for experienced mechanics and 6-8 hours for DIY installations. You'll need basic hand tools, a coolant drain pan (minimum 10-gallon capacity), and potentially a hoist for heavier aluminum radiators. The most challenging aspects are disconnecting the charge air cooler connections and properly aligning the mounting brackets. We recommend having a helper for lifting and positioning. Always replace the radiator cap, thermostat, and coolant hoses when installing a new radiator.

What's the difference between plastic-tank and all-aluminum radiators for my Columbia?

Plastic-tank radiators are OEM-style with aluminum cores and reinforced plastic end tanks, typically lasting 5-7 years under normal conditions. All-aluminum radiators feature welded aluminum tanks and cores, offering 30-40% better cooling efficiency and typically lasting 10+ years. While aluminum radiators cost 20-30% more upfront, they're more resistant to pressure cycles and temperature extremes. For heavy-haul applications or hot climate operations, aluminum radiators are strongly recommended.

Why is my Columbia running hot even after replacing the thermostat and coolant?

Overheating issues often involve multiple cooling system components. Common culprits include a failing water pump (check for play in the shaft or coolant weepage), restricted radiator tubes from scale buildup, malfunctioning fan clutch (should engage around 200-210?F), or damaged charge air cooler causing coolant loss. Also verify your coolant mixture is correct (typically 50/50 for -34?F to 265?F protection) and check for exhaust gases in the coolant, which indicates head gasket issues.

How often should I replace cooling system components, and what are the warning signs?

Replace coolant every 2 years or 300,000 miles, whichever comes first. Water pumps typically last 400,000-500,000 miles but should be replaced if you notice coolant leaks or bearing noise. Fan clutches generally need replacement every 300,000-400,000 miles - warning signs include constant fan engagement or failure to engage when hot. Radiator hoses should be replaced every 4-5 years or when they show signs of swelling, cracking, or soft spots. Regular pressure testing (15-20 PSI) helps identify weak components before roadside failures.