Shop Freightliner Columbia 112 & 120 AC Driers and Compressors

Check out our selection of Freightliner Columbia 112/120 AC driers and compressors at 4 State Trucks. We offer BESTfit AC Compressors with 2 groove clutches, 6 groove clutches, and various mounting bracket kits, ensuring the perfect fit. Shop confidently for the best deals and expert support.

Freightliner Columbia 112/120 AC Driers-Compressor

The Freightliner Columbia 112/120 AC Driers-Compressor product lineup features a comprehensive selection of air drier and AC compressor parts designed to fit a variety of Freightliner truck models. This includes the popular Freightliner Century, Columbia, Classic, and Coronado lines. Key benefits of the products in this product lineup include improved cooling performance, extended system life, and seamless replacement of worn or faulty components. Whether you need a replacement AC compressor, drier, or associated accessories, this product lineup has the high-quality, BESTfit parts to keep your Freightliner's climate control system running at its best. With a focus on popular makes/models and a wide range of options, this product lineup is a go-to resource for Freightliner fleet owners and maintenance professionals.

Frequently Asked Questions About Freightliner Columbia 112/120 AC Driers-Compressors

Will these AC driers and compressors fit my specific Freightliner Columbia model year?

Our AC driers and compressors are designed to fit Freightliner Columbia 112 and 120 models from 2001-2015. However, compatibility can vary based on your specific engine type (Detroit, Caterpillar, or Cummins) and whether you have a factory or aftermarket AC system. We recommend checking your existing part numbers or calling our tech support at 417-624-8400 with your VIN to ensure proper fitment before ordering.

How difficult is it to replace the AC drier and do I need special tools?

Replacing an AC drier typically takes 1-2 hours for someone with basic mechanical skills. You'll need standard hand tools, a vacuum pump, AC manifold gauges, and proper refrigerant recovery equipment. The drier should always be replaced when installing a new compressor to prevent contamination. Many customers choose professional installation since the AC system requires proper evacuation and recharging with the correct amount of refrigerant (usually R134a).

What's the difference between OEM and aftermarket compressors, and which should I choose?

OEM compressors like Sanden SD7H15 or SD709 units typically last 200,000-300,000 miles with proper maintenance, while quality aftermarket options can offer similar performance at 30-40% less cost. Aftermarket compressors often come with new clutches pre-installed, while OEM units may require clutch transfer. Both options work well, but OEM parts usually have better warranty coverage and exact fit guarantee. Consider your budget and how long you plan to keep the truck.

Why did my AC compressor fail and how can I prevent it from happening again?

Common causes of compressor failure include low refrigerant levels, contaminated oil, worn clutch bearings, or blocked orifice tubes. To extend compressor life, run your AC for 10-15 minutes monthly (even in winter), check belt tension regularly, and service the system annually. Always replace the drier, flush the system, and install a new orifice tube when replacing a failed compressor to prevent debris from damaging the new unit.

What size AC drier do I need and are there different inlet/outlet configurations?

Most Freightliner Columbia models use a standard 3" x 8" receiver-drier with #8 and #10 fittings, but some configurations vary. Early models (2001-2003) may have different port locations than later years. Driers with sight glasses help monitor refrigerant levels and moisture content. Always match your existing drier's dimensions and fitting sizes - taking a photo of your current setup before removal helps ensure you order the correct replacement.