Frequently Asked Questions About Peterbilt 330/335/337 AC Condensers

Will these AC condensers fit my specific Peterbilt 330, 335, or 337 model year?

These AC condensers are designed to fit Peterbilt 330, 335, and 337 models from 2005 through 2015. However, there are variations based on your specific engine configuration and whether you have a standard or extended hood. Before ordering, check your VIN and compare the part number on your existing condenser. Most units will have a sticker or stamped number on the side tank. If you're unsure, contact us with your truck's VIN and we'll verify the correct fit.

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

OEM condensers are manufactured to Peterbilt's exact specifications and typically feature thicker aluminum cores and reinforced mounting brackets. Aftermarket options can save you 30-50% but may have thinner fins or different bracket designs. For trucks under warranty or in heavy-duty applications, we recommend OEM. For standard duty cycles, quality aftermarket brands like Reach Cooling or Spectra Premium offer excellent value with comparable cooling performance and 1-2 year warranties.

Can I install the AC condenser myself, or do I need special tools?

Installation requires intermediate mechanical skills and specific tools including a refrigerant recovery system, vacuum pump, and manifold gauge set. The job typically takes 3-4 hours and involves removing the grille, radiator support brackets, and properly evacuating the AC system. You'll also need new O-rings, approximately 2.5 lbs of R134a refrigerant, and PAG oil. If you don't have AC service equipment, professional installation runs $300-500 but ensures proper system evacuation and charging.

How can I tell if my AC condenser is failing before it completely stops working?

Common early warning signs include reduced cooling performance, visible refrigerant oil stains on the condenser fins, bent or damaged fins blocking more than 20% of the surface area, or small rock impact damage causing pinhole leaks. Use a UV dye kit to check for slow leaks. If your AC cycles on and off frequently or takes longer to cool the cab, have your system pressure tested. Catching issues early can prevent compressor damage and more costly repairs.

What's included with the condenser, and what additional parts will I need?

Most condensers come as the core unit only with inlet and outlet fittings. You'll need to purchase separately: receiver-drier (always replace when changing condenser), O-ring kit specific to your model year, refrigerant oil (check compressor specs for type and amount), and mounting hardware if your original brackets are damaged. Some units include mounting pads, but verify this in the product description. Budget an extra $75-150 for these necessary components to complete the job properly.