A set of aftermarket front brake pads for a 2015 Honda Fit cost $38.99, while OEM brake pads cost $54.98. An OEM Honda Fit AC compressor costs $765.64, while an aftermarket compressor costs $224.49.

Often, this comes down to that specific part, say a coolant hose, falling into one of these categories: Original Equipment (OE), Original Equipment Manufacturer (OEM), Genuine, or Aftermarket.