Auto parts liquidation comes from the returns desks and distribution centers of parts retailers and from the automotive aisles of big-box stores. A typical pallet mixes hard parts (brake pads and rotors, filters, sensors, lighting, suspension and ignition parts) with accessories (floor mats, seat covers, phone mounts, cargo organizers) and car care gear such as wash mitts, microfiber towels, brushes and detailing tools. Garage tools that live in the same aisle, such as jacks, ramps, creepers and code readers, turn up as well.
The category is really two businesses on one pallet. Accessories and car care sell like general merchandise: anyone with a car is a customer, and a bin store or flea-market table can move them. Hard parts sell only to someone who needs that exact part for that exact vehicle, so what they are worth to you depends on fitment data, part numbers and the hours you will spend matching them to buyers.
Fitment is the whole game for hard parts. The aftermarket records which vehicles a part fits using the ACES data standard and describes the part itself using PIES, and shoppers search by year, make, model and engine. A manifest line with a brand and part number can be looked up in minutes. A line that says only 'brake rotor' cannot, and that rotor is worth much less to you until you identify it in hand.
Hazardous materials are prohibited on Two Bro Sales, and in this category that rules out a good part of the aisle. Wet lead-acid batteries and airbag inflators and modules are regulated hazardous materials in transport, and automotive fluids, fuel additives, refrigerant cans and aerosol cleaners fall under the chemicals and pressurised cylinders on the prohibited list. Expect lots built from hard parts, accessories and dry car care instead, and report any lot whose manifest is full of batteries or fluids.