OEM (Original Equipment Manufacturer) - The parts or accessories original manufacturer when supplied originally on a vehicle or equipment "from factory".
Similarly, OE (Original Equipment) means the parts or accessories meet or exceeds the specifications of the original manufacturers part.
Glossary - O
OEM (OE)
OES
OES (Original Equipment Supplier) - The parts or accessories original manufacturer when supplied originally on a vehicle or equipment "from factory". Same meaning as O.E.M.
Similarly, OE (Original Equipment) when referring to quality, means the parts or accessories meet or exceeds the specifications of the original manufacturers part.
OOS
Meaning Out Of Stock, the product is not currently available