Bosch is the largest auto parts supplier.
Autozone is also the largest auto parts supplier aside from Bosch.
Autozone is the largest auto parts chain with 5,914 locations in all 50 states.
Followed by, Napa Auto Parts (5.59K) and O'Reilly Auto Parts (5.27K).
Bosch is an OEM supplier of OEM parts.
However Bosch also makes and sells aftermarket parts as well.
Bosch is an original equipment manufacturer and supplier for most ignition products they carry in their aftermarket program.
Robert Bosch GmbH, commonly known as Bosch, is a German multinational engineering and technology company headquartered in Gerlingen.
The company was founded by Robert Bosch in Stuttgart in 1886. Bosch is 92% owned by Robert Bosch Stiftung, a charitable institution.
Bosch parts are engineered and factory tested to ensure years of reliable performance, regardless of extreme hot or cold temperatures. In fact, Fortune magazine named Bosch as the world's most admired company in the motor vehicle parts industry.
Bosch manufactures and trades products as diverse as diesel and gasoline fuel injection systems automotive aftermarket products auto electricals special purpose machines packaging machines electric power tools and security systems.
An OEM refers to something made specifically for the original product, while the aftermarket refers to equipment made by another company that a consumer may use as a replacement.
An Original Equipment Manufacturer or OEM is a company that manufactures and sells products or parts of a product that their buyer, another company, sells to its own customers while putting the products under its own branding.
OEM products are sold by the manufacturer based on the buyer's specifications.
ODM products are finalized or are pre-designed products that are sold under the brand name of the purchasing company.
ODM products are complete and finished products, unlike OEM products.
Aftermarket parts are replacement parts that are not made by the original equipment manufacturer.
Aftermarket parts are used to replace damaged parts in automobiles and other equipment, but their use may alter the coverage of an insured item.
Aftermarket parts are cheaper, and made by other manufacturers often several, giving you more options.
Used parts may have a bit of wear and tear, but should be inspected or rebuilt to ensure they'll work.
These are the cheapest option.