Zexel is a Japanese auto-components manufacturer. It was founded in 1939 as Diesel Kiki Co., Ltd., under a Bosch license, for domestic production of fuel-injection pumps for diesel engines. Originally established with an investment from Isuzu Motors Ltd., (a major Japanese manufacturer of engines for heavy-duty vehicles), this company was renamed ZEXEL Corp. in 1990.

The company was reorganized as Bosch Automotive Systems Corp. in 2000 after Robert Bosch GmbH of Germany bought majority shares in Zexel Corporation.

Zexel is now a Bosch brand name