Worm Drive Motor

I'd Like to Know:

I would like to know what kind of starter this is, what it does, what it is used for, what it goes to and who manufactured it. Thanks so much.

Item History: N/A

Size: It is 9" in overall length and is 3" in diameter. The rectangular plastic box attached is 4-7/8" wide, 3-7/8" long.

Markings: None.