New, permanent magnet, parallel shaft gearmotor. Cast aluminum gear housing and motor end cap with steel motor frame. 12V DC electro-mechanical brake on rear of motor with manual release lever. Replaces Power Gear motors: 521976W, 521976, 523983, 524327, 524097, 520819, 522967, 523036, 523931, 524246, 523498, 523432, 523143, 523529, 524094, 52441. [Upgrade Quality] The replacement slide out motor by power gear 523900 is made of durable high-quality materials Well-tested by the manufacturer, meets OEM standards.
