There are a Number of OEM Numbers and Case Styles That We Have Superseded Into the 14255. The Earliest Design is 204-115. Although There are Two Different Styles Here, the Main Internal Parts are the Same. The Later Versions Had Two Distinct Differences - the First Version, 204-116, Has a Wider Stator and a "Flat" Rear Housing Area By the Bottom Mounting Hole. The Second Version, 204-119, Has a Thinner Stator Stack and a "Step" on the Rear Housing By the Bottom Mounting Hole. All Units Will Bolt Into Every Application, Although Internal Parts Vary Somewhat. The Later 14647 Will Also Fit Here, As Will the 60A 14301 and 14652.