E43E-12390AA. DG-2. Fits the .531 shafts that stock Prestolite distributors use, but these exact gears are not available from them or anywhere else. Fits most Correct Craft and other ski boats with right hand rotating engines plus twin-engine boats usually for the right hand (starboard) engine with these distributors. Duplicates factory Rockwell "C" scale hardness to be compatible with stock cast iron camshafts. We've sold hundreds of the reverse gears to fit the .500 shafts and this is the same gear except machined for the .531 shafts. Comes with the 1/8" hardened roll pin.
NOTE: Please check your shaft diameter before ordering. No returns.