1. Replacing numbers for reference: 893353A03, fit for Mercruiser DTS. 2. Inboard ignition switch, features /OFF/ON/ positions. 3. Approximately 2 3/8x5in overall dimension, requires a cutout diameter of 7/8in. 4. With one 6spade male connection. Easy to install and use, plug and play. 5. Strictly the manufacturing standard to make performance. Item Type: Ignition Key Switch Kit Part Number: 893353A03 Fitment: Fit for Mercruiser DTS Boat part number 1075588 is a new key switch for digital throttle and shift engines, part number 87-893353A03 Positions: 4 (/OFF/ON/) Cutout Diameter: . 7/8in Overall Dimension: 2 3/8in Dia. x 5in D Connection: (1) 6-spade male connection Mounting: Fixed installation, plug and play Colour:black Material:plastic+metal Package Contents: 1x Key Switch Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.