Direct replacement to your unit. Plug-and-play, direct fit, easy installation. No assembly required. Higher grade of electric components. Improved heat sink and charging capabilities. The quality exceeds or meet the Part Number equipment. Name:Switch Box/ Ignition Pack Engine Position: Outboard Fuel Type: Gasoline Condition: New Part Number: 18-5776 114-7452A2 114-7452A3 9-25101 339-7452A2 39-7452A3 899883230 M899883230 Compatibility: Fits For Mercury Mariner 18 2Cyl 1980 - Fits For Mercury Mariner 20 2Cyl 1986 - 1987 Fits For Mercury Mariner 25 2Cyl 1980 - 1987 Fits For Mercury Mariner 35 2Cyl 1984 - 1989 Fits For Mercury Mariner 40 2Cyl 1981 - 1984 Colour:black Material:plastic+metal Package Contents: 1 x Ignitor Switch Box 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store