Feature 1, Our robust plastic housing helps protect the ignition coil from damage. 2, Made of high quality metal and plastic material, lightweight and durable in use. 3, Replacing OE numbers for reference: 300-879984T01 300-8M0077471. 4, Original standard, direct replacement for your old or broken one. 5, Especially designed fit for Mercury Optimax. Features: Our robust plastic housing helps protect the ignition coil from damage. Made of high quality metal and plastic material, lightweight and durable in use. Replacing OE numbers for reference: 300-879984T01 300-8M0077471. Original standard, direct replacement for your old or broken one. Especially designed fit for Mercury Optimax. Specification: Condition: 100% Brand New Material: Metal & Plastic Color: Black Ignition Coil Size: Approx. 91 * 72mm / 3.6 * 2.8in Manufacturer Part Number: 300-879984T01 300-8M0077471 Replace Part Number: 300-879984T01 300-8M0077471 339-879984A1 339-879984T00 8M0077471 879984T01 879984A1 300879984T01 3008M0077471 339879984A1 339879984T00 Placement on Vehicle: Rear, Lower Pin: 5 Quantity: 1 Package Weight: Approx. 428g / 15.1oz Fitment: This coil fits for Mercury engines 2004 to present model: for Mercury EFI 4-Stroke Models: 30/ 40/ 50/ 60 EFI for Mercury Optimax: 75/ 90/ 115/ 125/ 200/ 225/ 250 for Mercury Optimax Pro XS: 115 Pro/ 175 Pro/ 200 Pro/ 225 Pro/ 250 Pro/ for Mercury Optimax Racing: 225 XS/ 225 Sport XS/ 250XS/ 250 Sport XS/ 300XS for Mercury EFI 2-Stroke Models: 150 (2.5 EFI)/ 175 (2.5 EFI)/ 200 (2.5 EFI)/ 200 (3.0 EFI)/ 225 (3.0 EFI)/ 250 (3.0 EFI) for Mercury Racing EFI 2-Stroke: 225X/ 300X (The compatibility is just for reference. Please compare the part number with your original one before purchasing!) Package Included: 1 * Ignition Coil Note: 1. Please check OE number before purchasing. 2. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 3. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.