CDI Power Pack Switch Box For Mercury Mariner Outboard 2Cylinder 20HP 332-4911A2 Specifications: Condition: 100% Brand New Color: Black Features: Made of high-quality materials, more durable. Highly matching the original equipment. Rugged and durable. Easy to install and reliable to use. Fitment: Fit for 1972-1977 20hp 2 cylinder outboards that use one of the following part numbers only: For Mercury/Quicksilver # 332-4911A2 For Sierra #18-5786 For CDI Electronics #114-4911 Note: Please be sure to check your part or model number to ensure this is the correct switch box for your unit. Package Included: 1pcs CDI Power Pack Switch Box