Feature: 1. Fitment: This is a replacement part of the original CDI power pack, perfect replacement for Mariner Ouboard 20 HP 2 CYLINDER engine 1972‑1977. 2. OE Number: Replacing manufacturer part number for reference is 332‑4911A2, replacement cdi electronics 114‑4911 and replacement for sierra 18‑5786. 3. Function: Engine power pack can be used to replace the original old damaged CDI power pack, plug and play, can improve ignition start performance. 4. Premium Material: Made of premium ABS plastic and aluminum alloy, this power pack is high temperature resistant, rustproof, designed for use in a marine environment. 5. High Quality: The manufacturing conforms to the standard specification, strictly follows the factory quality control, power pack can be used for a long time. Specification: Item Type: CDI Power Pack Material: Aluminum alloy + ABS Replacement OE: 332-4911A2 Replacement CDI Electronics OE: 114-4911 Replacement for Sierra OE: 18-5786 Application: This is a replacement part of the original CDI Power Pack, the shape and function are in line with or will exceed the original CDI Power Pack, can be used to replace the original old damaged CDI Power Pack, plug and play, easy installation, improve ignition start performance Fitment: Replacement for Mariner Ouboard 20 HP 2 CYLINDER 1972-1977. Package List: 1 x CDI Power Pack Note: 1. Please double check the part number of your item, matching information is for reference only.2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!