JL Audio MMP-1-BK Source Unit Adaptor Plate is a marine-grade mounting adapter that allows installation of JL Audio MediaMaster source units into larger existing openings. It provides a secure, corrosion-resistant panel mount for compatible units such as the MM105 and MM100s. The adapter plate is constructed from machined aluminum with a durable black anodized finish and includes the necessary hardware and gasket for a watertight fit. Ideal for marine and powersports audio installations requiring a clean, professional mounting solution. Key Features Mounting adapter plate for JL Audio MediaMaster source units Compatible with JL Audio MM105 and MM100s models Marine-grade machined aluminum construction Black anodized finish resists UV and corrosion Includes mounting hardware and full-surface gasket Installation Notes Install the plate to the mounting surface and secure the MediaMaster source unit per JL Audio installation guidelines. Ensure the panel opening dimensions are appropriate for the intended source unit before installation. Follow all manufacturer instructions for a secure, sealed fit. What’s Included JL Audio MMP-1-BK Source Unit Adapter Plate Hardware kit (screws and gasket) Identifiers & Packaging Garmin PN 010-13855-00 JL Legacy PN 99919 MPN MMP-1-BK Sold As Each Why Buy From MCOR Automotive Authorized JL Audio dealer with expert install support Accurate listings with verified product data Trusted for marine and powersports audio integrations Fitment & Installation Help Need help confirming fitment or installation parts? Use our Fit Guide or contact us through the chat button before ordering. Authorized Retailer & Warranty MCOR Automotive is an authorized JL Audio / Garmin retailer. Products purchased from MCOR include applicable manufacturer warranty coverage when installed and used according to manufacturer guidelines.
