JL Audio XD-MFBW-MAXI Water-Resistant Master MAXI™ Fuse Block is a compact, marine-grade master fuse block designed to protect the main power cable feeding your amplifier or distribution system. It uses a genuine MAXI™ blade fuse and accepts a wide range of cable sizes, making it ideal for high-current automotive and marine audio installs. OmniSert™ captured-wire receptacles allow secure terminations from 8 AWG up to 4 AWG power wire without separate adapter sleeves. Forged and machined brass construction with marine-grade plating ensures excellent conductivity and long-term corrosion resistance, while the high-temperature polycarbonate base and hinged cover provide insulation and protection in harsh environments. Key Features Water-resistant Master MAXI™ fuse block for main power protection Designed for high-current amplifier or system power feeds OmniSert™ captured-wire receptacles accept 8 AWG–4 AWG power wire Forged & machined brass with marine-grade plating High-temperature polycarbonate base and hinged protective cover Uses a single MAXI™ blade fuse (sold separately) Fuse can be removed/installed without removing the cover (service-friendly design) Technical Specifications Model XD-MFBW-MAXI Water-Resistant Master MAXI™ Fuse Block Garmin PN 010-13485-00 JL Legacy PN 90469 UPC 699440904698 Wire Size Compatibility 8 AWG to 4 AWG power wire (OmniSert™ receptacles) Fuse Type MAXI™ blade fuse (1 required, sold separately) Construction Forged & machined brass, marine-grade plated Base / Cover High-temperature polycarbonate, water-resistant hinged cover Approx. Shipping Weight ~1.0 lb (packaged) Ideal Applications Main power protection for a single high-current amplifier Marine and powersports systems where water resistance is critical Custom installs needing a compact, clean master fuse location near the battery What’s Included JL Audio XD-MFBW-MAXI water-resistant master MAXI™ fuse block Protective cover and base (pre-assembled) Mounting hardware (as supplied by JL Audio) Why Buy From MCOR Automotive Authorized JL Audio dealer with deep experience in high-current power wiring Guidance on fuse sizing, cable selection, and safe routing for multi-amp systems Post-sale support for basic installation and troubleshooting questions 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.
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