JL Audio Maxi Fuse Distribution Block, 4-way (XD-FDBU-4) - 010-13484-00 (90462)

JL Audio XD-MFBW-MAXI-F Water-Resistant Master MAXI™ Fuse Block is a compact, marine-grade master fuse block designed to protect the main power cable feeding an amplifier or power distribution system. This version includes a MAXI™ blade fuse pre-installed, enabling immediate integration into automotive, marine, or powersports systems.

The block features JL’s OmniSert™ captured-wire receptacles that accept 8 AWG to 4 AWG power wire without additional sleeves. Forged and machined brass construction with marine-grade plating provides excellent current transfer and corrosion resistance. A high-temperature polycarbonate base and hinged cover add durability and water resistance for demanding outdoor environments.

Key Features

• Master MAXI™ fuse block with pre-installed MAXI™ blade fuse
• Designed for main power protection of high-current amplifier systems
• Water-resistant hinged cover for marine & powersports environments
• OmniSert™ wire receptacles accept 8–4 AWG power wire
• Forged & machined brass construction with marine-grade plating
• High-temp polycarbonate base and cover

Technical Specifications

Ideal Applications

• Main power protection for a single high-current amplifier
• Marine and powersports installs needing water-resistant power components
• Battery-side fuse protection for compact custom systems

What’s Included

• JL Audio XD-MFBW-MAXI-F water-resistant master MAXI™ fuse block
• Pre-installed MAXI™ blade fuse
• Protective hinged cover
• Hardware (as supplied by JL Audio)

Why Buy From MCOR Automotive

• Authorized JL Audio dealer with extensive power & marine install experience
• Guidance on fuse sizing, wiring, and layout for multi-amp systems
• Post-sale support for basic installation and troubleshooting