Blue Ox BX88443 Heavy-Duty Manual Battery Disconnect Kit

Protect your towed vehicle's electrical system and eliminate battery drain during dinghy towing with the authentic Blue Ox BX88443 Heavy-Duty Manual Battery Disconnect Kit. Designed to replace the tedious and hazardous chore of repeatedly unbolting battery terminals with hand tools, this complete kit provides a simple, heavy-duty rotary switch to instantly isolate your 12V battery before towing.

Many modern late-model vehicles require the starting battery to be completely disconnected while flat-towing behind a motorhome to prevent deep parasitic battery discharge. The Blue Ox BX88443 delivers a permanent, professional, underhood solution engineered to handle high-demand electrical loads without voltage drop.

Key Features & Engineering Highlights:

• Instant Rotary Disconnect: Rotate the heavy-duty switch to the OFF position to completely isolate the battery circuit in seconds—no wrenches or terminal wear.
• High-Amp Continuous & Surge Capacity: Rated for 275 amps continuous duty and an impressive 1,250 amps cranking surge capability, making it fully compatible with gas and high cold-cranking amp diesel vehicles.
• Heavy-Gauge Marine-Grade Battery Cables: Includes two 24-inch, 2 AWG heavy-duty battery cables pre-terminated with heavy copper 3/8" and 1/2" ring terminal connectors.
• Complete Protective Hardware: Outfitted with 1/2" ID Flex Guard protective wire loom, heat-shrink tubing, powder-coated mounting bracket, and corrosion-resistant zinc-plated hardware.
• Versatile Vehicle Application: Works with all standard 12V automotive battery configurations. Can also serve as a security battery cut-off switch to deter vehicle theft and prevent parasitic drain during seasonal vehicle storage.
• Turnkey Professional Installation: Certified in-store installation available at Truck Guy Upfitters (510 W North 1st St, Seneca, SC 29678).

Specifications & Kit Contents:

• Manufacturer: Blue Ox
• Part Number: BX88443
• UPC: 798459097688
• Continuous Duty Rating: 275 Amps @ 12V DC
• Surge / Cranking Duty Rating: 1,250 Amps
• Cables: Dual 24-Inch, 2 AWG Heavy-Duty Battery Cables
• Included: Heavy-duty ON/OFF disconnect switch, switch mounting bracket (101-11002), 2x 24" wire loom, 3" heat-shrink tubing, Grade 5 mounting hardware, nylon lock nuts, and 6x nylon cable ties.

Note: If your towed vehicle utilizes dual starting batteries on the engine starting circuit (such as certain heavy-duty diesel trucks), one BX88443 kit is required per starting battery.