Garmin Split Collar 11mm Connector

Installing marine electronics on your boat shouldn't mean compromising the hull's integrity or spending hours patching up drill holes. The Garmin Split Collar 11mm Connector steps in as a smart, hassle-free solution for routing cables cleanly and securely. Designed specifically for boaters who value precision and durability, this black 11mm split connector lets you guide wires from devices like fishfinders and chartplotters through the vessel's surface without the mess or risk of oversized openings.

Why Boaters Rely on This Split Connector for Seamless Installations

Picture this: you're mounting your Garmin EchoMap CHIRP unit—models like the 73cv, 73sv, 74cv, or 74sv—and need to run power, transducer, or network cables from inside the console to the deck. Traditional grommets demand perfect alignment and large cuts that invite water ingress or weaken fiberglass. This split collar changes the game by opening up like a clamshell, allowing you to thread cables first, snap it shut around them, and mount it into a precise 11mm hole. The result? A watertight seal that protects against splashes, corrosion, and vibration from rough seas.

Built from rugged, UV-resistant materials, it withstands the harsh marine environment—salt spray, constant moisture, and temperature swings—while maintaining a low-profile, professional look. No more ugly zip ties or makeshift solutions that fail over time. It's an essential for DIY boaters, professional installers, and anyone upgrading their navigation setup.

Key Advantages Over Standard Cable Routing Methods

• Minimal Hull Intrusion: Requires only an 11mm hole, preserving structural strength and aesthetics compared to larger pass-throughs.
• Easy Retrofit: Perfect as a replacement for worn-out connectors, sliding over existing cables without disconnection.
• Versatile Fit: Accommodates single or bundled cables up to 11mm diameter, ideal for transducer leads, NMEA 2000 backbone, or power lines.
• Secure and Reliable: Compression design grips cables firmly, preventing chafing and pull-out during heavy trolling or trailering.
• Quick Setup: Installs in under five minutes with basic tools—no special adhesives or sealants needed.

Pro Tips for Optimal Use in Your Vessel

To maximize longevity, position the collar in low-stress areas away from sharp edges or high-heat sources like engines. Pre-drill with a step bit for a clean 11mm hole, deburr edges to avoid cable damage, and test the seal by spraying water post-install. For multi-cable runs, use heat-shrink tubing on wires beforehand to add strain relief. Pair it with Garmin's marine-grade wiring kits for a bulletproof system that handles everything from weekend fishing trips to offshore adventures.

Boat owners report fewer electrical gremlins and easier troubleshooting thanks to this organized routing. It's not just a connector—it's peace of mind on the water, backed by Garmin's reputation for innovation in outdoor and marine tech.