Mercury – Next-Gen ERC Extension Harness Kit (Quad) | 5-Foot Extension | 98-8M0173755

Overview
This five-foot extension gives a quad-engine Next-Gen ERC setup a little more breathing room when the stock harness just doesn’t reach comfortably. With four engines feeding into the system, the wiring path can get cramped fast, and this extension keeps you from forcing tight bends or pulling the harness too hard. It lets the run sit in a cleaner, more natural line so everything feels calmer at the helm. It’s a small piece that makes a big, busy layout easier to deal with.

Key Features
• Five-Foot Extension – Adds practical slack for tight routing spots.
• Quad-Engine ERC Use – Built for four-engine Next-Gen ERC systems.
• OEM Connectors – Factory ends that snap in firmly.
• Easier Routing – Helps avoid sharp corners and stressed wiring.
• Steady Control Path – Keeps throttle and shift signals consistent.

Engine & Boat Compatibility
• Next-Gen ERC
• Quad engine
• Digital rigging layouts

Performance & Practical Benefits
On a quad-engine boat, a little extra length makes a big difference. The harness can follow a smoother path, and the controls feel more natural because nothing is being kinked or stretched. It also keeps the rigging bay from turning into a tight squeeze, which makes service work later a whole lot easier. It’s one of those small add-ons that pays off every time you open the rigging hatch.

Why Buy OEM
OEM harnesses handle vibration, heat, and salt spray without loosening up or causing odd glitches. The connectors fit the way Mercury designed them to, so you’re not chasing down random signal issues. It’s solid wiring built to last.

FAQ
Q1: How do I know I need this extension?
A: If your ERC harness for a quad-engine setup barely reaches or forces a sharp bend, this five-footer usually fixes it.

Q2: Any setup needed?
A: No—just plug it in.

Q3: Is it okay for saltwater use?
A: Yes. Rinse now and then and check the connectors.

Q4: Any install tips?
A: Give the harness a relaxed route with gentle bends.

Q5: What are early signs of wear?
A: Sluggish controls, intermittent signals, or spots where the jacket is rubbing thin.