Mercury – Omega Gauge Nut | 85 mm | 11-8M0204697

Overview

The Mercury Omega Gauge Nut (11-8M0204697) is the correct OEM nut for securing large 85 mm (3-3/8") Mercury SmartCraft gauges and MercMonitors. It threads smoothly onto the back of your Omega-style gauge, keeping it tight, secure, and free of vibration.

It’s built from durable, marine-grade material that won’t crack or strip, giving you a snug fit that lasts season after season.

Key Features

• Fits 85 mm (3-3/8") Mercury SmartCraft and Omega gauges
• OEM replacement nut – same part used in factory installations
• Marine-grade plastic resists corrosion, vibration, and UV damage
• Threads cleanly for a solid, rattle-free fit
• Designed to hold large gauges tight without distortion

Compatibility

• Fits: Mercury 85 mm (3-3/8") Omega-style gauges and MercMonitors

Performance & Practical Benefits

This nut locks your gauge in place so it doesn’t twist or shift while running. It’s a small but critical part for a clean, professional installation — and it’s built to hold up where cheap hardware fails. If you’re mounting or replacing a Mercury 85 mm gauge, this is the right nut for the job.

Why Buy OEM

Mercury hardware is made for life on the water — it fits right, threads right, and lasts. Using genuine OEM parts means your gauges stay tight and protected, without worrying about stripped threads or cracked plastic.

FAQ

Q1: What gauges does this fit?
It fits 85 mm (3-3/8") Mercury SmartCraft or Omega gauges, including MercMonitors.

Q2: Is it an OEM part?
Yes — it’s a genuine Mercury Marine nut, built to factory specs.

Q3: What material is it made from?
A marine-grade composite that resists UV and corrosion.

Q4: Is it reusable?
Yes — it can be removed and reinstalled without losing its grip.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.