Mercury – Warning Horn Kit | Piezo Alarm Upgrade | 816492A9
Overview
A warning horn is one of the simplest but most important pieces of onboard protection. The Mercury 816492A9 Warning Horn Kit gives your engine a clear, reliable audible alert when something needs attention—oil, temperature, or other key engine parameters. This kit uses the newer piezo-style horn, designed to work with later-model remote controls and harnesses, and brings modern reliability to engines that need a proper SmartCraft-compatible audible warning.
Key Features
Updated Piezo Horn – Modern high-clarity horn used on 1986-and-newer remote controls and harnesses.
Engine Alert Output – Provides audible alarms for engine protection systems.
V-6 Compatibility – Fits 2000 and newer Mercury/Mariner V-6 outboards.
High-Performance Coverage – Also fits MY2002+ 525–1200 HP Mercury Racing sterndrives.
Plug-In OEM Fit – Designed to match Mercury harness connectors for quick installation.
Durable Alarm Unit – Resistant to moisture, vibration, and heat in tight helm spaces.
Compatibility
2000+ Mercury V-6 outboards
2000+ Mariner V-6 outboards
2002+ Mercury Racing 525–1200 HP sterndrives
1986+ Mercury/Mariner remote controls and wiring harnesses
Performance & Practical Benefits
This horn gives you loud, unmistakable alerts when the engine detects a condition that needs attention. The piezo design provides a sharper, more reliable tone than older buzzer-style units, making it easier to hear through wind, engine noise, or open cockpits. Installation is straightforward, and once connected, the horn becomes a dependable part of your engine’s warning system, giving you peace of mind every time you start the motor.
Why Buy OEM
Critical alarms should never rely on off-brand components. Mercury’s OEM horn is built to the correct decibel output, wiring spec, and compatibility requirements for later-model controls and harnesses. It ensures warnings sound exactly when they should and avoids false alerts or silent failures common with non-OEM replacements.
FAQ
Q1: When should I replace a warning horn? If your engine alarms aren’t sounding, sound weak, or behave inconsistently, the horn is often the culprit.
Q2: Does this horn work on older controls? It’s intended for 1986-and-newer remote controls and harnesses.
Q3: Will it work on all V-6 outboards? It fits 2000 and newer Mercury/Mariner V-6 models.
Q4: Can this be used on Mercury Racing sterndrives? Yes—MY2002+ 525, 600, 700, 850, 1075, and 1200 HP models are supported.
Q5: Is installation difficult? No. It typically plugs directly into the control or harness connection point.
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