Mercury ECU Harness Coupling 19049-1 Nut – OEM Replacement
 
This original Mercury ECU Harness Coupling 19049-1 Nut is a direct replacement for Mercury Racing, Mercury Marine, and Mariner 150 HP, 175 XRI, 200 HP, 225 Pro Max, 260 ROS, 280 EFI, 300 Drag, S3000, and F1 outboard engines. It is specifically designed for Mercury 2.0, 2.4, and 2.5 Liter 2-Stroke V6 outboards.
 
Compatible with Multiple Mercury Marine Racing Mariner Outboard Models this essential ECU connector nut fits both:
 
✅ XRi & Laser (front-injected EFI outboards)
✅ Race ROS (side-injected EFI outboards)
 
Key Features & Benefits:
 
OEM Quality & Perfect Fit – Ensures a secure connection for all 16-pin EFI ECU Harnesses.
Durable & Long-Lasting – Replaces the original nut, which can become brittle and break over time.
Easy Installation – Simply snap into place for a firm and stable ECU connection.
UL Rated & RoHS Compliant – Meets industry standards for safety and reliability.
 
Mercury OEM Part Numbers Compatible with this Nut: 98866, 98866A27, 98866A26, 98866A14, 98866A25, 98866A9, 454-9602
 
Replace and Installation Instructions:
 
1️⃣ Remove the old nut and check the orientation of the new nut.
2️⃣ Align it evenly and snap it into place.
3️⃣ Once secured, the nut remains attached until intentionally removed.
 
Keep a spare on hand for quick replacement and to ensure a stable ECU connection.
 
What’s Included? One (1) Mercury ECU Ring-Coupling Nut – OEM Part Number 19049 or 190491
 
Need Assistance? Contact Mike Hill for expert support: 📞 Phone: 714-697-1716 or 📧 Email: mike@buckshotracing77.com