Mercury – Helm MPR 2-Pin Weather Cap | GT280 Connector Protection | 86-8M0054244

Overview

Joystick-equipped boats depend on clean electrical connections, and the Helm MPR plug is no exception. The Mercury 86-8M0054244 Weather Cap protects the open 2-pin GT280 male connector used in Zeus, Axius, and Joystick Piloting for Outboards installations. It keeps the plug dry, sealed, and ready for service, preventing the moisture and debris that can create hard-to-trace faults later on.

Key Features

• GT280 Weather Cap – Covers and protects the 2-pin male GT280 connector.
• Joystick System Use – Intended for Zeus, Axius, and JPO helm installations.
• Helm MPR Compatible – Designed for the Helm MPR harness connection (8M2021476).
• Clean Electrical Protection – Helps prevent corrosion and unwanted contact inside the connector.
• Marine-Ready Build – Holds up against vibration, spray, and long-term helm exposure.
• Simple Installation – Pushes on securely with no tools required.

Compatibility

• 2-pin GT280 connectors
• Helm MPR harness 8M2021476
• Zeus joystick systems
• Axius joystick systems
• Joystick Piloting for Outboards (JPO)

Performance & Practical Benefits

This cap keeps the Helm MPR connector protected when not in use, guarding against water, salt, and dirt that can cause joystick communication faults. With the plug sealed, the system stays cleaner and more stable, reducing the chances of nuisance alerts or intermittent behavior. It installs in seconds and stays tight even in high-vibration helm environments.

Why Buy OEM

Joystick systems rely on precise, stable communication. Mercury’s OEM weather cap matches the GT280 connector perfectly and seals the plug the way the system expects. Aftermarket caps often fit loosely or fail to keep moisture out, leading to corrosion or signal noise. The OEM cap provides long-term protection with a proper factory fit.

FAQ

Q1: When should this weather cap be used?
Any time the 2-pin Helm MPR connector is not in use, the cap protects it from moisture and debris.

Q2: Does this affect joystick operation?
No. It simply protects an unused connector and does not interfere with normal system function.

Q3: Is this only for joystick boats?
It’s designed specifically for Zeus, Axius, and JPO systems using the Helm MPR harness.

Q4: Can it handle saltwater spray?
Yes. The materials and fit are built for long-term marine exposure.

Q5: Does it need to be removed for service?
Only if the connector is needed. Otherwise, it stays in place full-time.