This Sierra wire set replaces OEM part number 84-813715A8. Check your engine's parts manual or existing wire set for this part number. Consult the Sierra catalog for complete application information and compatibility details for your specific engine model.

Marine ignition wires feature enhanced insulation to resist moisture and salt corrosion, special compounds that withstand marine fuel vapors, and construction designed for the vibration and temperature extremes of marine engines. Standard automotive wires will fail prematurely in marine environments.

Replace ignition wires if you notice cracking, corrosion, carbon tracking, or electrical resistance outside specifications. Symptoms include rough idle, misfiring, hard starting, or visible damage to wire insulation. Regular inspection during tune-ups is recommended.

While basic mechanical skills can handle wire replacement, proper routing and connection are critical for performance and safety. Professional installation ensures correct cylinder identification, proper clearances from heat sources, and compliance with marine electrical standards.

Common causes include exposure to excess heat, improper routing causing chafing, moisture intrusion, corrosion from salt spray, and using non-marine grade wires. Proper installation and using marine-specific components like this Sierra wire set prevents premature failure.