Sierra 18-28084 Spark Plug Wire Set for Mercury 30-40 HP EFI Outboard

The Sierra 18-28084 spark plug wire set is a high-quality replacement ignition wire set engineered specifically for Mercury Marine 30-40 HP EFI 4-stroke 3-cylinder outboard engines. This professional-grade wire set delivers reliable spark delivery to ensure optimal engine performance and smooth operation on the water.

Key Features:

• Set includes 3 spark plug wires, each measuring 9 inches in length
• 90-degree boots on each end for secure fitment and easy installation
• Durable rubber construction designed for marine environments
• Engineered to meet or exceed OEM specifications for reliable performance
• Direct replacement for Mercury Marine part numbers 84-821945T65, 84-821945T74, and 84-881908T

Compatibility:

• Fits Mercury 30-40 HP EFI 4-stroke (3-cylinder) outboard engines
• Also compatible with Mercury Race Outboard and Mercury Sport Jet applications
• Interchangeable with CDI 934-0002 and Mallory 9-28084

Sierra Marine is a trusted leader in aftermarket marine engine parts, offering products that cover every major engine brand with comprehensive customer satisfaction warranties. This spark plug wire set provides the quality and durability you need to keep your Mercury outboard running at peak performance.