Engineered Marine Products 84-28021 Marine Ignition Wire Set

The Engineered Marine Products (EMP) 84-28021 is a marine-grade ignition wire set (spark plug wire set) engineered as a direct OEM replacement for MerCruiser and Mercury Marine inboard and sterndrive engines. EMP, a division of Mercury Marine, manufactures these wire sets to the same exacting standards as the original factory components, ensuring a precise fit and reliable ignition performance on the water.

Key Features:

• OEM-quality construction engineered to meet or exceed original Mercury Marine specifications
• Marine-grade silicone jacketing and boots provide superior resistance to heat, moisture, and the harsh marine environment
• Low-resistance conductors deliver consistent, full-voltage spark for reliable engine starting and smooth performance
• RFI/EMI suppression design protects sensitive onboard electronics from ignition interference
• Corrosion-resistant terminals ensure long-lasting conductivity in saltwater and freshwater applications
• Pre-cut wire lengths for a direct, hassle-free installation — no trimming required
• Manufactured by Engineered Marine Products (EMP), a Mercury Marine brand

Replacing worn or cracked spark plug wires is a critical part of routine marine engine maintenance. The EMP 84-28021 ignition wire set restores proper spark energy delivery, helping prevent misfires, hard starting, and rough idle. Always verify fitment using your engine's model and serial number before ordering.