EMP Ignition Wire Set 84-28080 for 6-Cylinder Mercury Outboards, Replaces Sierra 18-28080

The EMP 84-28080 Ignition Wire Set is a complete replacement spark plug and coil wire set built for 6-cylinder Mercury outboard engines. It is designed as a direct replacement for Sierra 18-28080, giving boat owners and marine technicians a straightforward way to restore reliable ignition performance without hunting down individual wire lengths or connectors. Ignition wires carry the high-voltage signal from the coil to each spark plug, and worn, cracked, or corroded wires are a common cause of misfires, hard starting, rough idle, and lost power on outboard engines. Replacing the full set at once, rather than patching individual wires, ensures consistent resistance and spark delivery across all cylinders.

This set is sold as a matched kit sized for 6-cylinder Mercury outboard applications, so all wires and connectors are included for a complete ignition wire replacement in one purchase. It is intended for boat owners performing routine ignition maintenance or a full tune-up, as well as marine technicians servicing Mercury outboards that use the Sierra 18-28080 wire set.

Specifications

• Brand: EMP
• Manufacturer Part Number: 84-28080
• Product Category: Mercury Outboard Spark Plug Wires
• Number of Cylinders: 6
• UPC: 840080469997
• Weight: 0.65 pounds

Fitment

• 6-cylinder Mercury outboard engines

Replaces (OEM)

• 18-28080

Frequently Asked Questions

What engines does the EMP 84-28080 ignition wire set fit? The EMP 84-28080 is built for 6-cylinder Mercury outboard engines, matching the cylinder count and wire routing of the Sierra 18-28080 set it replaces.

Is the EMP 84-28080 the same as Sierra 18-28080? Yes, EMP part number 84-28080 is a direct replacement for Sierra 18-28080, covering the same 6-cylinder Mercury outboard application.

How many wires come in this set? The 84-28080 is sold as a complete ignition wire set sized for a 6-cylinder engine, so it includes the full run of spark plug and coil wires needed for that cylinder count.

What does the ignition wire set weigh? The EMP 84-28080 ignition wire set weighs 0.65 pounds.

Why replace all the ignition wires instead of just the damaged one? Replacing the full 84-28080 set at once keeps resistance and spark delivery consistent across all 6 cylinders, which single-wire patch replacements cannot guarantee.

What symptoms indicate my Mercury outboard needs new ignition wires? Misfires, hard starting, rough idle, and a noticeable loss of power are common signs that a 6-cylinder Mercury outboard's ignition wires, such as the 84-28080 set, need replacement.

Can I use the EMP 84-28080 as a genuine Sierra replacement? The 84-28080 is manufactured as a functional equivalent to Sierra 18-28080 and is intended to replace that part on applicable 6-cylinder Mercury outboards.

Does the 84-28080 include both coil and spark plug wires? Yes, the EMP 84-28080 ignition wire set is configured as a full set for 6-cylinder Mercury outboards, covering the coil and spark plug wire runs referenced by Sierra 18-28080.

Is professional installation required for this ignition wire set? Ignition wire sets like the 84-28080 are commonly installed by boat owners performing a tune-up or by a marine technician; no specialized tools beyond basic hand tools are typically needed.

What is the UPC for the EMP 84-28080 ignition wire set? The EMP 84-28080 ignition wire set carries UPC 840080469997.