Sierra 18-28083 Spark Plug Wire for Mercury V6 EFI/DFI/DTS Outboard

The Sierra 18-28083 is a single spark plug wire built for Mercury V6 EFI/DFI/DTS outboard engines. It carries the ignition signal from the distributor end to the spark plug end using a copper conductor, chosen for consistent electrical conductivity under the vibration and heat cycling typical of an outboard engine compartment. The wire is insulated with polyvinyl chloride (PVC), a durable jacket material that resists abrasion, moisture, and heat exposure over repeated duty cycles.

Each end of the wire terminates in a boot-style connector, which seats securely over the distributor terminal and the spark plug to maintain a tight electrical connection and help keep out moisture and salt air. The wire is compact, measuring 2.81 x 7.13 x 10.44 inches, making it easy to route through tight outboard engine bays without excess slack. It is sold as a single wire (not a multi-wire set), so it is intended for replacing one damaged or worn spark plug wire on a Mercury V6 EFI/DFI/DTS outboard rather than a full harness.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-28083
• Fitment: Mercury V6 EFI/DFI/DTS outboard
• Material: Copper, Polyvinyl Chloride (PVC)
• Connector Type: Boot
• Number of Wires: 1
• Item Dimensions: 2.81 x 7.13 x 10.44 inches
• Weight: 0.1 pounds
• UPC: 808282341428
• Unit Count: 1

Fitment

• Mercury V6 EFI/DFI/DTS outboard engines

Frequently Asked Questions

What engines does the Sierra 18-28083 spark plug wire fit? The Sierra 18-28083 is built for Mercury V6 EFI/DFI/DTS outboard engines.

Is 18-28083 a full wire set or a single wire? It is a single spark plug wire, not a multi-wire set, so it is meant to replace one wire on a Mercury V6 EFI/DFI/DTS outboard.

What material is the 18-28083 wire made from? Copper conductor wrapped in polyvinyl chloride (PVC) insulation makes up the Sierra 18-28083, giving it durability against heat and moisture in the engine compartment.

What type of connectors does this wire use? Boot-style connectors are fitted at both ends of the 18-28083, providing a secure seal at the distributor and spark plug terminals.

What are the dimensions of the 18-28083 spark plug wire? The Sierra 18-28083 measures 2.81 x 7.13 x 10.44 inches as packaged.

How much does the 18-28083 weigh? This spark plug wire weighs 0.1 pounds.

Is the Sierra 18-28083 a genuine Sierra part? Yes, 18-28083 is the Sierra manufacturer part number for this spark plug wire, not a generic aftermarket substitute.

What is included when I order this product? The package includes one Sierra 18-28083 spark plug wire with boot connectors on each end; unit count is 1.

Can I use the 18-28083 wire on a different Mercury outboard model? The 18-28083 is designated for Mercury V6 EFI/DFI/DTS outboards; compatibility with other Mercury outboard models is not stated for this part.

How is 18-28083 different from Sierra's multi-wire ignition sets? Unlike Sierra ignition wire sets that bundle four or more wires for a full harness replacement, the 18-28083 is a single wire intended for replacing just one spark plug wire on a Mercury V6 EFI/DFI/DTS outboard.

What connects to the distributor end of the 18-28083? A boot connector terminates the distributor end of the Sierra 18-28083, matching the boot connector at the spark plug end.