Sierra Spark Plug Wire Set 18-28082 for Mercury Outboard Engines

The Sierra 18-28082 Spark Plug Wire Set is a replacement ignition wire set built for Mercury outboard engines. It carries the high-voltage current from the ignition coil to the spark plug, and a worn or cracked wire is a common cause of misfires, hard starting, and rough idle in an outboard powerhead. This set uses a copper core for reliable electrical conductivity paired with a polyvinyl chloride (PVC) insulation jacket that resists heat, moisture, and the vibration exposure typical of an outboard engine compartment.

The set ships as a single count item (1 wire set) and is compact, with each packaged unit measuring 0.39 x 0.39 x 0.39 inches. It is designed for Mercury outboard applications and is a straightforward swap for a factory ignition wire that has degraded, cracked, or is arcing.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-28082
• Product Category: Mercury Outboard Spark Plug Wires
• Material: Copper (core), Polyvinyl Chloride (PVC) (insulation)
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• Number of Items: 1
• Unit Count: 1.0 Count
• Included Components: Spark Plug Wire Set
• Weight: 0.57 pounds
• UPC: 808282341411
• Warranty: Limited Warranty

Fitment

• Mercury outboard engines

Frequently Asked Questions

What is the Sierra 18-28082? The Sierra 18-28082 is a spark plug wire set built for Mercury outboard engines, carrying ignition voltage from the coil to the spark plug.

What is the wire set made of? The 18-28082 uses a copper core for conductivity with a polyvinyl chloride (PVC) insulation jacket to resist heat and moisture.

How many wires come in the 18-28082 set? The set is packaged as a single count item, listed as 1 wire set (Unit Count: 1.0 Count).

What are the dimensions of the 18-28082 wire set as packaged? The packaged item measures 0.39 x 0.39 x 0.39 inches.

How much does the Sierra 18-28082 weigh? It weighs 0.57 pounds.

What engines does the 18-28082 fit? The 18-28082 is categorized for Mercury outboard engines.

Is the Sierra 18-28082 a genuine Sierra part? Yes, 18-28082 is the Sierra manufacturer part number for this spark plug wire set, not a generic aftermarket substitute.

Does the 18-28082 come with a warranty? Yes, the Sierra 18-28082 is covered by a limited warranty.

What is the UPC for the Sierra 18-28082? The UPC for the Sierra 18-28082 spark plug wire set is 808282341411.

Why replace a spark plug wire like the 18-28082? A cracked, arcing, or degraded ignition wire causes misfires and hard starting; replacing it with the Sierra 18-28082 restores a reliable spark voltage path on Mercury outboard engines.