NFSpeeding Marine Spark Plug Wire Set 4pc 6" — High-Performance Corrosion-Resistant Leads

NFSpeeding's 4-piece 6" marine spark plug wire set is a premium replacement kit engineered to restore reliable ignition for Evinrude, OMC and Johnson outboards.

Whether you're prepping a fishing boat for the season or replacing degraded leads during routine maintenance, this compact 4-wire kit gives you corrosion-resistant, high-temperature wiring that matches original equipment fit and function. The set replaces part numbers such as 18-8816-1 and ZF478V and is sized for tight engine bays where short, durable wires are needed.

How does this wire set improve cold or intermittent starts?

New, low-resistance leads reduce voltage loss and help ensure a stronger, more consistent spark to the plugs. That steadier transfer of energy cuts down on missed sparks and rough idles common with aged or brittle wires.

• Stainless-steel conductor for dependable conductivity
• Silicone jacket resists heat and remains flexible in cold
• Precise 6" length for correct routing and minimal signal loss

Will these wires fit my Evinrude/OMC/Johnson outboard?

The kit is designed as a direct-style replacement for common Evinrude, OMC and Johnson models that use short 6" leads. Many customers replace OEM part numbers like 18-8816-1 and ZF478V with this set for an accurate fit.

• Four wires included for a complete bank replacement
• Correct connectors and end boots to match factory routing
• Compact length minimizes clutter in crowded engine compartments

What materials and durability features protect these wires in marine conditions?

Materials were chosen to withstand marine exposure: silicone insulation resists high temperatures and remains flexible, while stainless-steel internals reduce corrosion from salt and humidity. The construction extends service life compared with older or OEM wires that have degraded.

• Corrosion-resistant stainless-steel cores
• High-grade silicone jacket for heat and moisture resistance
• Factory-tested for consistent performance and longevity

How simple is installation and what maintenance is recommended?

Installation is straightforward: remove old leads, route each 6" wire to the correct terminal, and seat the boots securely. Periodic visual checks and cleaning of terminals will keep the ignition system healthy and help avoid surprises on the water.

• Drop-in replacement design — no special tools required
• Seat boots fully to ensure a solid electrical connection
• Inspect for cracks, hardening or corrosion each season

Who is this for: Boaters, marine technicians and do-it-yourselfers who run Evinrude, OMC or Johnson outboards and need a short, high-quality set of spark plug wires. Ideal for engine tune-ups, winterization prep, or replacing worn leads to restore reliable starts and smoother running without modifying existing components.