Mercury – Spark Plug Wire Kit | Ignition Wire Set | Marine-Grade Construction | 899329A09

Overview

There’s a certain comfort that comes from knowing your big-block MerCruiser fires strong every time you turn the key. With an engine as powerful as the 8.2L, you can feel instantly when the ignition system is healthy — the smooth startup, the steady idle, the way the boat responds the moment you bring the throttle forward. The Quicksilver 899329A09 Spark Plug Wire Kit keeps that confidence alive. It’s built for engines that work hard, whether you’re loaded down for a weekend run, cruising a long stretch of lake, or pulling your crew on a wakeboard. Good spark means good power, and this kit keeps it flowing clean.

Key Features

• Complete set of 8 red spark plug wires
• Pre-formed boots for precise fit at the plug end
• Tailored wire lengths ensure correct routing on 8.2L MerCruiser engines
• Engineered for durability in high-heat marine engine compartments
• Designed for long-term ignition efficiency and consistent spark delivery

Engine & Boat Compatibility

• Fits 8.2L MerCruiser sterndrive and inboard engines (2010 and newer)
• Works with:
  • Bravo sterndrive-powered sport boats
  • Large bowriders and deck boats
  • Performance cruisers
  • Cabin cruisers and weekenders
• Compatible with ignition systems requiring OEM spark plug wire sets

Performance & Practical Benefits

Ignition wires seem simple, but in a marine engine bay they’re under constant stress — heat buildup, vibration, moisture, and tight routing all take a toll. Over time, wires can break down internally or begin leaking voltage, which leads to misfires, sluggish acceleration, and reduced fuel efficiency. The Quicksilver 899329A09 kit solves those problems with wires engineered specifically for your 8.2L engine’s layout.

Each wire is cut to the exact length Mercury designed for the engine. This matters more than most boaters realize — correct length reduces stress at connection points, prevents rubbing or chafing, and ensures each wire reaches the plug cleanly without looping or stretching. The boots grip firmly, holding their seal even through the vibration of rough water or long, high-RPM runs.

Inside each wire, high-quality insulation and core materials help maintain a strong, stable spark across all eight cylinders. That translates directly into smoother idle, stronger hole shot, and more reliable performance under load. When towing, cruising, or maneuvering at the dock, the engine feels responsive and balanced — exactly how a big-block MerCruiser should feel.

Because these wires are made for the marine environment, they resist moisture intrusion, thermal cracking, and corrosion far better than automotive-style wires. That durability means fewer ignition-related surprises and a longer service life.

Why Buy OEM

When it comes to ignition systems, fit and reliability matter more than anything. Aftermarket wires may be cheaper, but they often use lower-grade insulation, inconsistent wire cores, or generic lengths that don’t match Mercury’s routing. That can lead to premature wear, poor spark quality, or misfires that mimic larger engine problems. OEM Quicksilver wires are engineered for the exact heat load, routing angles, and performance expectations of the 8.2L MerCruiser. They fit right, last longer, and keep your engine performing the way it was designed.

FAQ

Q1: Which engines does this wire kit fit?

It fits 8.2L MerCruiser sterndrive and inboard engines, model year 2010 and newer.

Q2: Are the wires marine-rated?

Yes — they’re designed for heat, moisture, and vibration found in real marine conditions.

Q3: How do I confirm this is the correct kit?

Match your engine model and year to part number 899329A09 or verify in the owner’s manual.

Q4: Do the wires come pre-cut to length?

Yes. Each wire is sized to reach the correct plug location cleanly.

Q5: Can these wires improve engine performance?

Fresh OEM wires can reduce misfires, smooth idle, and improve spark consistency.