Mercury – RL82C Replacement Spark Plugs (4-Pack) | Ignition Component | Nickel Alloy & Copper Core | Part Number 896329874

Overview

There’s something reassuring about turning the key and hearing your engine fire up with that clean, confident spark you expect. These Quicksilver RL82C-replacement spark plugs bring that feeling back to your 25 horsepower Lightning outboard. They’re small parts, sure but they shape every moment on the water. From the smooth burble as you idle out of the marina to the steady pull when you throttle up across open water, a reliable spark plug keeps your engine feeling alive, sharp, and ready for whatever the day brings.

Key Features

• OEM-quality spark plugs designed as replacements for SP# RL82C
• Nickel alloy electrodes for durability and corrosion resistance
• Copper core for strong conductivity and efficient heat removal
• Built and tested specifically for marine performance and long life
• Includes a full set of four spark plugs for complete multi-cylinder service

Engine & Boat Compatibility

• Fits Mercury 25 horsepower Lightning outboards (3-cylinder, serial 0E268781 and newer)
• Suitable for small fishing boats, aluminum skiffs, tiller-steer setups, pontoons, and lightweight runabouts
• Designed for engines that specify RL82C spark plugs
• Always confirm compatibility with your engine’s owner’s manual.

Performance & Practical Benefits.

You can feel the difference a fresh set of spark plugs makes. With these Quicksilver plugs installed, starting becomes easier fewer cranks, less hesitation, and cleaner ignition even after long periods of sitting. Once you’re on the water, the engine settles into a smoother, steadier idle, the kind that makes maneuvering around docks and tight channels feel calm and controlled.

As you throttle up, the copper core provides consistent conductivity, allowing the plug to fire with accuracy across the entire rpm range. That clean spark helps your engine burn fuel more efficiently, improving throttle response and helping reduce misfires that can rob power. The nickel alloy electrode holds up against corrosion and wear, especially in damp, salt-rich marine environments. Over long days of trolling, exploring, or running across open bays, these plugs maintain their integrity and keep performance feeling tight and predictable.

A complete four-pack ensures every cylinder fires evenly, giving your outboard a balanced, refined feel. Whether you're teaching someone to steer for the first time or chasing fish before sunrise, the difference in smoothness and reliability is something you’ll feel every time you take the helm.

Why Buy OEM

Engineers match spark plugs to specific combustion needs heat range, electrode design, firing temperature, and timing characteristics all matter. Aftermarket plugs may fit, but they often miss those deeper specifications. Quicksilver plugs are built to Mercury Marine standards, ensuring your outboard runs the way it was designed to. It’s a smart choice for boaters who want fewer surprises and more time enjoying the. water. Reliable starts, smoother idles, and a longer-lasting plug that’s the kind of real-world confidence OEM parts bring.

FAQ.

Q1: Which engines do these plugs fit?

They fit Mercury 25 horsepower Lightning three-cylinder outboards with serial number 0E268781 and newer.

Q2: Why choose these over aftermarket spark plugs?

They match Mercury’s OEM specifications, providing proper heat range, spark stability, and corrosion resistance.

Q3: How can I confirm they’re the correct plugs?

Check your owner’s manual if your engine calls for RL82C or equivalent, part number 896329874 is correct.

Q4: Can these be used in saltwater and freshwater?

Yes, the nickel alloy and copper core materials are designed to withstand marine environments.

Q5: Are they easy to install?

Absolutely. Most boaters can replace them with a standard spark plug socket.