Mercury – Quicksilver 827858Q NGK DPR6EA-9 Standard Spark Plug | Sold Individually | 827858Q

Overview

The Quicksilver 827858Q NGK DPR6EA-9 Standard Spark Plug gives your Mercury outboard reliable ignition, smooth idle, and strong performance under load. Each plug is factory-pre-gapped to match your engine’s specifications and built with NGK’s trusted copper-core design for efficient heat dissipation and consistent firing.

This OEM plug meets Mercury Marine’s standards for fit and performance, ensuring dependable starts and maximum power whether you’re cruising, trolling, or running wide open.

Key Features

• Purpose: Provides consistent ignition and optimal engine performance across all RPM ranges.
• Material: Built with a copper core for superior heat transfer and a Trivalent metal plating for corrosion resistance.
• Performance: Pre-gapped to Mercury factory specifications for reliable firing, smooth operation, and reduced fouling.
• Design: Features a threaded terminal for secure connection and easier installation or removal.
• Ease of Use / Install: Ready to install out of the box — no adjustment needed; fits directly per your engine’s recommended plug type.

Engine & Boat Compatibility

• Fits a wide range of Mercury and Mariner 2-stroke and 4-stroke outboards (check owner’s manual for compatibility).
• Common on fishing boats, pontoons, and sport outboards requiring NGK DPR6EA-9 plugs.

Performance & Real-World Benefits

The 827858Q spark plug delivers efficient combustion and strong spark performance in marine conditions. The copper core helps manage engine heat for better durability, while the Trivalent coating prevents corrosion and seizing — even after months on the water.

Replacing old or fouled plugs restores crisp throttle response, better idle, and improved fuel efficiency. It’s a small change that makes your engine feel brand new again.

Why Choose OEM

Mercury’s OEM-approved NGK plugs are tested specifically for their engines to guarantee the correct heat range, gap, and resistance. Generic plugs can cause misfires, premature wear, or poor fuel burn.

A genuine Quicksilver/NGK spark plug ensures your outboard runs exactly as designed — powerful, efficient, and dependable every time you turn the key.

FAQ

Q1: What engines fit this spark plug?
A: It’s compatible with many Mercury and Mariner outboards; check your owner’s manual to confirm fitment.

Q2: Is the plug pre-gapped?
A: Yes. It’s pre-gapped to Mercury factory specifications.

Q3: What makes it different from other plugs?
A: The copper core improves spark efficiency, and the Trivalent plating resists corrosion in harsh marine environments.

Q4: Do I need any special tools to install it?
A: Just a standard spark plug wrench and torque per manufacturer guidelines.

Q5: Why OEM instead of aftermarket?
A: OEM NGK plugs match Mercury’s exact specs, ensuring perfect combustion and easy starting.