Mercury – Primer Bulb | Fuel System Component | Rubber Composite | 8M0061876

Overview

Every boater knows that the day goes smoother when your engine fires up without hesitation. There’s a simple comfort in squeezing a primer bulb and feeling that steady pulse of fuel heading toward the motor—no guessing, no struggling, just clean, reliable pressure. That’s exactly what the Mercury 8M0061876 Primer Bulb delivers. It’s one of those small but critical pieces that gives you confidence each time you head out, whether you’re easing away from the dock at sunrise or restarting after drifting along a quiet shoreline.

This primer bulb isn’t flashy, but it’s dependable in the way seasoned boaters appreciate. You press it, it works, and you’re on your way. That kind of trust becomes part of your routine on the water.

Key Features

• Designed for 5/16-inch (8 mm) inside-diameter Mercury and Quicksilver fuel lines
• Includes two durable hose clamps for secure installation
• Built with three layers of low-permeation rubber for strength and longevity
• Meets EPA-MERC-PB15 standards for modern marine fuel systems
• Compatible with ethanol-blended fuel, though ethanol use is not recommended
• Engineered to match Mercury Marine OEM performance expectations

Engine & Boat Compatibility

• Works with any Mercury or Quicksilver outboard using 5/16-inch fuel lines
• Ideal for:
  • Small fishing boats
  • Utility skiffs
  • Pontoon boats
  • Tenders and inflatables
  • Portable fuel tank systems
• Suitable for both two-stroke and four-stroke configurations

Performance & Practical Benefits

What you’ll notice first is the feel—firm enough for solid pressure, yet smooth and responsive. When you squeeze the bulb, it rebounds cleanly and keeps its shape, thanks to the triple-layer rubber construction. It doesn’t collapse under vacuum or stiffen in cooler weather, so your priming feels predictable from one outing to the next.

The bulb’s low-permeation design prevents fuel odor seepage and minimizes wear from harsh marine environments. On warm days, when cheaper bulbs soften or lose grip, this one stays steady. In colder months, it remains pliable so you’re not fighting with a stiff, unresponsive bulb.

Installation is simple: slide it onto your existing 5/16-inch line, tighten the clamps, and you’re ready. Once installed, it delivers a secure, airtight connection that keeps fuel flowing smoothly toward the engine. That smooth, steady flow translates to quicker starts, fewer stalls, and less frustration overall.

Why Buy OEM

Buying a genuine Mercury Marine part means you’re choosing reliability over guesswork. Mercury designs these primer bulbs specifically for marine environments—constant vibration, exposure to sunlight, fuel variation, and temperature swings.

• Built to last longer than generic aftermarket bulbs
• Reduced risk of cracking, leaking, or collapsing
• Perfectly sized for Mercury and Quicksilver fuel lines
• Helps protect your engine by ensuring clean, reliable priming
• A simple upgrade that saves time and reduces troubleshooting

When fellow boaters ask why OEM matters, this is a perfect example—it just works better and lasts longer.

FAQ

Q1: Which Mercury engines does this primer bulb fit?

Any Mercury or Quicksilver outboard using a 5/16-inch inside-diameter fuel line.

Q2: Why is this better than aftermarket bulbs?

It uses stronger rubber, lower permeation materials, and meets Mercury’s exact marine standards.

Q3: How can I be sure it fits my setup?

Check your fuel line size—if it’s 5/16 inch, this bulb is the correct match.

Q4: Can it be used in both saltwater and freshwater?

Absolutely. It’s designed for all marine environments.

Q5: Is installation difficult?

Not at all. With the included clamps, most boaters can install it in minutes.