Mercury – Primer Bulb with Hose Clamps | Fuel System Components | Black Rubber | 8M0052975

Overview

Every boater knows the little things matter, especially when you’re getting ready to push off from the dock. A primer bulb may not look like much, but when it works the way it should, the whole day starts smoother. The Mercury 8M0052975 Primer Bulb gives you that quiet confidence—one squeeze, fuel moves exactly the way it’s supposed to, and your engine wakes up without hesitation. It’s the kind of reliability you feel in your gut, the same feeling you get when the water is glassy at sunrise and everything just falls into place.

Key Features

• Designed for 1/4 inch (6.35 mm) inside diameter fuel lines
• Built with a three-layer low-permeation rubber construction for longevity
• EPA-MERC-PB15 compliant for modern marine fuel system requirements
• Flexible and fully functional in temperatures down to +5°F (-15°C)
• Includes two hose clamps for a secure, leak-free installation
• Part number 8M0052975

Engine & Boat Compatibility

• Works with Mercury and Quicksilver fuel systems using 1/4 inch fuel lines
• Suitable for portable outboards, small to mid-size fishing boats, dinghies, jon boats, and lightweight runabouts
• Compatible with a wide range of two-stroke and four-stroke outboards when paired with proper fittings
• Can be used with select other brands when matched with correct connectors

Performance & Practical Benefits

Nothing derails a day on the water like an engine that won’t prime. This bulb gives you a tight, responsive squeeze and moves fuel with a steady, predictable feel. No stiffness, no collapsing, no guessing if fuel made it to the engine. Just a smooth, secure flow every time you prime.

The triple-layer rubber body resists cracking and fuel permeation, even in harsh temperatures, and the included clamps help ensure the connection points stay locked in. It’s engineered to hold up to regular use—not just the occasional weekend squeeze. Even after seasons of exposure, the bulb stays flexible and dependable. And because it’s designed specifically for Mercury fuel systems, it fits neatly in line without fighting you during installation.

Why Buy OEM

A primer bulb seems simple, but it’s one of those parts you want done right. An aftermarket bulb might look similar, but small flaws—loose check valves, poor rubber quality, sloppy fittings—can leave you stalled when you least expect it. With this genuine Mercury Marine part, you know every piece is engineered for clean, consistent fuel delivery. It lasts longer, seals tighter, and just works. When you’re miles from the ramp, that peace of mind is worth its weight in gold.

FAQ

Q1: Which Mercury engines does this primer bulb fit?

It fits any Mercury or Quicksilver fuel system using a 1/4 inch inside diameter fuel line.

Q2: What makes it better than aftermarket bulbs?

It’s built with a three-layer rubber design, Mercury-tested check valves, and precise fitment that cheaper bulbs often miss.

Q3: How do I know if it’s the right replacement?

If your fuel line is 1/4 inch ID, this is the correct Mercury Marine part. Just confirm your connector type.

Q4: Can it be used in saltwater and freshwater?

Absolutely—environment has no impact, as long as it’s installed above the waterline.

Q5: Is installation simple?

Yes. Slide it into the fuel line, tighten the included clamps, and you’re ready to prime.