Mercury – Quicksilver Relay Assembly | Electrical System | Marine-Grade Construction | 882751A04

Overview

Every boater knows the feeling of turning the key and waiting for that familiar hum — that moment when the engine wakes up and you instantly know the day is going to go right. Reliable electrical parts make that moment possible, and this Mercury Marine part is one of those quiet heroes that keeps your whole system breathing steady. A dependable relay is something you rarely think about when it works, but you absolutely notice when it does not.

This relay assembly brings a sense of calm to the helm. It just does its job, day after day, letting you enjoy the simple rhythm of the water instead of worrying about what is happening inside your engine compartment.

Key Features

• Designed to control critical electrical functions within the engine system
• Marine-grade relay built for long-term durability and dependable switching
• Protected housing helps shield internal components from moisture and vibration
• Compact design allows clean installation in tight engine compartments
• Installs easily using common shop tools

Engine & Boat Compatibility

• Fits select Mercury FourStroke outboards from thirty to three hundred horsepower in both four- and six-cylinder designs
• Compatible with Racing, Verado, Pro Verado, EFI, and Sci engine families
• Works with Zeus Joystick systems, including Joystick Piloting designs one and two
• Commonly installed on center consoles, large pontoons, offshore fishing boats, high-performance craft, and joystick-controlled vessels

Performance & Practical Benefits

A relay may be small, but its presence is felt every time you fire up the engine, trim the motor, or rely on any electrical action that needs a clean, solid signal. With this Mercury Marine part installed, those operations feel tight and responsive. There is no hesitation, no flicker, no clicking that makes you pause and wonder. It simply delivers steady, smooth performance the way a well-built marine relay should.

The fit is precise, and the connectors lock into place with that satisfying, secure feeling that tells you it is seated correctly. Once installed, it stands up to constant vibration, long days in the sun, and the wet, salty environment that challenges every electrical component on a boat. It is the kind of part you install once and trust for seasons.

For anyone who has dealt with electrical gremlins offshore — the sudden trim failure, the unexpected stall, the moment when a switch refuses to respond — the value of a dependable relay becomes crystal clear. This one helps prevent those headaches before they ever get a chance to start.

Why Buy OEM

Electrical components are not the place to cut corners. With part number 882751A04, you are getting a relay designed specifically for Mercury engines and joystick systems. It matches the original specifications perfectly, which means no surprises, no rewiring, and no trial-and-error testing.

Aftermarket relays may look similar, but they often lack the internal protection, marine durability, or exact switching characteristics your engine expects. Choosing a genuine Mercury Marine part ensures long-term reliability and keeps your electrical system performing the way it should. If a fellow boater asked for advice, this is the kind of part I would tell them to stick with — the right fit, the right design, and the right choice for avoiding headaches on the water.

FAQ

Q1: Which engines does the Quicksilver Relay Assembly fit?

It fits select Mercury FourStroke outboards from thirty to three hundred horsepower, along with Racing, Verado, Pro Verado, EFI, Sci, and Zeus Joystick systems.

Q2: What makes this relay different from aftermarket options?

The internal build quality and switching reliability are noticeably better in OEM parts. This relay is engineered for the exact electrical demands of Mercury engines.

Q3: How do I know if this is the right replacement?

Verify your part number or check your owner’s manual. If your engine falls within the listed families, this is likely the correct Mercury Marine part.

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

Yes. Its sealed, marine-grade construction is designed for harsh environments in either type of water.

Q5: Is installation straightforward?

Most boat owners can install it quickly using basic tools. The connectors are designed for a simple, secure fit.