Mercury – Starter Motor Assembly Kit | Electrical System | Marine-Grade Construction | 879150A85

Overview

There’s a special kind of relief that washes over you when your engine fires instantly with that clean, confident spin. It sets the tone for the entire day on the water. A reliable starter isn’t something you think about often—but when it falters, you feel it in your gut. This Mercury Marine starter motor assembly kit brings that trust back. It’s built for boaters who want their outboard to respond immediately, whether you’re pushing off the dock at first light or restarting after drifting a quiet shoreline. With this kit installed, you’ll turn the key with assurance every single time.

Key Features

• Complete starter motor assembly kit including motor, lead wires, ground wires, connectors, and hardware
• Engineered for smooth, consistent cranking power
• Marine-grade materials designed to withstand corrosion and repeated heat cycling
• Direct replacement for the original Mercury starter motor assembly
• Built for stable electrical flow and long-term reliability

Engine & Boat Compatibility

• Fits Mercury and Mariner 75–115 horsepower 1.7 liter four-stroke EFI outboards (serial numbers 1B580804–1B759587)
• Also fits 80–100 horsepower European four-stroke outboards
• Common on center consoles, bay boats, pontoons, aluminum fishing boats, and multi-purpose family craft

Performance & Practical Benefits

The strength of a starter becomes really clear when you’re out in open water with a tide pushing or a storm building. With this OEM kit, you get a smooth and steady crank that feels solid every time. There’s no hesitation, no grinding, no inconsistent spin—just a tight, confident turnover that tells you your engine is ready. Because the internal components are matched precisely to Mercury’s electrical system, the starter draws the right amount of power and protects the rest of your wiring from strain. In day-to-day use, you’ll notice quicker starts, easier warm restarts, and less battery load overall. The kit also installs intuitively, with each wire and connector designed to seat securely without the frustration that aftermarket parts can create.

Why Buy OEM

When it comes to starter motors, fit and durability matter more than anything else. Aftermarket options often cut corners: weaker brushes, lower-quality windings, or connectors that don’t lock into Mercury harnesses properly. This Mercury Marine part is built for the specific torque, load, and electrical requirements of these outboards. That means fewer starting issues, fewer surprises, and fewer times wondering whether your motor will crank when you need it most. It’s a dependable, real-world investment in your time on the water.

FAQ

Q1: Which engines does this starter kit fit?

It fits Mercury and Mariner 75–115 horsepower 1.7 liter four-stroke EFI models and 80–100 horsepower European models.

Q2: What separates it from aftermarket starters?

Stronger components, tighter tolerances, and wiring built to match Mercury’s harness design.

Q3: How can I confirm this is correct for my setup?

Match your horsepower, engine type, and serial number to the kit’s specifications.

Q4: Safe for saltwater use?

Yes—its corrosion-resistant materials and sealed components handle either environment.

Q5: Is installation straightforward?

Very. The included hardware and matched connectors make it a clean, intuitive replacement.