MarinePro 87-17009A5 Boat Ignition Switch — Push-to-Choke, 3-Position, 6-Wire, Mercury/Mariner Compatible

Overview

When you’re out on the water, dependable ignition control matters. The MarinePro 87-17009A5 boat ignition switch is designed as a direct replacement for Mercury and Mariner outboards, offering a familiar OFF-RUN-START sequence with a push-to-choke feature. The 6-wire harness is built to support reliable engagement, providing smooth transitions between all operating modes while you navigate harbors, bays, and open water.

This switch replaces a range of OEM part numbers, including 87-17009A5 and 87-17009A2, as well as Sierra MP41070 variants. It’s crafted to feel like the original in hand and in function, so you can focus on steering, rather than fiddling with controls.

Key Benefits and Features

• Mercury/Mariner compatibility: engineered for Mercury Outboard Remote Control Box with a 3-position OFF-RUN-START and a 6-wire system.
• Push-to-choke design: convenient choke control integrated into the ignition switch for easier cold starts.
• Direct replacement, easy install: factory-matching wire colors allow a plug-and-play swap with no splicing required.
• Durable, marine-grade construction: fiberglass housing and a premium copper lock cylinder resist corrosion in harsh conditions.
• Reliable performance: 6-wire configuration aligns with OEM wiring schemes for consistent operation.
• Ready-to-use package: ships with 1 ignition switch and 2 keys for immediate use.

Durability and Design Details

Designed for marine environments, this switch combines rugged materials with precise engineering. The fiberglass housing provides sturdy protection against water, salt, and humidity, while the copper lock cylinder enhances security and smooth operation over time. The 6-wire setup supports reliable ignition and choke control, helping you start and run the engine with confidence in varying weather and sea conditions.

Installation and Use

Installation focuses on ease and accuracy. With factory-colored wire harnesses, the swap mirrors your existing setup, reducing the risk of miswiring. Each unit is 100% tested before shipping to help ensure you receive a ready-to-install component that fits within minutes rather than hours.

What’s Included

• 1 x MarinePro ignition key switch
• 2 x keys

Note: This product is a replacement solution intended for users seeking an aftermarket option with Mercury Mariner compatibility. Always verify your OEM numbers and wiring configuration prior to purchase to ensure the best fit for your vessel’s control system.