Answering the search for reliable pontoon boat ignition switches, this guide highlights five dependable options that fit Mercury, Sierra, and common outboard control boxes. These switches are best for boaters seeking easy installation, push-to-choke functionality, and solid electrical conductivity in marine environments. The top picks cover a range of OEM-compatible part numbers, making it easier to replace worn ignition switches without rewiring. The buyers most likely to benefit are those upgrading aging panels, outfitting new pontoons, or replacing faulty starters after hard starts or key jamming.
Quick reference table of selected products:
| Product | Key Features | Best For |
|---|---|---|
| 87-88107A5 Boat Ignition Switch | Mercury outboards 1994+, easy, corrosion-resistant | |
| 87-17009A5 / 87-17009A2 Replacement Switch | 2 keys, 6 wires, 3-position, push-to-choke | Mercury/Mariner control boxes, plug-and-play |
| MIYIMORE 87-17009A2 / A5 Compatible Switch | 3-position OFF-RUN-START, 6 wires | Mercury outboards, reliable conductivity |
| Johnson/Evinrude Push-to-Choke Switch | Push to choke, 6 terminals | OMC inboard/outboard applications |
| SKARUMMER Mercury Compatibility Switch | 6-wire, 3-position, 2 keys | Mercury/Mariner control boxes, durable build |
87-88107A5 Boat Ignition Switch With 2 Keys
This switch is designed for Mercury outboard motors from 1994 onward. It uses a marine-grade glass-filled polyester housing and a non-conductive shell to reduce short circuits. It features a 6-wire setup and a push-to-choke function, offering corrosion protection in harsh marine environments. Best for Mercury owners needing a direct OEM-style replacement with reliable sealing and long life.
Best for: Mercury outboards with 6-wire control boxes seeking a ready-to-install replacement. Better for: replacing aging ignition hardware on 1994+ Mercury vessels. Choose this if: you want a marine-grade housing to resist corrosion and a simple plug-in upgrade. Caution: verify your exact OEM numbers (87-88107, 87-88107A5, 7-1155) match before purchasing.
87-17009A5 / 87-17009A2 Replacement Switch
These ignition switches are designed as direct replacements for Mercury outboard control boxes, featuring 2 keys, 6 wires, and a 3-position OFF-RUN-START mechanism. The build uses polyester and brass for durability and conductivity, with an internal seal to protect the lock mechanism. Best for: Mercury/Mariner setups needing plug-and-play operation with minimal wiring. Better for: side-mounted panels requiring up to 5/8 inch panel thickness. Caution: confirm compatibility with your OEM part numbers (87-17009A2, 87-17009A5, Sierra MP41070-series) before ordering.
MIYIMORE 87-17009A2 / 87-17009A5 Switch
The MIYIMORE switch is a 6-wire, 3-position (OFF-RUN-START) ignition key switch designed to replace Mercury outboard control boxes. It emphasizes high-quality polyester and brass construction with an internal seal and compatibility up to 5/8-inch panel thickness. Best for: Mercury owners needing a robust, easy-to-install alternative to OEM switches. Better for: ensuring reliable starting in marine conditions. Caution: verify model fitment against your Mercury OEM references to ensure an exact match.
Ignition Starter Switch For Johnson / Evinrude
This ignition switch targets OMC inboard/outboard applications with a push-to-choke feature and six terminals. It suits boaters seeking a universal option across Johnson and Evinrude setups, simplifying replacements when original components are hard to source. Best for: boats using OMC systems needing a compact, 6-terminal control. Better for: those who prefer a push-to-choke integration to simplify engine management. Caution: confirm your exact OEM numbers and panel thickness requirements before purchasing.
SKARUMMER Mercury Compatible Switch
The SKARUMMER switch is a 6-wire, 3-position replacement that matches Mercury outboard control boxes. It includes two keys and uses high-quality polyester with brass conductors for reliability. Best for: Mercury/Mariner models requiring a sturdy aftermarket ignition switch. Better for: installations that demand precise wiring alignment with OEM color codes. Caution: ensure the model fits your specific Mercury OEM references 87-17009A2 or 87-17009A5 before ordering.
Buying Guide: Key Purchase Considerations
What should you check before buying a pontoon boat ignition switch?
- Compatibility: Confirm the OEM part numbers (such as 87-88107, 87-17009A2, 87-17009A5, MP41070) match your Mercury, Sierra, or OMC control box.
- Wiring: Ensure the switch has 6 wires and a 3-position OFF-RUN-START for consistent operation with your panel.
- Construction: Look for marine-grade housing, corrosion resistance, and internal seals to withstand saltwater exposure.
- Function: Push-to-choke versus traditional choke—consider ease of starting in varying temperatures and conditions.
- Panel fit: Check maximum panel thickness (often up to 5/8 inch) for side-mounted controls.
FAQ
- Q: Will these switches work with all Mercury outboards?
A: They are designed to replace common Mercury switch configurations; always verify the exact OEM numbers for your model. - Q: What does push-to-choke mean?
A: It engages the choke automatically when starting, simplifying cold starts in some engines. - Q: Are these switches suitable for inboard and outboard applications?
A: Some models target OMC inboard/outboard systems; others are Mercury-specific, so check compatibility. - Q: Do these switches require special wiring knowledge?
A: Most are plug-and-play or plug-and-play-compatible; follow the included wiring color codes to avoid miswiring. - Q: How thick can the mounting panel be?
A: Many models support up to 5/8 inch panel thickness; verify your panel dimension before purchase. - Q: Can I replace my switch if I have a dual-key setup?
A: The listed models typically include 2 keys; ensure your replacement matches your existing key configuration.