--- product_id: 369959277 title: "Boat Ignition Switch with Key Replacement for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position 6 Wire Connectors - Replace Mercury Ignition Switch 87-17009A2 87-17009A5" brand: "skarummer" price: "£52.13" currency: GBP in_stock: true category: "Skarummer" url: https://www.desertcart.co.uk/products/369959277-boat-ignition-switch-with-key-replacement-for-mercury-mariner-outboard store_origin: GB region: United Kingdom --- # 3-position OFF-RUN-START switch Includes 2 precision-cut keys 6-wire plug & play connector Boat Ignition Switch with Key Replacement for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position 6 Wire Connectors - Replace Mercury Ignition Switch 87-17009A2 87-17009A5 **Brand:** skarummer **Price:** £52.13 **Availability:** ✅ In Stock ## Summary > ⚓ Ignite your voyage with flawless starts every time! ## Quick Answers - **What is this?** Boat Ignition Switch with Key Replacement for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position 6 Wire Connectors - Replace Mercury Ignition Switch 87-17009A2 87-17009A5 by skarummer - **How much does it cost?** £52.13 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/369959277-boat-ignition-switch-with-key-replacement-for-mercury-mariner-outboard) ## Best For - skarummer enthusiasts ## Why This Product - Trusted skarummer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Peace of Mind Warranty:** Backed by a 24-month warranty and responsive support for zero downtime on your water adventures. - • **Plug & Play Installation:** Color-coded wires match factory standards—no splicing, no hassle, just instant fit. - • **Wide Mercury Compatibility:** Direct replacement for Mercury 87-17009A2/87-17009A5 and Sierra MP41070 series—fit with confidence. - • **Seamless 3-Position Control:** Effortlessly toggle between OFF, RUN, and START modes for precise engine management. - • **Durable Brass & Polyester Build:** Engineered with premium materials ensuring long-lasting safety and superior conductivity. ## Overview The SKARUMMER Boat Ignition Switch is a high-quality aftermarket replacement designed for Mercury Mariner Outboard motors. Featuring a 3-position OFF-RUN-START switch, 6-wire plug & play connectors, and durable brass and polyester construction, it ensures reliable engine starts and easy installation. Compatible with key Mercury and Sierra models, it includes two keys and comes with a 24-month warranty for dependable performance on the water. ## Description Features:PROFESSIONAL DESIGN3 Position OFF - RUN- STAR and 6 wires for push to choke.HIGH QUALITYMade of high performance polyester and high quality brass, which provides safety, durability and excellent electrical conductivity.EASY INSTALLATIONColors on switch wires match factory color codes. Direct replacement, a simple plug & play with no wire splicing.Specifications:Condition: 100% Brand NewMaterial: Brass + PlasticColor: BlackReplacing OE Number for Reference: 87-17009A2 87-17009A5 MP41070-2 MP41070-1 MP41070Package List: 1 * Ignition Key Switch + 2 * Keys Size: 57 * 37mm / 2.3 * 1.5inPackage Weight: 3.99 OuncesFitment: For Mercury Mariner Outboard Remote Control BoxNote:1. This is a high quality aftermarket product but not genuine.2. It is advisable to check the existing Part Number before placing an order. ## Features - REPLACEMENT IGNITION STARTER SWITCHES - An ignition switch, starter switch or start switch is a switch in the control system of a motor vehicle that activates the main electrical systems for the vehicle. If you have to wiggle the key hard or the boat won't start when the key is turned, it means you need to replace a new engine starter ignition key switch for your boat. - PROFESSIONAL DESIGN - 3 Position OFF - RUN- STAR and 6 wires for push to choke. This Boat Engine Ignition Switch made of high performance polyester and high quality brass, which provides safety, durability and excellent electrical conductivity. You can buy it with great confidence. - COMPATIBILITY - This Ignition Key Switch replacement for most Mercury Outboard Control Box, replace OE number for reference: Mercury 87-17009A2 87-17009A5, Sierra MP41070-2 MP41070-1 MP41070. Please kindly check the fitment to ensure this will fit your model before ordering. - EASY INSTALLATION - Colors on switch wires match factory color codes. Direct replacement, a simple plug & play with no wire splicing. Meets or exceeds OEM standards, 100% d before shipping. - 24-MONTH WARRANTY - Order from SKARUMMER, we offer 24 month warranty. If you have any other questions on our Boat Engine Ignition Key Switch, please contact us at the first time, We are always here to support you. We provide free service of REPLACEMENT or REFUND, you can buy it with confidence. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0933LB56Z | | Brand Name | SKARUMMER | | Circuit Type | 3-way | | Connector Type | Plug In | | Contact Material | Brass | | Contact Type | Normally Open | | Control Method | Remote | | Controller Type | Push Button | | Customer Reviews | 4.3 4.3 out of 5 stars (521) | | International Protection Rating | IP00 | | Item Weight | 0.1 Kilograms | | Manufacturer | SKARUMMER | | Material Type | Brass, Plastic | | Model | 87-17009A2 | | Mounting Type | Plug-In Mount | | Number of Positions | 6 | | Operation Mode | Off | | Part Number | 87-17009A2 87-17009A5 | | Switch Type | Ignition Switch | | Terminal | Spade Or Blade | | UPC | 760668658707 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** SKARUMMER - **Connector type:** Plug In - **Contact type:** Normally Open - **Operation mode:** Off - **Switch type:** Ignition Switch ## Images ![Boat Ignition Switch with Key Replacement for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position 6 Wire Connectors - Replace Mercury Ignition Switch 87-17009A2 87-17009A5 - Image 1](https://m.media-amazon.com/images/I/41r40mQVKeS.jpg) ![Boat Ignition Switch with Key Replacement for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position 6 Wire Connectors - Replace Mercury Ignition Switch 87-17009A2 87-17009A5 - Image 2](https://m.media-amazon.com/images/I/41R-eNGiolS.jpg) ![Boat Ignition Switch with Key Replacement for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position 6 Wire Connectors - Replace Mercury Ignition Switch 87-17009A2 87-17009A5 - Image 3](https://m.media-amazon.com/images/I/51BzAiuO6cS.jpg) ![Boat Ignition Switch with Key Replacement for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position 6 Wire Connectors - Replace Mercury Ignition Switch 87-17009A2 87-17009A5 - Image 4](https://m.media-amazon.com/images/I/41ZwkNxgQ8S.jpg) ![Boat Ignition Switch with Key Replacement for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position 6 Wire Connectors - Replace Mercury Ignition Switch 87-17009A2 87-17009A5 - Image 5](https://m.media-amazon.com/images/I/416PuC52lJS.jpg) ## Frequently Bought Together - Boat Ignition Switch with Key Replacement for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position 6 Wire Connectors - Replace Mercury Ignition Switch 87-17009A2 87-17009A5 - Outboard 17179T1 84-17179T 1 Cable Main Wire Harness for Mercury Marine MerCruiser Quicksilver 881170A15 Remote Control Box, 8 Pins, 15ft/4.57m Length --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/369959277-boat-ignition-switch-with-key-replacement-for-mercury-mariner-outboard](https://www.desertcart.co.uk/products/369959277-boat-ignition-switch-with-key-replacement-for-mercury-mariner-outboard) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-08-30*