--- product_id: 225307699 title: "13686Q NGK BU8H Semi-Surface Discharge Design Spark Plug, 1-Pack" brand: "quicksilver" price: "VT3441" currency: VUV in_stock: true reviews_count: 10 category: "Quicksilver" url: https://www.desertcart.vu/products/225307699-13686q-ngk-bu8h-semi-surface-discharge-design-spark-plug-1 store_origin: VU region: Vanuatu --- # Semi-surface discharge for cleaner ignition Fits standard spark plug sockets for easy swap Trivalent metal plating resists corrosion & seizing 13686Q NGK BU8H Semi-Surface Discharge Design Spark Plug, 1-Pack **Brand:** quicksilver **Price:** VT3441 **Availability:** ✅ In Stock ## Summary > ⚡ Power your marine engine with precision and durability — don’t let fouled plugs slow you down! ## Quick Answers - **What is this?** 13686Q NGK BU8H Semi-Surface Discharge Design Spark Plug, 1-Pack by quicksilver - **How much does it cost?** VT3441 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/225307699-13686q-ngk-bu8h-semi-surface-discharge-design-spark-plug-1) ## Best For - quicksilver enthusiasts ## Why This Product - Trusted quicksilver brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted Legacy:** Backed by Quicksilver’s 65+ years of marine industry expertise, delivering OEM-quality parts for peace of mind. - • **Ignite with Precision:** Semi-surface discharge design ensures optimal spark and prevents carbon buildup, keeping your engine firing flawlessly. - • **Effortless Maintenance:** Compatible with common spark plug sockets, making replacements quick and hassle-free. - • **Marine-Grade Durability:** Trivalent metal plating offers superior anti-corrosion protection, perfect for harsh marine environments. - • **Engineered for Performance:** Pure alumina silicate ceramic insulator enhances strength and heat transfer, reducing breakage and boosting reliability. ## Overview The Quicksilver 13686Q NGK BU8H spark plug features a semi-surface discharge design that improves ignition and prevents carbon fouling. Its trivalent metal plating provides exceptional corrosion resistance in marine environments, while the pure alumina silicate ceramic insulator ensures durability and efficient heat transfer. Designed for easy installation with standard sockets, this spark plug is an OEM-quality replacement trusted by professionals for reliable performance in Mercury outboard engines. ## Description The NGK BU8H semi-surface gap plugs have small side electrode not requiring gap adjustment pre-gap and are nearly immune to pre-ignition (knocking). Use only the spark plug listed in your engine owner’s manual. Using the wrong plug can reducing optimum performance, reduce fuel economy or cause damage to your engine. The NGK pure alumina silicate ceramic insulator provides superior strength, reduces breakage and better heat transfer. The Ribbed Suppressor Seal extends resistance and prevents spark “flash over” and misfire plus the triple seal helps prevent leakage. The Quicksilver brand is the leader in delivering uncompromising engine oils, parts and accessories to the marine industry for over 65 years. Quicksilver is the premier supplier of Mercury Marine Original Equipment replacement engine parts, oils, and accessories, but also works to serve all Original Equipment brands in the marine and powersports industries. It has earned a loyal following by providing the highest quality products that are tested through some of the most rigorous environments and testing procedures. No aftermarket company comes close to the level of research and design as Quicksilver; buying Quicksilver is buying performance, protection and peace of mind. Review: Spark plug - Worked well for my mower at a good cost! Highly recommend Review: Great Plugs! - Great Price! Fast Shipping! Works Great! ## Features - NGK BU8H surface gap plugs feature a semi-surface discharge design to improve ignition and burn off any carbon before it can build up to foul the plug - Check your engine owner’s manual for the correct spark plug and use only the plug as recommended by your engine’s original equipment manufacturer - NGK Trivalent metal plating also provides superior anti-corrosion in the marine environment and anti-seizing for easier removal - Spark plugs are easy to change with common spark plug sockets - Spark plugs are easy to change with common spark plug sockets. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00N6D6MWI | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #29,670 in Automotive ( See Top 100 in Automotive ) #210 in Automotive Replacement Spark Plugs | | Brand Name | Quicksilver | | Compatible with Vehicle Type | Mercury outboard engines | | Core Material | Copper | | Customer Reviews | 4.6 4.6 out of 5 stars (323) | | Global Trade Identification Number | 00087295176498 | | Included Components | Spark Plug (1) | | Manufacturer | Quicksilver | | Manufacturer Part Number | 13686Q | | Model Number | 13686Q | | OEM Equivalent Part Number | 13686Q | | Thread Size | M14x1.5 | | Top Material Type | Metal | | UPC | 087295176498 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Quicksilver - **Core Material:** Copper - **Thread Size:** M14x1.5 - **Top Material Type:** Metal - **Vehicle Service Type:** Mercury outboard engines ## Images ![13686Q NGK BU8H Semi-Surface Discharge Design Spark Plug, 1-Pack - Image 1](https://m.media-amazon.com/images/I/81K9exMCVIL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Spark plug *by J***P on August 1, 2025* Worked well for my mower at a good cost! Highly recommend ### ⭐⭐⭐⭐⭐ Great Plugs! *by A***R on December 6, 2024* Great Price! Fast Shipping! Works Great! ### ⭐⭐⭐⭐⭐ Perfect replacements *by J***. on April 6, 2026* Good ## Frequently Bought Together - Quicksilver 13686Q NGK BU8H Semi-Surface Discharge Design Spark Plug, 1-Pack - Quicksilver 816296Q2 Marine Engine in-Line Fuel Filter with Barbs for 5/16" (8 mm) Fuel Lines - Quicksilver 858064Q01 High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser Sterndrives, 32 oz --- ## 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.vu/products/225307699-13686q-ngk-bu8h-semi-surface-discharge-design-spark-plug-1](https://www.desertcart.vu/products/225307699-13686q-ngk-bu8h-semi-surface-discharge-design-spark-plug-1) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-02*