--- product_id: 119146833 title: "Spark Plug LFR6A 6668 (Pack of 8) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm" brand: "ngk" price: "3446035₫" currency: VND in_stock: true reviews_count: 8 category: "Ngk" url: https://www.desertcart.vn/products/119146833-spark-plug-lfr6a-6668-pack-of-8-watercraft-fx-fzr store_origin: VN region: Vietnam --- # V-cut electrode for rapid spark 26.5mm reach, perfect fit Marine-grade durability Spark Plug LFR6A 6668 (Pack of 8) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm **Brand:** ngk **Price:** 3446035₫ **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your ride with NGK’s precision spark power! ## Quick Answers - **What is this?** Spark Plug LFR6A 6668 (Pack of 8) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm by ngk - **How much does it cost?** 3446035₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/119146833-spark-plug-lfr6a-6668-pack-of-8-watercraft-fx-fzr) ## Best For - ngk enthusiasts ## Why This Product - Trusted ngk brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Value Pack of 8:** Stock up with a full set for annual maintenance and unbeatable price vs dealership. - • **Optimal Spark Gap:** 0.9mm gap engineered for consistent ignition and smoother engine runs. - • **Perfect Marine Fit:** 26.5mm reach and 16mm hex size ensure seamless compatibility with Yamaha 1.8L watercraft engines. - • **Precision V-Power Ignition:** Unique v-cut electrode boosts spark speed and ignitability for peak engine performance. - • **Resistor Value for Reliability:** 5K Ohm resistor reduces electrical noise, protecting sensitive electronics onboard. ## Overview The NGK LFR6A 6668 Spark Plug pack of 8 is a marine-grade ignition solution designed specifically for Yamaha 1.8L watercraft engines. Featuring a unique V-cut electrode for faster spark development, a precise 0.9mm gap, and a 5K Ohm resistor to minimize electrical interference, these plugs deliver reliable, smooth engine performance. With a 26.5mm reach and 16mm hex size, they offer a direct fit replacement that outperforms dealership options at a better price, making them essential for annual maintenance. ## Description Genuine 8 pack NGK V-Power 6668 Spark Plug Review: Great product! - Work great on my Yamaha boat! Review: Highly recommended - The best plugs available. Use in a Yamaha 200 ## Features - NGK V-Power plugs feature a unique v-cut in the center electrode that directs the spark to the edge of the electrode, helping the spark develop more rapidly, increasing ignitability and reducing quenching - NGK Spark Plugs - Brand new ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07PDYZNPW | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #38,118 in Automotive ( See Top 100 in Automotive ) #267 in Automotive Replacement Spark Plugs | | Brand | NGK | | Brand Name | NGK | | Compatible with Vehicle Type | Car, Truck | | Core Material | Copper | | Customer Reviews | 4.9 out of 5 stars 131 Reviews | | Gap Size | 0.9 Millimeters | | Included Components | 6668 | | Item Weight | 0.96 Pounds | | Manufacturer | NGK | | Manufacturer Part Number | 6668 | | Manufacturer Warranty Description | Includes manufacturer provided warranty | | Model Number | 6668 | | Number of Items | 1 | | Thread Size | 14 millimeters | | Top Material Type | Nickel | | UPC | 087295195758 | | Unit Count | 1.0 Count | | Vehicle Service Type | Car, Truck | ## Product Details - **Brand:** NGK - **Core Material:** Copper - **Thread Size:** 14 millimeters - **Top Material Type:** Nickel - **Vehicle Service Type:** Car, Truck ## Images ![Spark Plug LFR6A 6668 (Pack of 8) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm - Image 1](https://m.media-amazon.com/images/I/61Gza71HK2L.jpg) ![Spark Plug LFR6A 6668 (Pack of 8) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm - Image 2](https://m.media-amazon.com/images/I/61rrUIncREL.jpg) ![Spark Plug LFR6A 6668 (Pack of 8) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm - Image 3](https://m.media-amazon.com/images/I/51oSINM70hL.jpg) ![Spark Plug LFR6A 6668 (Pack of 8) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm - Image 4](https://m.media-amazon.com/images/I/51raall2kiL.jpg) ![Spark Plug LFR6A 6668 (Pack of 8) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm - Image 5](https://m.media-amazon.com/images/I/51B9a6K+biL.jpg) ## Questions & Answers **Q: Compare ngk lfr6a and ngk lfr6a-11. are they interchangeable ? is gap the only difference and is so can be changed easy enough ?** A: The major difference between these plugs is the LRF6A comes pre-gapped at .036" and the LFR6A-11 is pre-gapped at .044" Technically speaking you should use the correct one of these as spec'd for your application as over adjusting the gap to compensate is not recommended. **Q: does this fit the 212 limited s?** A: Yes as long as you have the 1.8s ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product! *by A***W on February 10, 2026* Work great on my Yamaha boat! ### ⭐⭐⭐⭐⭐ Highly recommended *by J***N on May 10, 2026* The best plugs available. Use in a Yamaha 200 ### ⭐⭐⭐⭐⭐ Boat runs like new! *by B***E on January 13, 2025* 2017 Yamaha 212x was beginning to have some stumbling problems after owning it for a couple of years, and one of the engines conked out a couple of times before leaving the dock. I had no maintenance history on the board but it's likely that the plugs were original. Replaced them (30-minute job to take care of both 1.8L engine) and it's running like new again. You're supposed to replace the plugs every couple of seasons, and will be doing it with the recommended NGK plugs here going forward. ## Frequently Bought Together - NGK Spark Plug LFR6A 6668 (Pack of 8) Watercraft FX FZR FZS VX VXR VXS Reach 26.5mm Hex Size 16mm Gap 0.9mm Resistor Value 5K Ohm - Yamaha New OEM WaveRunner Boat Oil Gallon 10W-40 4W WATERCRAFT LUB-10W40-WV-04 - OEM Yamaha Oil Filter Element Assy; Oil Cleaner 69J-13440-04-00; 69J-13440-03-00, 69J134400400 --- ## 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.vn/products/119146833-spark-plug-lfr6a-6668-pack-of-8-watercraft-fx-fzr](https://www.desertcart.vn/products/119146833-spark-plug-lfr6a-6668-pack-of-8-watercraft-fx-fzr) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-23*