--- product_id: 1744788 title: "ACDelco Specialty MR43T (19157985) Marine Spark Plug (Pack of 1)" brand: "acdelco" price: "$12.45" currency: USD in_stock: true reviews_count: 13 category: "Ac Delco" url: https://www.desertcart.us/products/1744788-acdelco-specialty-mr43t-19157985-marine-spark-plug-pack-of-1 store_origin: US region: United States of America --- # Pre-gapped for optimal ignition Copper-core electrode for superior heat transfer Specifically engineered for marine engines ACDelco Specialty MR43T (19157985) Marine Spark Plug (Pack of 1) **Brand:** acdelco **Price:** $12.45 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your marine engine’s potential with ACDelco’s spark plug power! ## Quick Answers - **What is this?** ACDelco Specialty MR43T (19157985) Marine Spark Plug (Pack of 1) by acdelco - **How much does it cost?** $12.45 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/1744788-acdelco-specialty-mr43t-19157985-marine-spark-plug-pack-of-1) ## Best For - acdelco enthusiasts ## Why This Product - Trusted acdelco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ribbed Suppressor Seal:** Minimizes misfires and spark flashover for smooth, consistent power - • **Marine-Grade Durability:** Built to withstand harsh watercraft conditions for dependable performance - • **Copper-Core Heat Mastery:** Enhanced heat transfer reduces fouling and boosts spark reliability - • **Hot-Tip Insulator Technology:** Fires hotter and faster to extend electrode life and engine longevity - • **Precision Pre-Gapped Performance:** Ready to install with factory-set gap for peak engine efficiency ## Overview The ACDelco Specialty MR43T marine spark plug is a precision-engineered ignition component designed specifically for watercraft engines. Featuring a copper-core electrode and ribbed suppressor seal, it ensures superior heat transfer, reduces misfires, and promotes longer electrode life. Pre-gapped for optimal performance, this spark plug delivers reliable starts and efficient fuel use, making it a trusted choice for marine enthusiasts seeking durable, high-quality engine parts. ## Description MR43T spark plugs come pre-gapped as specified by your engine manufacturer. 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. Spark plugs are easy to change with common spark plug sockets. The AC Delco Ribbed Suppressor Seal extends resistance and prevents spark “flash over” and misfire. They feature a copper-core center electrode that helps provide improved heat transfer to the tip, giving you the reliability you're looking for while improving its resistance to low-speed carbon fouling. The AC Delco exclusive Hot-tip insulator heats fast and fires hot to promote longer electrode life for miles of dependable performance. Review: High Quality - Works good, not surprised. ACDelco quality. Review: Good buy - Worked great and came as promised ## Features - Made in Mexico - Package dimension :2.29 cm x 2.54 cm x 8.38 cm - Product type : SPARK PLUG - Package weight : 0.06 kg ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0016HNPNU | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #216,346 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #263 in Lawn Mower Spark Plugs #1,825 in Automotive Replacement Spark Plugs | | Brand | ACDelco | | Brand Name | ACDelco | | Compatible with Vehicle Type | Watercraft | | Core Material | Copper | | Customer Reviews | 4.7 out of 5 stars 1,138 Reviews | | Global Trade Identification Number | 00808709617204, 40707773188338 | | Included Components | Spark Plug (1) | | Item Type Name | Spark Plug | | Item Weight | 1.44 ounces | | Manufacturer | Quicksilver | | Manufacturer Part Number | 19157985 | | Model Number | 898264001 | | OEM Equivalent Part Number | 19157985 | | Thread Size | 14mm | | Top Material Type | Nickel | | UPC | 612520577247 808709617204 036666100716 707773188330 | | Unit Count | 1.0 Count | | Vehicle Service Type | Watercraft | ## Product Details - **Brand:** Quicksilver - **Core Material:** Copper - **Thread Size:** 14mm - **Top Material Type:** Nickel - **Vehicle Service Type:** Watercraft ## Images ![ACDelco Specialty MR43T (19157985) Marine Spark Plug (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/418j7ELfcLL.jpg) ![ACDelco Specialty MR43T (19157985) Marine Spark Plug (Pack of 1) - Image 2](https://m.media-amazon.com/images/I/71cc6THM2JL.jpg) ![ACDelco Specialty MR43T (19157985) Marine Spark Plug (Pack of 1) - Image 3](https://m.media-amazon.com/images/I/61ZxeqAQZ8L.jpg) ## Questions & Answers **Q: Is there a recommended interval for changing my vehicle’s spark plugs?** A: Yes, the interval depends on each vehicle model’s specifications. Refer to your vehicle Owner’s Manual for guidance on when you should change your vehicle’s spark plugs. **Q: Should I change all of my vehicle’s spark plugs at the same time?** A: Yes, when it is time for a scheduled spark plug replacement, all spark plugs should be changed. If a single spark plug is fouled or damaged outside of scheduled maintenance, finding the source of the damage and changing it is recommended. **Q: Can I just clean my spark plugs instead of replacing them?** A: No, ACDelco does not recommend cleaning old spark plugs. Cleaning spark plugs does not repair broken components, chipped insulator tips, and worn electrodes and wires. **Q: What is pre-ignition and can it damage my engine?** A: Yes, pre-ignition can cause serious damage to an engine. Pre-ignition, often accompanied by engine knocking sounds, air and fuel ignite in the engine before the spark plug fires. The condition commonly occurs when old spark plugs are worn or dirty. **Q: Does a diesel engine require a different type of plug than a gas engine?** A: Yes, diesel engines require glow plugs instead of spark plugs. To learn what type of glow plugs or spark plugs your vehicle requires, refer to your vehicle Owner’s Manual for guidance. ## Customer Reviews ### ⭐⭐⭐⭐⭐ High Quality *by J***M on April 1, 2026* Works good, not surprised. ACDelco quality. ### ⭐⭐⭐⭐⭐ Good buy *by J***N on July 15, 2025* Worked great and came as promised ### ⭐⭐⭐⭐⭐ Top quality *by M***E on September 16, 2025* Good quality A a fair price ## Frequently Bought Together - Quicksilver 898264001 AC Delco MR43T Spark Plug - Quicksilver by Mercury Marine 8M0222065 SAE 90 High Performance Gear Lube, 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.us/products/1744788-acdelco-specialty-mr43t-19157985-marine-spark-plug-pack-of-1](https://www.desertcart.us/products/1744788-acdelco-specialty-mr43t-19157985-marine-spark-plug-pack-of-1) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-06*