---
product_id: 4911190
title: "ACDelco Gold MR43LTS (19355201) Marine Spark Plug"
brand: "acdelco"
price: "$15.93"
currency: USD
in_stock: true
reviews_count: 8
category: "Ac Delco"
url: https://www.desertcart.us/products/4911190-acdelco-gold-mr43lts-19355201-marine-spark-plug
store_origin: US
region: United States of America
---

# Nickel alloy tip for superior ignition Copper core ensures optimal conductivity Ribbed suppressor seal for durability & noise reduction ACDelco Gold MR43LTS (19355201) Marine Spark Plug

**Brand:** acdelco
**Price:** $15.93
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your marine engine’s potential with ACDelco Gold – don’t let your boat run on anything less!

## Quick Answers

- **What is this?** ACDelco Gold MR43LTS (19355201) Marine Spark Plug by acdelco
- **How much does it cost?** $15.93 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/4911190-acdelco-gold-mr43lts-19355201-marine-spark-plug)

## 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

- • **OEM-Recommended Fit:** Vehicle-specific design ensures perfect compatibility with your marine engine for hassle-free installation.
- • **Optimized Conductivity:** Copper core maximizes electrical flow for smoother engine starts and reliable operation.
- • **Upgrade, Don’t Settle:** Replace old plugs with factory-quality ACDelco for improved engine efficiency and peace of mind on every voyage.
- • **Durability Meets Precision:** Ribbed suppressor seal reduces electrical noise and enhances plug longevity under watercraft conditions.
- • **Marine-Grade Ignition Power:** Nickel alloy tip delivers consistent, high-performance sparks even in harsh marine environments.

## Overview

The ACDelco Gold MR43LTS marine spark plug features a nickel alloy tip and copper core for superior ignition and conductivity, combined with a ribbed suppressor seal for enhanced durability and noise reduction. Designed specifically for marine engines, it ensures OEM-level fit and reliable performance, making it the trusted choice for boaters seeking consistent power and longevity.

## Description

ACDelco MR43LTS Specialty Marine Spark Plug (Pack of 1)

Review: Buena calidad - Muy buenas bujías exactamente lo que buscaba
Review: Good performance - Recommended plug for my Mercruiser I/o

## Features

- Made by AC Delco with nickel alloy tip, copper core and ribbed suppressor seal for durability and performance
- 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
- Don’t just clean used spark plugs, replace them with new plugs for better performance
- Replace all the engine plugs at the same time
- Fit type: Vehicle Specific

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0013WFURM |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #27,173 in Automotive ( See Top 100 in Automotive ) #192 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 408 Reviews |
| Included Components | Spark Plug (1) |
| Item Type Name | 862029 Spark Plug - AC Delco Spark Plug MR43LTS |
| Manufacturer | Quicksilver |
| Manufacturer Part Number | 19355201 |
| Manufacturer Warranty Description | 24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details. |
| Model Number | MR43LTS |
| OEM Equivalent Part Number | 05614210 |
| Thread Size | Unspecified |
| Top Material Type | Nickel |
| UPC | 808709617211 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Watercraft |

## Product Details

- **Brand:** ACDelco
- **Core Material:** Copper
- **Thread Size:** Unspecified
- **Top Material Type:** Nickel
- **Vehicle Service Type:** Watercraft

## Images

![ACDelco Gold MR43LTS (19355201) Marine Spark Plug - Image 1](https://m.media-amazon.com/images/I/51QwJmt+KAL.jpg)
![ACDelco Gold MR43LTS (19355201) Marine Spark Plug - Image 2](https://m.media-amazon.com/images/I/51Xa40mL3RL.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

### ⭐⭐⭐⭐⭐ Buena calidad
*by J***Z on March 14, 2026*

Muy buenas bujías exactamente lo que buscaba

### ⭐⭐⭐⭐⭐ Good performance
*by M***N on April 7, 2024*

Recommended plug for my Mercruiser I/o

### ⭐⭐⭐⭐⭐ Perfect spark plug
*by F***N on May 30, 2021*

These are the correct type plugs for my engine, great value and increased hours per gallon on the water, stainless steel housing with stands the harsh salt environment on the water.

## Frequently Bought Together

- ACDelco MR43LTS Specialty Marine Spark Plug (Pack of 1)
- Quicksilver by Mercury Marine 866340Q03 Oil Filter, MerCruiser Sterndrive and Inboard Engines
- Quicksilver by Mercury Marine 25W-40 Marine Engine Oil

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-10*