Is there a recommended interval for changing my vehicle’s spark plugs?

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.

Should I change all of my vehicle’s spark plugs at the same time?

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.

Can I just clean my spark plugs instead of replacing them?

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.

What is pre-ignition and can it damage my engine?

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.

Does a diesel engine require a different type of plug than a gas engine?

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.

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ACDelco Gold MR43LTS (19355201) Marine Spark Plug

ACDelco Gold MR43LTS (19355201) Marine Spark Plug

Product ID: 4911190

Details

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

⚡Nickel alloy tip for superior ignition

🔥Copper core ensures optimal conductivity

🔧Ribbed suppressor seal for durability & noise reduction

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1540 som

Duties & taxes included

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Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

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 DONT 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.

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.

Specifications

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

Reviews

J**Z

Buena calidad

Muy buenas bujías exactamente lo que buscaba

14.03.2026

M**N

Good performance

Recommended plug for my Mercruiser I/o

7.04.2024

F**N

Perfect spark plug

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.

30.05.2021

C**.

These are Marine Grade Plugs

The package will indicate non-automotive plugs. They are clearly marine grade. They fit into my ford just fine and seem to be working correctly.

23.05.2014

B**.

Recommended

Exact fit. Correct gap.

26.06.2025

M**.

Runs smooth again

The engine (Volvo Penta) was running rough...new plugs and running smooth again.

15.01.2025

A**Z

Good price on factory quality plugs

Good price on factory plugs. Don’t put non stainless steel plugs in your boat. Buy these!

14.07.2023

L**S

Used in a 2000 Glastron 4.3l Vortec marine engine that is OEM recommended.

Standard OEM issue for a 2000 Glastron 4.3l Vortec engine with an SX Cobra sterndrive.

4.02.2025

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1540 som

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In stock

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