The Difference Between Different Types of Spark Plugs

Spark plugs play a crucial role in running your vehicle’s engine. Different types of vehicles use distinct types of spark plugs depending on purpose. Continue reading this article to learn what you need to know about different spark plug types.

Spark Plug Types Difference Based on Material

Knowing the terminology is necessary to understand different spark plug types. All types of spark plugs are made of ceramic and metal terminals which connect to either a coil boot or spark plug wire.

Spark plugs only differ in their electrode material. You must always consider the manufacturer’s recommendation when choosing one. Here are different spark plug types based on material used.

• COPPER SPARK PLUGS

More than a century, copper spark plugs have been available in the market and are made of pure copper with an electrode that is nickel alloy. Nickel has substantially shorter life compared to iridium or platinum due to its brittleness. Some cars with heavy duty performance need copper due to its high conductivity.

• PLATINUM SPARK PLUGS

Platinum plugs have a platinum disk soldered to the ends of the central electrode, causing the plug to operate better than copper plug. It holds its edge better, resulting in superior transmission.

• DOUBLE PLATINUM SPARK PLUGS

Double platinum spark plugs have platinum discs on the center electrode as well as on the side. This is sturdier and performs well in DIS (Distributorless Ignition System), which can survive up to 80-100,000 miles.

• IRIDIUM SPARK PLUGS

This plug is more durable than platinum. Iridium plugs came on the market in the mid-2000’s as coil-on-plug systems, then it began to get more popular. Iridium plugs usually feature the smallest diameter center, which can increase efficiency by reducing voltage needed to create a spark.

• DOUBLE IRIDIUM SPARK PLUGS

Like double platinum spark plugs, double iridium spark plugs feature two discs of rare metal for increased performance and durability. Double iridium spark plugs are designed to deliver the firepower necessary under any driving conditions, especially extreme heat or continual high-speeds. They can provide up to 4 times the normal life of service compared to a standard copper spark plug.

Spark Plug Types Difference Based on Function

A spark plug functions by igniting the fuel/air mixture in the combustion chamber, then creating a spark of electricity. It’s a vital engine component to perform properly. You may assume all spark plug types are the same because they function in the same manner. However, they differ on their efficiency.

Here’s how they differ based on their function.

• Copper

Copper plug works well by being a great conductor of electricity. It can generate more consistent sparks.

• Platinum

Platinum-coated spark plugs can last longer than copper but can generate fewer sparks since platinum is not a good conductor of electricity.

• Double platinum spark plugs

These plugs have double-platinum discs which ignite more sparks that are necessary for waste spark ignition systems.

• Iridium spark plugs

Due to its durability and high-melting point (4,442º F), iridium plugs can last longer than platinum spark plugs.

• Double Iridium Spark Plugs

These types of spark plugs both have an iridium center and ground electrode which make them perform better and survive longer than other plugs.

Spark Plug Types Difference Based on Performance

Learn more about how different spark plug types differ on their performance. Continue reading below.

• Copper Spark Plug

Copper plugs can do optimum performance since they conduct electricity better. However, they wear out easily.

• Platinum Spark Plug

Platinum plugs are capable of handling high heat well which maximizes spark plugs life. They provide fantastic performance, powerful and consistent spark, and enhance fuel efficiency.

• Double Platinum Spark Plug

This type of plug works best in trucks, cars, SUVs, and motorcycles since its innovative design provides consistent performance no matter what is the weather condition.

• Iridium Spark Plug

Its fine wire center electrode is made to conduct electricity better, optimize durability, and maximize firing capacity. Iridium plugs use less voltage to generate electrical power.

• Double Iridium Spark Plug

This plug’s double-platinum discs, advanced engineering, and laser-welded surfaces help create a more responsive and more efficient performance. Its iridium component works well with resisting heat and corrosion as well as enhancing charge retention.

This spark plug type is perfectly suitable for a high temperature environment and high-pressure areas such as the interior part of a gas-fueled combustion engine.

Spark Plug Types Difference Based on Advantages and Disadvantages

Get to know the pros and cons of using different spark plug types. It’s crucial to understand better which one you should use on your vehicle’s engine.

Copper Spark Plug

ADVANTAGES

• Great electricity conductor
• Less expensive
• Great cooling capacity
• Generate powerful spark with less voltage requirement

DISADVANTAGES

• Not compatible with all types of vehicles
• Wear out easily (need frequent replacement)
• More prone to carbon foul

Platinum Spark Plug

ADVANTAGES

• More durable than copper plug
• Can survive up to 100,000 miles
• Can handle high heat
• Incredible resistance to erosion and corrosion
• Has two varieties (Single and Double Platinum)

DISADVANTAGES

• Expensive
• Not compatible with all vehicle types
• Difficulty in installation due to its smaller size
• Can result to low performance on other engine due to its small electrode size (produce less spark)

Iridium Spark Plug

ADVANTAGES

• More durable than platinum and copper
• Provide long service life and optimum performance under harsh weather conditions
• Impressive heat resistance up to 2400°C
• Can survive 25% longer than platinum spark plugs
• Has two varieties (Single and Double Iridium)

DISADVANTAGES

• More expensive
• Need fire precaution since iridium dust is highly flammable

How to select the best spark plug types for your vehicle?

Here are some tips to select the best spark plugs for your vehicle’s engine:

• Check the recommended spark plugs for your particular vehicle in the user’s manual.
• If the owner’s manual recommends iridium plugs, don’t downgrade to cheaper options like copper plugs to prevent engine risk and bad performance.
• You can reach out to your mechanic for guidance on choosing the best spark plug for your vehicle.
• Choosing the best spark plug for your vehicle’s engine depends on your driving style, budget, and vehicle manufacturer version.

FAQS

Can you use different types of spark plugs for your vehicle?

You cannot use any spark plug type for your vehicle. Some plugs aren’t compatible with other vehicles. You should follow your manufacturer’s recommendation when choosing a spark plug.

What happens if you use the wrong type of spark plug?

If you use the wrong type of spark plug for your vehicle, it can affect its compatibility. For example, the seal doesn’t match. Others have a metal gasket, while others use tapered seals. Also, when you use a wrong heat range of the plug, you may get pre-ignition which might destroy the piston. Your vehicle’s engine will not run well.

Conclusion

After selecting the best spark plug type for your vehicles, you should also consider spark plug maintenance to guarantee its consistency in good performance. Do a regular check up on your plugs if there’s any wear or damage, or if they need replacement.