How to Choose the Right Spark Plugs for a Mitsubishi Outlander PHEV for Optimal Performance?

As a Mitsubishi Outlander PHEV owner, you are already ahead of the curve with your choice of an environmentally friendly, fuel-efficient hybrid. From time to time, you’ll need to think about maintenance and replacing parts to keep your vehicle operating at peak performance. One of the parts you may overlook in your maintenance plan is the spark plug. This small yet crucial part plays a significant role in your vehicle engine’s operation.

With the depth of choices available in the market, the task of choosing the right spark plugs can seem quite daunting. However, it’s not rocket science. By understanding your vehicle’s needs and the benefits of different spark plug materials, you can make an informed decision.

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Deciphering the Engine Code

Every Mitsubishi Outlander PHEV engine bears a unique code that contains critical information about your vehicle. This alphanumeric code is your first stop to understanding the type of spark plugs your engine requires.

Typically, you’ll find this code on a sticker in the engine compartment or in your vehicle’s service book. The code is made up of several components including engine configuration, aspiration method, and engine series. These factors will guide your choice of spark plugs.

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In terms of aspiration, whether your engine is naturally aspirated or turbocharged significantly affects the type of spark plug you need. Naturally aspirated engines require a different heat range than their forced-induction counterparts.

Sponsored Parts and Shipping

If you’re looking to get your spark plugs replaced, consider using sponsored parts. These are parts that the manufacturer recommends and are usually available from your local Mitsubishi dealer or online. They are often of high quality and specifically designed to work optimally with your vehicle.

Remember to factor in the shipping time when you order your parts online. The last thing you want is to have your Outlander PHEV sitting idle in the garage while you’re waiting for parts to arrive.

The Role of the Plug Gap

The gap in a spark plug is the distance between the center and ground electrode where the spark jumps. Correctly gapped spark plugs are crucial for optimal combustion and fuel economy.

The majority of spark plugs for modern vehicles, including the Outlander PHEV, come pre-gapped. However, it’s always a good idea to check the gap before installation. The specifications for the right gap size can be found in your vehicle’s service book.

Choosing Between Iridium and Other Plugs

When it comes to spark plug materials, there are primarily three options: copper, platinum, and iridium. Iridium spark plugs are some of the best on the market, offering superior performance and longevity.

The Mitsubishi Outlander PHEV, with its hybrid engine, can greatly benefit from the efficiency that iridium plugs offer. This is because the PHEV engine switches between gas and electric power, requiring spark plugs that can handle the variations in power.

The Role of NGK in Spark Plug Manufacturing

NGK is a well-known brand in the world of spark plugs. They have a reputation for producing high-quality, reliable products that stand the test of time. NGK offers a variety of spark plugs suitable for different engines, including the Mitsubishi Outlander PHEV.

When choosing spark plugs, it’s always a good idea to consider trusted brands like NGK. They often provide detailed product listings and compatibility charts that can help you identify the right spark plugs for your vehicle.

In conclusion, choosing the right spark plugs for your Mitsubishi Outlander PHEV involves understanding your engine code, considering the plug gap, and deciding on the right material for your spark plugs. By considering all these factors, you can make a confident decision and keep your hybrid vehicle running smoothly.

Understanding the Difference Between Single and Double Iridium Spark Plugs

Choosing the right type of iridium spark plug for your Mitsubishi Outlander PHEV is vital to ensure optimal performance. Iridium spark plugs come in two primary types – single and double.

Single iridium spark plugs have a fine wire center electrode, while double iridium spark plugs feature a fine wire center and a fine wire ground electrode. This improvement in design provides a significant boost in performance and longevity.

Your Mitsubishi Outlander, whether a limited gas, base gas, or sport gas model, will benefit significantly from double iridium spark plugs. Their improved design offers a more stable and consistent spark, providing a smoother and more efficient combustion process. This translates into better fuel economy, improved power output, and a longer lifespan for your spark plugs.

In terms of brand, NGK spark plugs are a leading choice. They offer a wide range of high-quality single and double iridium spark plugs, ensuring you can find a product that perfectly fits your Outlander PHEV.

The Importance of Correctly Setting the Gap

The gap in a spark plug is critical to the performance of your Mitsubishi Outlander PHEV. An incorrect gap can lead to misfires, poor fuel economy, and diminished performance.

Setting the correct gap, whether on a flex gap or a fixed gap plug, is a straightforward process. You will need a feeler gauge or a spark plug gapping tool and your Outlander’s service book for the correct gap specifications.

It’s worth noting that while most modern spark plugs, including the NGK iridium plugs, come pre-gapped, it’s always prudent to check and adjust as necessary. For instance, the gap Honda recommends for its vehicles may be different from what your Outlander PHEV requires.

Always remember to handle your spark plugs with care during this process. The iridium tips are extremely delicate and can be damaged easily.


Choosing the right spark plugs for your Mitsubishi Outlander PHEV is not just about ensuring optimal performance. It’s about prolonging the life of your engine, achieving better fuel economy, and maintaining the efficiency of your hybrid gas system.

Understanding the engine code, the role of the plug gap, and the benefits of iridium spark plugs, particularly double iridium, are key to making the right choice.

Whether it’s a gap engine or a laser iridium spark plug that you need, trusted brands like NGK spark provide comprehensive charts and detailed listings to help you identify the right parts. Armed with this knowledge and your trusty service book, you can confidently keep your Outlander PHEV running smoothly for many years to come.