Spark Plugs

Individual Plugs & Plug Sets

Do you know what's the most common reason for the catalytic converter to fail? It may sound strange but quite often it's all because of the worn-out spark plugs. This small yet vital component helps your vehicle run properly, while the damaged unit can cause a lot of troubles, including excessive fuel consumption and sluggish performance. Unfortunately, the only way to check whether a spark plug needs replacement is by visual examination. Well, as soon as you notice any visual damage, don't hold up and get a new plug.

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We aim to provide our customers with the finest Spark Plugs the industry can offer, which is why we accept no compromise when it comes to the quality. Created by the most reputable names in the industry, such as Champion, Autolite, Bosch, NGK, Motorcraft, Denso the Spark Plugs we've gathered for you feature precise design and everlasting durability.

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As always, CARiD stores any and all replacement spark plugs available on the market - copper, platinum, iridium plugs and much more! Full throttle response, better fuel efficiency, and reduced emission levels are only couple of benefits you'll get with a new part. By getting new plugs with us, you can also enjoy our affordable prices, fast shipping and excellent follow-up service.

Before making a replacement, let's first learn how a spark plug functions. The part consists of several elements: the terminal, insulator, body, and two electrodes (center electrode and ground). Screwed into the cylinder head, the plug provides a spark which is required to ignite the air-fuel mixture. The plug also operates like a heat exchanger as it removes any excessive heat from the combustion chamber. Day after day, the plugs must cope with high pressures, extreme temperatures and constant vibration. And even though they are designed to withstand that, wear and tear is inevitable.

The spark plugs never fail all of a sudden, instead they gradually wear out. And that is why it's a good idea to know why and how fast spark plugs get damaged. It happens that the engine stumbles and then it doesn't start at all. Sometimes the engine might run and then misfire. The damaged spark plug is likely the culprit. There are various reasons for the failure. The engine condition, the purity of the fuel you usually use, and even the way you drive affect the useful life of the items. Oil buildup, carbon and combustion deposits, lean air/fuel mixtures can all lead to the plug damage. When it happens, let CARiD set your mind at ease and offer the first-class replacements.

Let's find out how often your spark plugs need inspection and replacement. Well, every 30,000 miles is a normal baseline. But remember that vehicles have different requirements, and the spark plugs may stay healthy for 100,000 miles or even more. Yet when the time comes, just remove the plug and visually examine it. Should you notice glazing, white deposits or excessive electrode wear, the time has come for replacement. It is an easy job to do if you can remove the plugs. But if you are not mechanically inclined or feel like it's a bit complicated task, then visit the nearest auto repair center.


Here they are - the reasons why you need to change your old plugs. The number one reason is that the new parts maintain high engine performance and efficiency. New plugs also improve cold starting, which allows the engine to effortlessly start in the coldest weather. The third 'why' is that the new spark plugs minimize the risk of the catalytic converter failure. Well, now you see that spark plugs should be replaced when damaged or worn-out. Fix the problem as soon an possible with the repair parts that we've gathered for you at CARiD.

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Spark Plugs Reviews
Average rating:55 - 6 votes
4.5(4.5)
APPEARANCE10
EASE OF INSTALLATION10
PRICE/VALUE8
QUALITY8
Bosch OE Finewire Platinun Spark Plug
2004 Mitsubishi Lancer
| Posted by | (Tuba City, AZ)

I previously had copper NGK plugs for 2 years and switching to these made a difference my car now runs smoothly. The price for 4 of these were crazy exceptional plus they're platinum!! This was my first time buying a product from this site and I got what I needed all hastle free they got right back to me in within the same evning when all phones lines were busy. The shipping was fast, I'm definitely looking forward to making another purchase with CARiD.com!

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