If any parts are worn out or beginning to show signs of failure, then this can impact the operation of the vehicle, leading to minor issues that can grow into more serious problems if the parts are not replaced. Vehicles are made up of a wide variety of parts that work together to make the car or truck function. Nickel top can negatively affect performance.Built-in platinum-protected ground wire and V-trimmed ground electrode.High-alumina ceramic insulator for increased strength.Iridium design is made for optimal performance and fuel efficiency.Why it made the cut: Replace old, worn plugs with these high-efficiency iridium ones by Autolite. Best overall: Autolite Iridium XP Spark Plugs Take a look at this selection to find the best spark plugs for your vehicle. The list below comprises the top products based on thorough research and review. The best spark plugs: Reviews & Recommendations Using this information, the top options were selected for this list of the best spark plugs. Additionally, the listed heat range for each spark plug was noted and compared against other products using a simple heat range cross-reference chart to get a clear idea of the performance of each product. The hex size, gap, and expected life of the products were also reviewed to find the best plugs for the vehicle. Premium iridium products were preferred, but not all vehicles are made to use this type, so the top list also makes room for alternate types, including copper, platinum, and double iridium. The first factor that was taken into consideration was the type of plug, differentiated by the material. In order to select a list of the best plugs, it was necessary to conduct extensive research into a broad pool of products to find the top options based on several key product specs. Best double iridium: BOSCH Fine Wire Double Iridium Spark Plug.Best platinum: Bosch 4417 Platinum+4 FGR7DQP Spark Plug.Best overall: Autolite Iridium XP Spark Plugs.In order to restore healthy operation to the engine, it’s necessary to invest in new spark plugs, and this guide will help you learn about the best spark plugs for your vehicle. A brand new vehicle may not need new spark plugs for 50,000 to 100,000 miles, but when the existing spark plugs start to fail, the vehicle will begin to show signs, such as rough idling sounds, knocking engine noises, trouble starting the car, bad fuel economy, and engine misfires. Despite the small size of these components, without spark plugs, the vehicle would not be leaving the driveway under its own power. Spark plugs are designed to set off this air and fuel mixture, allowing the engine to generate enough power to move the vehicle. Learn more ›Ĭombustion engines create a mixture of air and fuel that must be ignited to provide power to the vehicle, and spark plugs provide that trigger. We may earn revenue from the products available on this page and participate in affiliate programs.

Bosch spark plug cross reference