10 Best Spark Plugs 2025 in the United States

The ACDelco 41-962 Professional Platinum Spark Plug offers several strong features that make it a reliable choice for car owners looking for durable spark plugs. The one-piece, fired-in suppressor seal ensures a gas-tight seal, which helps to reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures. This leads to a longer lifespan of the spark plug. The double platinum point pad on the center and ground electrode enhances durability and ensures consistent voltage demands, reducing wear on the ignition system.

Additionally, the pure copper core promotes cooler electrode temperatures which maximizes durability and resistance to fouling. These features contribute to a high-performance spark plug that is ideal for car users seeking longevity and reliability in their vehicle’s ignition system. However, it's important to note that this spark plug is specifically designed for cars, so it may not be suitable for other types of vehicles. The thread size is 14 millimeters, which is a common size, but users should ensure compatibility with their specific vehicle make and model.

The ACDelco 41-962 is a solid choice due to its robust construction and thoughtful design features.

The 8 ACD-OEM Double Platinum Spark Plugs and Wires Set for LS2, LS3, LS4, LS7 Engines offers several strengths. The double platinum point pads on the center and ground electrodes ensure excellent durability and consistent voltage demands, which can extend the lifespan of your ignition system. Additionally, the pure copper core helps in maintaining a cooler electrode temperature, enhancing durability and reducing fouling.

The set includes heat shields, which can be beneficial in protecting the plugs and wires from engine heat, potentially prolonging their life and performance. The spark plug distributor boot shape and materials are designed for a proper fit and water-tight seal, ensuring efficient performance similar to the original GM components.

The product is highly rated with a 4.6 out of 5 stars from 691 customer reviews, indicating general satisfaction. The item is also ranked well in the automotive replacement spark plugs category, suggesting it’s a popular choice among consumers. This product is ideal for car owners looking for reliable spark plugs and wires that match OEM standards, especially for those with LS2, LS3, LS4, or LS7 engines.

The Champion Spark Plug for Craftsman (2 Pack) # 71G RC12YC-2pk is a solid choice for those looking to replace spark plugs in their vehicles, particularly Craftsman models. Made of copper, it offers excellent heat conductivity, which is crucial for optimal engine performance and efficiency. With a thread size of 14x19, it is versatile enough to fit most conventional car engines, making it a good choice for a wide range of users.

The 0.04-inch gap size is fairly standard and should accommodate most typical engine requirements, though it is always wise to double-check your vehicle's specifications for compatibility. The high customer rating of 4.7 stars from over 3,200 reviews suggests strong general satisfaction, indicating that it performs well for most users. One potential drawback is the packaging, as it comes in a bulk pack, which might not be ideal for those who prefer more detailed individual packaging or specific installation guides.

Despite being in the market since 2013, the product's strong ranking (#2 in Automotive Replacement Spark Plugs) shows it remains a popular and trusted choice. The copper core material, while less durable than platinum or iridium, provides an excellent balance between performance and cost, making these spark plugs a reliable option for everyday vehicle maintenance.