Dorman 42004 Spark Plug Non-Fouler

Overview of Dorman Spark Plug Non-Fouler 42004

The Dorman 42004 spark plug non-fouler is designed to provide reliable secondary ignition performance for a wide range of vehicles including Acura, BMW, Ford, Honda, Toyota, and Volkswagen models. Constructed from durable steel with a silver finish, this part ensures consistent spark plug operation and helps prevent fouling issues.

• Made from high-quality steel material for durability
• Silver color for corrosion resistance
• Includes 2 spark plug non-foulers per package
• Tapered spark plug seat style for secure fitment
• 14 mm spark plug thread size compatible with many vehicles

Detailed Product Description

The Dorman 42004 spark plug non-fouler is engineered to maintain optimal ignition system performance by preventing spark plug fouling. Its steel construction offers strength and longevity, while the silver finish provides resistance against corrosion and heat. The tapered seat style ensures a tight and secure fit on spark plugs with a 14 mm thread size, making it suitable for a broad range of automotive applications. This part is compatible with numerous makes and models such as the Toyota 4Runner, BMW 328i, Ford Mustang, Honda Accord, and Volkswagen Jetta, among others.

Common Applications and Issues Addressed

• Prevents spark plug fouling caused by oil or carbon buildup
• Helps maintain consistent ignition spark for smoother engine performance
• Reduces misfires related to secondary ignition problems
• Supports ignition system reliability in vehicles like the Acura TL and Subaru Forester
• Assists in extending spark plug life in high-mileage engines

Installation Notes and Tips

• Ensure spark plug threads and seat are clean before installation
• Use proper torque specifications to avoid damage to the tapered seat
• Verify compatibility with your vehicle’s spark plug thread size (14 mm)
• Replace in pairs for balanced ignition system performance
• Consult vehicle service manual for specific installation procedures

Quality Assurance and Warranty

Dorman manufactures the 42004 spark plug non-fouler to meet or exceed OEM standards for secondary ignition components. The steel material and precise manufacturing processes contribute to reliable performance and durability. While specific warranty details may vary, Dorman typically offers coverage against defects in material and workmanship to ensure customer confidence in the product.