Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across USA
The E3.40 auto spark plug is a 14mm, 0.460” reach plug with a taper seat. It fits domestic applications in the 60’s to early 90’s, and is widely stocked in automotive retail stores. E3 automotive plugs have three legs securing the DiamondFIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented DiamondFIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use. The unique ground electrode and full-size center electrode also provides optimal performance for a guaranteed five years or 100,000 miles. Part Number: E3.40; Resistor: Resistor; Hex Size: 5/8; Thread Reach: 0.460; Thread Diameter: 14mm; Seat: Taper; Tip/Gap: DiamondFIRE Fixed Gap Cannot Be Adjusted. Our unique DiamondFIRE open design forces air gap discharges, creating the preferred edge-to-edge spark path. The design allows replenishment of the spark zone with a fresh fuel/air charge, and exposes the flame front more directly to the piston head than other plug designs. This distinctive spark plug design has proven to simultaneously increase engine power output, reduce gasoline consumption, decrease hydrocarbon and carbon monoxide emissions from the engine, and materially extend the life of the spark plug. Our lawn and garden spark plugs help engines operate more efficiently with a faster and smoother acceleration.
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
Frequently Asked Questions
Q: What types of vehicles are compatible with the E3.40 spark plug?A: The E3.40 spark plug is designed to fit a variety of domestic applications, particularly for vehicles from the 1960s to the early 1990s. It is suitable for many automotive and truck models, making it a versatile choice for older cars.
Q: How does the DiamondFIRE technology improve engine performance?A: The patented DiamondFIRE technology enhances engine performance by creating a more efficient spark. This design promotes better heat transfer and generates more turbulence in the cylinder, leading to increased power output, reduced fuel consumption, and lower hydrocarbon emissions.
Q: What is the lifespan of the E3.40 spark plug?A: The E3.40 spark plug is guaranteed to last up to five years or 100,000 miles under normal driving conditions. Its unique design and materials contribute to its durability and longevity.
Q: Can I use the E3.40 spark plug in high-performance applications?A: Yes, the E3.40 spark plug is designed with colder heat ranges, making it suitable for performance modifications. It can effectively support high-performance applications while helping to maintain engine efficiency.
Q: What should I consider when replacing spark plugs in my vehicle?A: When replacing spark plugs, consider the type and specifications required for your vehicle, such as the thread size and reach. Ensure compatibility with your engine, and always follow the manufacturer's recommendations for installation and maintenance for optimal performance.
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