E3 Spark Plugs E3.40 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.460” Reach, Taper Seat, Resistor, Pack of 1
Key features
- •Near elimination of performance inhibiting carbon deposits, dramatically longer plug life and a 5-year/100,000 mile limited warranty
- •DiamondFire electrode technology that creates a superior spark and resulting flame front extending further into the cylinder, producing more localized pressure
- •Significant potential power increase: > 6% to 12% (depending on engine class)
- •Significant potential fuel efficiency improvement: > 4% to 13% (depending on engine class)
- •Drastic potential emissions reduction when used in 2 and 4-stroke engines (after 50 hours): 58% CO emissions reduction, 42% hydrocarbon reduction
E3 Spark Plugs E3.40 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.460” Reach, Taper Seat, Resistor, Pack of 1
List Price: $16.47$14.82DEALYou Save: $1.65 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 23, 2026In Stock (8)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
