Set of 4 Spark Plugs Genuine NGK 4291 OEM # ZFR6F11 V-Power Upgrade Pre-Set Gap
V-Power; Pre-Set Gap: 0.044"
V-Power Spark Plugs are named for their specially designed v-groove center electrode to improve ignitability. Tested to the highest original equipment standards, these plugs are crucial for vehicle maintenance.
Features & Benefits:
Cold-rolled threads prevent cross-threading and damage to cylinder heads
Trivalent Metal Plating has superior anti-corrosion and anti-seizing properties (eliminates need for anti-seize)
High-grade alumina silicate ceramic creates a stronger insulator to reduce dielectric punch-through (caused by spark exiting through side of ceramic)
98% pure copper core increases heat dissipation for reliable starts and prevents spark plug overheating
90 degree V-Groove center electrode allows the spark to occur closer to the outside of both the center and ground electrodes for better flame expansion, reducing quenching and improving ignitability
Specifications
Center Electrode Core Material Copper
Center Electrode Tip Material Nickel
Electrical Terminal Type Non-Removable Nut
Gap Size (IN) .044
Ground Configuration Standard
Ground Electrode Core Material Nickel
Ground Electrode Quantity 1
Ground Electrode Tip Design Standard
Hex Size (IN) 5/8
Insulator Height (mm) 50.50
Manufacturer Heat Range 6
Part Number ZFR6F-11
Reach (IN) .75
Resistance (ohms) 5000
Seat Type Flat
Stock Number 4291
Thread Diameter (MM) 14.00
