Brand ?PHILTOP Part Spark Plugs OEM Part Number 4469, BY481LFR5A, MZ602090, XP5325, XP6003, LFR5AIX-11 Center Electrode Core Material Copper Center Electrode Tip Material Iridium Ground Electrode Core Material Iridium Ground Electrode Tip Design Taper Cut Ground Configuration Standard Ground Electrode Quantity 1 Electrical Terminal Type Non-Removable Nut Pre-Gap Size .044 in/1.118 mm Resistance 5000 Ohms Manufacturer Part Number ? Hex size 5/8 in/15.875 mm Insulator Height 50.50 mm Manufacturer Heat Range 5 Seat Type Flat Reach 1.043 in/26.50 mm Thread Diameter 14.00 mm [Faster Starts] The double iridium spark plug enhances the center electrode design, concentrating spark energy and improving vehicle ignitability. It leads to smoother engine operation and eliminates misfire concerns. [Longer Lifespan] PHILTOP automotive spark plugs feature double iridium construction for durability and resistance to heat and corrosion. They effectively burn off carbon deposits, extending the plug's lifespan. [Fuel Economy] The 0.8mm fine wire iridium center wire tip design promotes optimal combustion and reduces carbon buildup. The external sealing gasket prevents gas leakage, enhancing fuel efficiency. [Trivalent metal coating] The spark plug offers high temperature durability and robust construction, with excellent resistance to corrosion and seizure, ensuring easy installation and disassembly. [Solid copper core] 98% pure copper core provides excellent heat dissipation, conductivity and ultra-wide thermal range. PHILTOP LFR5AIX-11 Spark Plugs 6 Pack Electrical Terminal Type: Non-Removable NutMaterial: IridiumPre-Gap Size: 0.044 inHex Size: 5/8 inInsulator Height: 50.50 mmHeat Range: 5Reach: 26.5mmThread Diameter: 14mmResistance: 5000 Ohms Please confirm that the spark plug fits your vehicle (Year+Make+Model+Engine Size) before buying! Make sure that the ignition gap is correctly selected before purchasing! A recommended is ignition coil and spark plug be replaced together to avoid common dysfunctions! Reference Number: 4469, BY481LFR5A, MZ602090, XP5325, XP6003, LFR5AIX-11 How To Install The Plug Set? Why To Choose PHILTOP Spark Plugs? Finer Center Electrode Materials with high melting point refuse to accumulate carbon, and the side electrode technology extending its service life Higher Speed Start Requires less voltage and produces a strong spark for improved ignition performance and faster and easier starting Less Fuel Consumption Iridium electrodes and gaps improves the ignition curve, allowing fuel to burn efficiently and reducing emissions Smoother Driving Experience Accelerates more steadily, rejecting jerks, jams and sharp jumps,bring you back to smooth driving experience