6578 – NGK BPR4ES Spark Plug (Genuine OEM Replacement Spark Plug) The NGK BPR4ES Spark Plug (Part #6578) is a genuine OEM replacement spark plug designed to deliver reliable ignition performance for a wide variety of small engines, utility equipment, generators, lawn and garden machines, and industrial applications. Manufactured by NGK, one of the world's leading spark plug manufacturers, the BPR4ES provides dependable starting, smooth engine operation, improved fuel efficiency, and long-lasting durability. Featuring a copper core, nickel-alloy center electrode, and an integrated resistor, the NGK BPR4ES offers excellent heat transfer, reduced electrical interference, and superior resistance to fouling and corrosion. Product Details Part Number: 6578 Manufacturer: NGK Model: BPR4ES Part Type: Spark Plug Thread Size: M14 x 1.25 Hex Size: 20.8 mm (13/16") Thread Reach: 19 mm (3/4") Seat Type: Gasket Resistor Type: Yes Center Electrode: Nickel Alloy Core Material: Copper Genuine NGK OEM Part Key Features Genuine NGK OEM spark plug Copper-core construction for efficient heat transfer Nickel-alloy center electrode for long service life Integrated resistor reduces electrical interference Reliable cold and hot engine starting Excellent resistance to fouling and corrosion Consistent ignition performance Function The NGK BPR4ES Spark Plug ignites the air-fuel mixture inside the combustion chamber, ensuring efficient combustion, dependable engine starting, smooth operation, and maximum engine performance while helping reduce fuel consumption and emissions. Compatible Equipment The NGK BPR4ES is used in numerous applications requiring this specific spark plug, including compatible: Lawn mowers Garden tractors Generators Utility equipment Industrial engines Agricultural equipment Small gasoline engines Other equipment specifying NGK BPR4ES Always verify your engine manufacturer's recommended spark plug number before ordering. Who Is This For? Homeowners Commercial landscapers Equipment maintenance professionals Small engine repair technicians Agricultural equipment operators Recommended Applications Ideal for routine tune-ups and scheduled maintenance to maintain reliable ignition performance, improve engine efficiency, and extend engine life. Pros Genuine NGK OEM quality Copper-core construction Reliable ignition performance Excellent resistance to fouling Long service life Direct OEM replacement Cons Fits only engines specifying the NGK BPR4ES spark plug Spark plug gap should always be checked according to the equipment manufacturer's specifications before installation Comparison – NGK BPR4ES vs Generic Spark Plugs NGK BPR4ES Genuine OEM-quality construction Copper-core for superior heat dissipation Reliable spark under demanding conditions Excellent corrosion and fouling resistance Long-lasting performance Generic Spark Plugs Lower-quality materials Less consistent ignition performance Shorter service life Increased likelihood of fouling Why Buy from Barry's Power Equipment? Barry's Power Equipment supplies genuine NGK ignition components trusted by professional landscapers, equipment technicians, and homeowners. Genuine OEM replacement parts Fast nationwide shipping Competitive pricing Expert parts support Extensive inventory for NGK and other leading outdoor power equipment and engine brands
