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Description
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
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Part Number: 6578
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Manufacturer: NGK
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Model: BPR4ES
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Part Type: Spark Plug
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Thread Size: M14 x 1.25
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Hex Size: 20.8 mm (13/16")
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Thread Reach: 19 mm (3/4")
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Seat Type: Gasket
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Resistor Type: Yes
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Center Electrode: Nickel Alloy
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Core Material: Copper
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Genuine NGK OEM Part
Key Features
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Genuine NGK OEM spark plug
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Copper-core construction for efficient heat transfer
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Nickel-alloy center electrode for long service life
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Integrated resistor reduces electrical interference
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Reliable cold and hot engine starting
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Excellent resistance to fouling and corrosion
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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:
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Lawn mowers
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Garden tractors
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Generators
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Utility equipment
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Industrial engines
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Agricultural equipment
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Small gasoline engines
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Other equipment specifying NGK BPR4ES
Always verify your engine manufacturer's recommended spark plug number before ordering.
Who Is This For?
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Homeowners
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Commercial landscapers
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Equipment maintenance professionals
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Small engine repair technicians
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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
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Genuine NGK OEM quality
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Copper-core construction
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Reliable ignition performance
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Excellent resistance to fouling
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Long service life
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Direct OEM replacement
Cons
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Fits only engines specifying the NGK BPR4ES spark plug
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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
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Genuine OEM-quality construction
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Copper-core for superior heat dissipation
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Reliable spark under demanding conditions
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Excellent corrosion and fouling resistance
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Long-lasting performance
Generic Spark Plugs
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Lower-quality materials
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Less consistent ignition performance
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Shorter service life
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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.
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Genuine OEM replacement parts
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Fast nationwide shipping
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Competitive pricing
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Expert parts support
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Extensive inventory for NGK and other leading outdoor power equipment and engine brands
