NGK BP4ES (6928) – Spark Plug (Genuine NGK OEM Spark Plug) The NGK BP4ES (Stock No. 6928) is a genuine OEM spark plug engineered to deliver dependable ignition performance for a wide range of small engines, industrial equipment, agricultural machinery, generators, and vintage gasoline-powered equipment. Designed to NGK's world-renowned quality standards, the BP4ES provides consistent spark, efficient combustion, easy starting, and reliable engine performance under demanding operating conditions. Featuring a copper-core center electrode, precision ceramic insulator, and corrosion-resistant shell, the NGK BP4ES offers excellent heat dissipation, reduced electrode wear, and long service life. It is trusted by professionals worldwide for superior ignition reliability and engine efficiency. Product Details Manufacturer: NGK Part Number: BP4ES Stock Number: 6928 Part Type: Spark Plug Electrode Type: Copper Core Thread Size: 14 mm Reach: 19 mm (3/4") Hex Size: 20.8 mm (13/16") Seat Type: Gasket Seat OEM Status: Genuine NGK OEM Part Key Features Genuine NGK OEM spark plug Copper-core center electrode for excellent conductivity Reliable cold and hot starting Consistent spark for efficient combustion Excellent heat dissipation Corrosion-resistant plated shell Long service life Precision-manufactured for dependable performance Function The NGK BP4ES generates the spark required to ignite the air-fuel mixture inside the combustion chamber. A properly functioning spark plug promotes efficient combustion, smooth engine operation, maximum power output, improved fuel economy, and reduced emissions. Compatible Equipment The NGK BP4ES (6928) is commonly used in a variety of gasoline-powered equipment, including selected: Lawn and garden equipment Industrial engines Agricultural machinery Portable generators Water pumps Vintage automobiles Marine applications Other equipment specifying NGK BP4ES or equivalent spark plugs It may also replace or cross-reference several OEM spark plugs from manufacturers including: Briggs & Stratton Honda Kawasaki Kohler Onan Wisconsin Tecumseh Other manufacturers specifying NGK BP4ES Always verify your equipment manufacturer's recommended spark plug number, thread size, reach, and heat range before ordering. Who Is This For? Homeowners Commercial landscapers Small engine repair technicians Agricultural equipment owners Equipment dealers Professional mechanics Recommended Applications Ideal for: Routine engine maintenance Engine tune-ups Spark plug replacement Hard-starting engine repairs Preventive maintenance Equipment restoration Pros Genuine NGK OEM quality Copper-core electrode for strong spark performance Excellent ignition reliability Easy starting Long service life Corrosion-resistant construction Trusted by OEM engine manufacturers worldwide Cons Must match the engine manufacturer's specified heat range and dimensions Spark plug gap should always be checked and adjusted to manufacturer specifications before installation Comparison – NGK BP4ES vs Economy Spark Plugs NGK BP4ES (6928) Genuine NGK OEM quality Copper-core electrode Consistent spark performance Superior durability Excellent heat dissipation Long service life Economy Spark Plugs Lower-quality electrode materials Reduced ignition consistency Shorter service life Less resistance to fouling and corrosion Why Buy from Barry's Power Equipment? Barry's Power Equipment supplies genuine OEM replacement parts trusted by homeowners, commercial landscapers, repair facilities, and outdoor power equipment professionals. Genuine NGK ignition components Fast nationwide shipping Competitive pricing Expert technical support Extensive inventory for NGK, STIHL, Kawasaki, Honda, Kohler, Briggs & Stratton, SCAG, Toro, Exmark, Wright, Ariens, Gravely, Ferris, Cub Cadet, John Deere, and many other leading outdoor power equipment brands.