The NGK BPR5ES Spark Plug (Part #5574) is a high-performance replacement plug trusted by professionals for reliable ignition, cleaner combustion, and longer engine life. Designed to meet or exceed OEM specifications, this spark plug delivers consistent performance for Honda small engines, pressure washers, soft wash systems, generators, and other power equipment. Built with NGK’s advanced technology, the BPR5ES ensures quick starts, stable idling, and improved fuel efficiency under all operating conditions. Its durable construction and precision electrode design make it ideal for both residential and commercial engine applications. Features & Specifications: Manufacturer: NGK Part Number: BPR5ES (5574) Thread Size: 14mm Reach: 19mm (3/4”) Hex Size: 13/16” (21mm) Gap: Pre-gapped to factory settings (check manual for adjustments) Resistor Type: Yes Material: Nickel electrode for long life and consistent spark Compatibility: Fits select Honda GX series and other small engines Applications: Pressure washers, generators, lawn mowers, soft wash systems, and outdoor power equipment Benefits: Provides reliable starts and smooth engine operation Resists fouling and corrosion for longer plug life Ensures efficient combustion and reduced emissions Trusted OEM-quality replacement for Honda and similar engines Upgrade your engine’s performance and dependability with the NGK BPR5ES Spark Plug (5574) — the industry standard for precision, durability, and ignition reliability.
