DENSO W16FP-U Spark Plug

This 4-pack contains DENSO W16FP-U spark plugs, a model designed to meet the OEM specifications for engines that call for the W16FP-U replacement, ensuring proper fit in the threaded receptacle and electrode configuration. The listing specifies compatibility with Honda, Kubota, Suzuki, and Gravely equipment, so these plugs are suited for multiple small- to mid-size engines used in outdoor power equipment, lawn care tools, and compact industrial machines. Stocking a four-pack is convenient for routine maintenance on several machines that share the same part, helping ensure you have the correct replacement on hand when ignition performance declines, while reducing downtime from last-minute parts orders. Because these plugs carry the W16FP-U designation, they should be installed only in engines that require that exact DENSO part to ensure proper fit and ignition compatibility with the engine's design.