Ngk Spark Plug Stock 3526

The NGK Spark Plug Stock 3526 (BP7EFS) is a premium non-resistor spark plug engineered for reliable ignition performance across a wide range of small engines and equipment. Built by NGK, a manufacturer with decades of expertise in spark plug technology, this standard-specification plug delivers consistent cold-start and warm-running performance in demanding conditions.

This spark plug features a 14mm thread size with a 0.708-inch reach and tapered seat design, making it compatible with equipment originally specified for this standard configuration. The non-resistor construction provides direct electrical conductivity without capacitive filtering, making it ideal for applications where resistor plugs are not required by the engine manufacturer. The compact form factor (3.4 inches in length) ensures it fits within tight engine bay spaces without obstruction or installation complications.

The BP7EFS is used extensively in lawn equipment, portable generators, small utility engines, and comparable applications where OEM spark plug replacement is necessary. Equipment owners and technicians rely on NGK's consistent electrode design and gap calibration to maintain proper combustion timing and fuel efficiency. Whether performing routine maintenance or restoring equipment to factory specifications, this spark plug meets the exact dimensional and electrical requirements of engines originally equipped with this part number.

NGK spark plugs are recognized across small-engine and automotive markets for manufacturing consistency and reliable cold-start capability in variable climates. The stock 3526 designation ensures compatibility with legacy equipment specifications and original manufacturer service recommendations.