Standard Ignition Spark Plug BP6H 3975 Auto Parts Quality Guarantee

This KLP iridium spark plug BP6H (part number 3975) is designed for many models manufactured 2000–2010 under the GM family, fitting Buick, Chevrolet and other brands with 1.6L–2.0L engines; ensures compatibility with OEM ignition systems. As a core ignition component, iridium electrode provides stable spark, improving combustion efficiency and power; includes 6 kΩ resistance to reduce EMI. Although no direct OEM number, interchangeable with Bosch, NGK equivalents (e.g., FR8DCX or BKR6E); before replacement, verify thread size M14x1.25 and reach 26.5 mm. Replacement difficulty is medium; suitable for users with basic mechanical experience; recommended every 40,000–60,000 km or per vehicle manual. For B-end buyers, this spark plug offers high cost-effectiveness for general vehicle lines; bulk purchases reduce inventory costs, especially for repair shops stocking common models.