Bosch WSR6F Spark Plugs (4-Pack) – Direct Replacement

Upgrade your small engine with these high-performance Bosch WSR6F Spark Plugs—designed for reliable ignition and long-lasting durability. This 4-pack set is a direct replacement for RCJ6Y, W20MPR-U, Stihl 0000-400-7000, and BPMR6A models, ensuring compatibility with a wide range of outdoor power equipment, including lawn mowers, trimmers, and generators.

Featuring a rugged construction and advanced electrode design, these spark plugs deliver consistent performance in extreme conditions, from hot summer days to cold starts. The pre-gapped design requires no adjustments, making installation quick and effortless. Trust Bosch’s precision engineering for smoother starts and improved fuel efficiency in your tools.