Bosch® 7547 Spark Plug — NGK WSR6F Crossover
Your Price:
The Bosch 7547 spark plug is a small-engine ignition plug supplied as a crossover replacement for the NGK WSR6F. Common applications include Stihl chainsaws, blowers, and other two-stroke handheld equipment that specify the WSR6F heat range. The Bosch 7547 part number is the standard catalog crossover for this fitment.
The plug uses a copper-core center electrode for efficient heat transfer and a sealed insulator design to resist flashover under high voltage. Thread size is 14 mm, with a tapered seat seal and 19 mm hex. Always verify gap against the OEM equipment manual before installation.
A common stock item for fleet small-engine maintenance programs supporting chainsaw, mowing, and right-of-way equipment. Despite the NGK WSR6F item ID, this part number references the Bosch 7547 crossover supplied through this purchasing channel.
• Direct crossover replacement for NGK WSR6F applications
• Compatible with Stihl two-stroke chainsaws and blowers
• Copper-core center electrode for efficient heat transfer
• Sealed insulator resists flashover under high ignition voltage
• 14 mm thread with tapered seat seal and 19 mm hex
• Common stock item for fleet small-engine maintenance
• Reliable cold start performance in two-stroke applications
• OEM-quality replacement supplied through standard channels