Based on this product's specifications, here are some alternatives and similar models
Grimsholm F5RTC Resistor Spark Plug for Lawnmowers
Summary description:
The Grimsholm F5RTC resistor spark plug is a high-quality replacement component designed specifically for lawnmower engines. This spark plug ensures reliable ignition and optimal engine performance by providing consistent electrical discharge. It features a built-in resistor to minimize electromagnetic interference, making it an essential maintenance part for keeping your garden equipment running smoothly and efficiently.