This high-quality spark plug replacement from FirstFire is the perfect choice for your lawn mower. With a model number of FF-22 and a pack of 2, this spark plug is designed to provide reliable and consistent performance for your lawn mower. It is compatible with a variety of lawn mower parts, including RN9YC, RN11YC, RN12YC, BPR4ES, and BPR5ES.

The brand of this spark plug is FirstFire, a trusted name in the industry. It is specifically designed for lawn mowers and is easy to install. With its high-quality construction and durable design, this spark plug replacement is the perfect choice for anyone looking to improve the performance of their lawn mower.