Heavy Duty Fayan Piston Rings 0.00 are precision-engineered to fit 178F engine power weeders, ensuring superior sealing and efficient combustion. Designed for a standard 78mm diameter piston, these rings maintain excellent compression, reduce oil consumption, and extend engine life. Delivered as two complete sets, they offer reliable performance and durability, making them the ideal replacement solution for long-lasting operation in agricultural and industrial diesel engines.