This 6-pack gas fuel tank cap and joint filter set is a practical and compatible solution for a wide variety of small engines. Whether you're maintaining a go kart, mini bike, generator, or water pump, this fuel cap set is designed for easy installation and functional performance. Built to fit engines ranging from 4 to 13 horsepower, it directly replaces part numbers 17620-ZH7-013, 17620-ZH7-023, and 17620-Z0T-305. It supports GX110, GX120, GX140, GX160, GX200, GX240, GX270, GX340, and GX390 engines, as well as 212cc and 224cc (non-hemi) models. It also works with CT200U, BT200X, CT200U-EX, and MB165 and MB200 mini bikes. Common applications include power washers, water and trash pumps, lawn edgers, generators, and air compressors. Each cap has a twist-on design with an integrated vent hole to assist with steady fuel delivery during operation. The caps are made from strong plastic material, ideal for long-term use in both indoor and outdoor environments. With an inner diameter of approximately 1.85 inches and an outer diameter of 2.83 inches, these caps offer a snug and reliable fit on compatible fuel tanks. This set provides excellent value by including 2 caps, making it perfect for fleet maintenance, spare parts inventory, or personal use with multiple machines. Whether you're replacing a lost fuel cap or upgrading from an older model, this fuel tank cap and filter set offers a dependable and hassle-free solution for maintaining your equipment's performance.