Features： 1、QUALITY MATERIAL Made of materials, durable, wear resistant, and long service life. 2、BEST PERFORMANCE Professional manufacturing, superb craftsmanship and high accuracy help to provide the best performance. 3、 ACCESSORY Can effectively extend the service life of the machine, can ly match your machine. 4、EASY TO INSTALL Just install the crankcase cylinder to the appropriate model, proving stable performance. 5、APPLICABILITY This 40mm Crankcase Cylinder is suitable for Husqvarna 136 137 141 142 Chainsaw. Specification： Item Type: Crankcase Cylinder Material: Plastic, Steel Weight: Approx. 1645g 58oz Cylinder Diameter: Approx. 40mm 1.6in Replace Part Number: 530071991 Replace Cylinder Number: 530 06 99-40 Applicability: For Husqvarna 136 137 141 142 Chainsaw Package List： 1 x Cylinder 1 x Crankcase 1 x Spark Plug