SaferCCTV(TM)40mm Cylinder Piston Ring Circlips Wrist Pin Assembly Kit for Husqvarna 136 137 141 142 Jonsered 2040 CS2040, Also fit 2036 P/N 530 06 99 40 and Increase Power Replace 530 06 99-41 1. Replacement Part# 530 06 99-41 2. High Quality Non Genuine 40mm Replace Cylinder & Piston Kit 3. Suitable for Husqvarna 136, 137, 141, 142 Jonsered 2040, CS2040 4. Will also fit 2036 P/N 530 06 99 40 and increase power 5. Profesional sales-after service - We do offer a 60-days money-back guarantee on all orders to allow you to test the product