Use this Genuine Genie replacement part, 50 MFD starting capacitor (18004B.S) to replace the existing one (including capacitors labeled X-18004-B) in many compatible Genie model openers. This replacement X-18004-B capacitor installs easily in the exact location of the one getting removed for an easy DIY repair. Get your Genie garage door opener back up and running in minutes with this new capacitor. 50MFD "Jump Starts" the motor in the operator Replaces old capacitors labeled X-18004-B Capacitor hooks up to the existing wires in the operator for quick replacement Compatible with Models ProMax® models, PMX 300-IC/A, PMX 500-IC/A, PMX 300-IC/B, PMX 500-IC/B, IC250, IC250/B, Chainglide® models, PCG 400, PCG 450, PCG 500ML, PCG 600, PCG 650, PCG 700ML, PCG 700FN, GCG 350L, GCG350ML, H2000C-1, H2000C-THDS, 1020L, 2020L
