Part Number: AVR-290440009. It is compatible with TTI Part# 290440009 Compatible with：Fit for Honda clone 2kw to 4kw 3000 3200 3300 3500 3550 3600 3650 4000 etc. watt generators .For GX clone engine powered Harbor Freight Predator, Champion, Firman, Powermate, Duromax, Durostar, Lifan, Jiangdong, ETQ, Wen, Westinghouse, Generac, Blackmax, Powermax, All power, Sportsman, Coleman, Chicago, Husky, Ryobi, A-ipower, Powerstroke, etc. Feature: Premium 3600 to 5000 Watt Replacement Automatic Voltage Regulator(AVR) Replacement for China-Made Blackmax Branded 3000/3500/3600/3650//4000/4250/4375/4500/4550 Watt 6HP/6.5HP/7HP. It can handle a maximum surge power of 5500 Watts. Note: A higher output AVR definitely works perfect on a generator of low power output while on the contrary, a low power output AVR CAN NOT be used for a generator of higher power output. Professional after-sales：We sell professional parts ，and provide free technical support. If you have any problems or dissatisfaction after receiving the products, please contact us directly to get New Replacement or Return JINGKE AVR Automatic Voltage Regulator Rectifier 290440009 Compatible with Blackmax 3000 3500 3600 3650 4000 4500 4550 Watt 6HP/6.5HP/7HP