Hign-concerned Chemical:NoneSpecial Features:2 2.36 2.5 2.75 3 inchManufacturer Part Number:Exhaust Cutout ValveInterchange Part Number:stainless steelCountry/Region of Car Manufacture:Zhejiang ChinaType:MufflerMounting Position:RearOrigin:Mainland ChinaMaterial:304stainless steelExhaust Cutout Vacuum Pump Vacuum Valve Control Unit with Exhaust Vacuum Control Solenoid Valve and remote Control Included: Remote control 2pcs Cigarette lighter power line 1pcs butterfly valve 1pcs Vacuum tube 4 meters Fittings 1set Vacuum solenoid valve with line 1pcs controller 1pcs Diameter of Butterfly Valve: 2&2.36&2.5&3.0inch 1inch=25.4mm Please make sure your all dimensions before place order Please contact us if you want other version of the controller,we also have phone app version ,through the OBD system of your car control the valve's open and colse. New circuit design, more stable, more durable, aluminum alloy shell with better heat dissipation,dual remote control. 315MHZ RF remote control, remote control distance: 50-100 meters NOTE: Because batteries are contraband, all remote controls do not include batteries and you need to buy them locally. ALL items are Brand New unless stated otherwise on the listing. We sell DIY (Do It Yourself) Items with a few exceptions. We take no responsibility in teaching you how to install. Professional installation is strongly recommended We are a factory with 12 years of production experience, mainly producing automotive modified parts such as exhaust pipes and electronic meters. If you have any interested products, welcome to contact with us.