超安い Amazon.com: Engine Universal 120V,150W Pad Heating Silicone 継手
Amazon.com: Silicone Heating Pad 120V,150W Universal Engine,220V AC 100x300mm 150W Rectangle Flexible Waterproof Silicon,Silicone Rubber Electric Heating Pad for Car Engine Block,Silicone Rubber Electric Heating Pad for Car Engine Block,61Xk2G4kdfL._AC_UF350,,
Material:Silicon Rubber Voltage:220V AC Type (Width x Length Power):220x220mm 150W