ZZPerformance LSJ Silicone Heater Hose Kit. Look for ZZPerformance on all social platforms! ZZPerformance provides you with highly specific technical information, not found anywhere else. Since the factory LSJ heater hoses were discontinued from GM, we decided to make them out of our matching silicone hose material so they look great with our Radiator hose, and Intercooler hose kits.
