Will,
You have made an excellent choice by opting for the GrimmSpeed Radiator Hose Kit for your '19 STI! Upgrading to 4-ply silicone hoses is a smart move, as they offer improved reliability and durability compared to the OEM rubber hoses. When combined with other key reliability mods like an AOS, Koyo Radiator, Killer B water pump housing, and a Cylinder-4 cooling mod, you are taking important steps to enhance the longevity and performance of your EJ motor. Proper cooling and improved components can help prevent potential issues and extend the life of your engine, ensuring that it runs smoothly and efficiently for years to come. Keep up the great work in maintaining and upgrading your STI! We appreciate your 5 Star Review and added pic! Reliability FTW indeed!
Regards,