GrimmSpeed Radiator Hoses for 2015-2021 WRX Select::Black (405324) The STM Relocated Coolant Overflow

The STM Relocated Coolant Overflow Reservoir for the Evo 8/9 features lightweight

This does not replace the MIVEC Evo 9 intake cam gear

Change Wastegate Open Pressure

updates and vehicle compatibility

Improves heat and pressure tolerance

GrimmSpeed Radiator Hoses for 2015-2021 WRX Select::Black (405324) The STM Relocated Coolant OverflowGrimmSpeed radiator hoses for 2015 2021 Subaru WRX are available in black or red and include the set of upper and lower hoses with new clamps for install. These 5 ply silicone hoses have fiber reinforcement between each layer of silicone to ensure that they maintain their shape and durability for the life of your Subaru. Vehicle Fitment: 2015 2021 Subaru WRX Features: 5 ply silicone construction 3D scanned for perfect fit High quality replacement