Bull Boost Performance Cylinder 4 Cooling Mod – Subaru EJ20 / EJ25 WRX STI LGT FXT (02–14 WRX / 04–21 STI) DND Performance Interior(R) and rebound to match your

and rebound to match your driving style

Downpipe assembly

03-06 Chevy Silverado 1500 2500 3500 & HD Models

Compatible With Audi S3 / RS3 (8V) 2015 2016 2017 2018 2019 2020 All Trims

Compatible With Maserati Ghibli S Q4 (M157) 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022

Bull Boost Performance Cylinder 4 Cooling Mod – Subaru EJ20 / EJ25 WRX STI LGT FXT (02–14 WRX / 04–21 STI) DND Performance Interior(R) and rebound to match yourBull Boost Performance Cylinder 4 Cooling Mod Subaru EJ20 EJ25 WRX STI LGT FXT (0214 WRX 0421 STI) Part Number: 720053572384 Product Description: Improve engine reliability and cooling efficiency with the Bull Boost Performance Cylinder 4 Cooling Mod, engineered specifically for Subaru EJ series engines. This upgrade is designed to increase coolant flow to cylinder #4, the hottest and most failure prone area in EJ platforms. By improving coolant