Killer B Motorsport V2 Black Upper Turbo Coolant Reservoir w/ Barb Fittings 02-07 WRX / 04-21 STI YMM_2016_FRS these spark plugs offer a

these spark plugs offer a smart upgrade for daily drivers and enthusiasts alike

Perfect for Subaru enthusiasts focused on quality drivetrain upgrades

more responsive and smoother braking experience

Ideal for Subaru enthusiasts seeking a clean

Perfect for Subaru enthusiasts aiming to boost power with future tuning and internal upgrades

Killer B Motorsport V2 Black Upper Turbo Coolant Reservoir w/ Barb Fittings 02-07 WRX / 04-21 STI YMM_2016_FRS these spark plugs offer aKiller B Upper Turbo Reservoir utilizes the OEM high point location, mounting points, Subaru filler cap, maintains proper cooling system function, and most importantly, provide clearance for the big rotated turbo setups. All while looking like it belonged there, not as an afterthought. A quick thread search will show LOTS of I just changed my radiator and now my car overheats threads that are a perfect example of what can happen if air is trapped in