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Radium Engineering recommends installing insulation sleeving (not included) over any hose exposed to cold air flow - This will help prevent any water condensation from freezing and potentially clogging the hose
Easy installation with no special tools required
your order includes two custom-designed drivers
Includes silicone coupler and clamps
Includes pilot bearing
Radium Fuel Injector Pulsation Damper for OEM Rail - 2015-2021 Subaru STI PDM_cabin-filters Radium Engineering recommends installing insulationThis is the same Fuel Injector Pulsation Damper found in the stock fuel rails for the WRX STI. Fuel Injector Pulsation Damper This is the same Fuel Injector Pulsation Damper found in the stock fuel rails for the WRX STI. The opening and closing of the injectors creates pulses in the fuel rail, which can lead to unstable fuel pressure. This damper should be used (especially with high flow injectors) in order to achieve a safe and consistent rail
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