Perrin Turbo Sump Restrictor

• 2014-2018 Subaru | Forester XT
• 2015-2017 Subaru | WRX

Fix both the burning oil smell and blue exhaust smoke problems associated with your WRX turboback exhaust or Stage 2 and higher WRX by installing the PERRIN Turbo Sump Restrictor. Installing aftermarket J-pipes or turboback exhaust systems on 2015+ WRXs (FA20DIT) changes exhaust pressure, allowing engine oil to escape past the turbo seals and leak into the exhaust - this restrictor makes the turbo sump pump more effective at drawing oil out of the turbo sump, creating a slight vacuum that balances exhaust pressure and vacuum on the turbo seals to significantly reduce leaking, without changing oil flow to the turbo in any way.

• Fits 2015-2017 Subaru WRX and 2014-2016 Subaru Forester XT (FA20DIT); 2018+ WRX and 2017-2018 Forester XT use PERRIN part #PSP-ENG-630
• Eliminates burning oil smells and blue exhaust smoke on turbo-back and Stage 2+ setups
• Does not change oil flow to the turbo - only balances seal pressure via improved sump scavenging
• CNC-machined aluminum restrictor body with nickel-plated zinc barbed fittings, black anodized finish
• Includes restrictor, nipple fitting, plug, clamps, zip ties, warranty and instructions - no tuning required
• Part #PSP-ENG-628
• 5-year manufacturer warranty

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