Arriving at the heels of its brother the “Recirculation Bypass Block Off Valve Fitting” (Click Here For More Info!) Treadstone Performance’s Borg Warner EFR Recirculation Bypass Fitting is a direct replacement fitting that replace the fragile OEM Polymer based (lamens terms: plastic) piece found on all Borg Warner turbos with integrated bypass valve. Designed and manufacturer in house, each individual fitting is CNC from a single block of billet aluminum for a show quality look, and race car durability!

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