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The BorgWarner EFR B1 6258 turbocharger is a compact turbocharger specified with a 0.64 A/R turbine housing and VO wastegate (WG). It serves as a turbine and compressor assembly choice for forced-induction builds where turbine sizing and controlled boost matter. Use it to match turbine geometry to targeted spool and midrange response without altering core mounting intent.
BorgWarner Turbo EFR B1 6258 0.64 a/r VO WG
