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The Fuelab 515 adjustable fuel pressure regulator for TBI systems features a large-seat design and a 10-25 psi adjustment range, with two -6AN inlet fittings and a single -6AN return to match common hose sizes. Offered as a universal aftermarket unit, it allows installers to tune mid-level fuel pressure for throttle-body injection systems to fit pump and injector combinations.
Fuelab 515 TBI Adjustable FPR Large Seat 10-25 PSI (2) -6AN In (1) -6AN Return - Red
