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The Fuelab FLB-515 TBI adjustable fuel pressure regulator offers a universal large-seat option for throttle-body injection systems. With a 10–25 psi adjustable range, it features two -10AN inlets and one -6AN return for standard TBI plumbing. Finished in blue, the unit is a compact, serviceable regulator for tunable TBI fuel control.
Fuelab 515 TBI Adjustable FPR Large Seat 10-25 PSI (2) -10AN In (1) -6AN Return - Blue
