Waterman Double-Adjustable Return Regulator 121003 Bright nickel finish for good

Bright nickel finish for good looks and durability

1953-1990 Chevrolet Corvette

1987-1987 GMC V2500 Suburban

1999-2011 GMC Sierra 1500

46 in Rectangular Port

Waterman Double-Adjustable Return Regulator 121003 Bright nickel finish for goodRevolutionary design provides two independent pressure adjustments; one adjustment for idle and one for wide open throttle. Engineered for use with variable volume pumps tied to engine RPM. This regulator creates the smoothest and most repeatable fuel curve from idle to wide open throttle of any return style system. ORB 10 return port. 1 8 NPT gauge port. Provides superior pressure control and flow when installed before the carburetor or after a fuel