3" Jet Body with Nut | 3/4" RB x 3/8" B

3/4"RB x 3/8"B | 3" Jet Body (Screw-in) +nut | Old Part RD203-3003A, New Part RD203-3003-002. The 3/4" RB x 3/8" B | 3" Jet Body (Screw-in) with Nut (New Part: RD203-3003-002, Old Part: RD203-3003A) is a high-quality jet body component designed to ensure efficient water and air flow in spa and hot tub systems. This 3-inch jet body features a 3/4" ribbed barb (RB) inlet and a 3/8" barb (B) outlet, creating a secure and leak-proof connection. The screw-in design, along with the included nut, ensures a tight fit for reliable performance in hydrotherapy applications.