This valve suits a 16mm (5/8) ID Hose with 2 ports for optimal performance. HSV Statesman. VR [09/1994 to 04/1995] (5.7L 304 Stroker V8 16 Valve OHV MPFI 5710cc)Suits 16mm (5/8) ID Hose 2 Port. VS [04/1995 to 09/1996] (5.7L 304 Stroker V8 16 Valve OHV MPFI 5710cc).
