Adjustable fuel pressure regulator for turbo and naturally aspirated engines. Can be fitted instead of the standard model. Suitable for : - BMW 320i E36 Convertible or Coupé from 1996 to 1998 - BMW 323i E46 - BMW 325i E30 2.5 from 1985 to 1991 - BMW 316i or 318ti Compact E46 as of 1999 - BMW Z3 1.8 or 1.9 as of 1994 - BMW Z3 2.8 as of 1996