Wahler Thermostat Assembly, with Housing; 2001 BMW X5 3.0i; 2001-2002 BMW X5 3.0i; 2002-2003 BMW X5 3.0i; 2003 BMW X5 3.0i; 1998 BMW Z3, L6 2.8L; 1998 BMW Z3, L6 2.8L; 1999 BMW Z3, L6 2.5L; 1999 BMW Z3, L6 2.5L; 1999 BMW Z3, L6 2.8L; 1999 BMW Z3, L6 2.8L;