ARP 201-4306 Head Stud Kit for 1987-1991 BMW E30 2.5L M20 I6
1987–1991 BMW E30 325i/325is (M20 2.5L I6 engine). The ARP 201-4306 Head Stud Kit is engineered specifically for BMW E30 models equipped with the 2.5L M20 inline-6 engine (1987–1991). Prevents cylinder head warping under high RPM conditions.