BMW 1982-2001 E28, E30, E34, E36, E38, E39, E46, Z3, Old M3. • Converts your standard OBD2 16 pin lead to the 20 pin plug for older BMW models (normally before 2001, check your vehicle to ensure). • Quantity: 1 x 20 Pin to 16 Pin OBD2 Adapter Cable.