The 4.0L engine, associated with the 991 model and 96-1/2" wheelbase, features the 5th digit VIN F and is a reliable used engine option designed to deliver steady performance. This naturally aspirated V6 engine, with its electronic multi-point fuel injection, ensures efficient fuel management. Its single overhead cam (SOHC) design promotes dependable timing and ease of maintenance, making it a cost-effective choice for drivers looking for durable performance. Ideal for the 991 model, this used engine provides balanced power and efficiency suitable for various driving needs.