The 2001 Ford Expedition has single overhead cam (SOHC).
The 2001 Ford Explorer has single overhead cam (SOHC).
The 2001 Ford Focus has double overhead cam (DOHC).
The 2001 Ford Escape has double overhead cam (DOHC).
The 2001 Ford Mustang has overhead valves (OHV).
The 2001 Ford Taurus has overhead valves (OHV).
The 2001 Ford F-250-Super-DUTY has single overhead cam (SOHC).
The 2001 Ford F-150 has overhead valves (OHV).
The 2001 Volvo S80 has double overhead cam (DOHC).
The 2001 Toyota RAV4 has double overhead cam (DOHC).
The 2001 Subaru Legacy has single overhead cam (SOHC).
The 2001 BMW X5 has double overhead cam (DOHC).