The 2004 Toyota Sienna has 24 valves.
The 2004 Toyota Tundra has 24 valves.
The 2004 Toyota Corolla has 16 valves.
The 2004 Toyota Avalon has 24 valves.
The 2004 Toyota Matrix has 16 valves.
The 2004 Toyota 4Runner has 24 valves.
The 2004 Toyota Prius has 16 valves.
The 2004 Toyota Camry has 16 valves.
The 2004 Toyota Tacoma has 16 valves.
The 2004 Toyota Sequoia has 32 valves.
The 2004 Toyota RAV4 has 16 valves.
The 2004 Toyota Highlander has 16 valves.