Toyota tundra 2003 User Manual page 204

The vehicle identification number (VIN) is
also on the Certification Label.
198
'03 TUNDRA_U (L/O 0307)
—Engine number
5VZ−FE engine
2UZ−FE engine
The engine number is stamped on the
engine block as shown.
2003 TUNDRA from Jul. '03 Prod. (OM34430U)