Injector Pump

ALH = 1998 to 2003 ALH motors
1Z/AHU = 1995 to 1998 1Z and AHU motor

Alternator

A = 2000 and later
B = 1995 to 1999

Needle Lift Sensor

A = 2003.5
B = 1995 to 2003

N75 Valve
A = 2000 and later
B = 1995 to 1999

Crank Position Sensor

A = 2000 and later
B = 1995 to 1999