Adjustable front seats for the LX-model Mustang and upgraded engine air sensors for all models are the only significant updates for 1989. The 25th anniversary of the Mustang is celebrated with a galloping pony badge placed on the dash of all Mustangs built between April 17, 1989 and April 17, 1990.
1FA - Ford Motor Co.
B - Restraint system (B-active belts)
P - Passenger car
40 - Body code (40 - 2dr LX, 41 - 3dr LX, 42 - 3dr GT, 43 - 3dr GT, 44 - 2dr
LX convertible, 45 - 2dr GT convertible)
A - Engine code
6 - Check digit (varies)
K - Year (J - 1989)
F - Plant (F-Dearborn)
000001 - Consecutive unit number
Example:
1FABP40A6KF000001
Location: Stamped on the plate which is riveted to the driver's side of the
dash, visible through windshield; the certification label is attached to the
rear face of the driver's door.