F 150 Heritage 4WD Pickup V8-5.4L SOHC VIN Z Bi-fuel (2004)
Seat Belt Retractor: Description and Operation
Occupant Restraints - Passive - Supplemental Air Bag System
SAFETY BELT RETRACTOR PRETENSIONERS
Vehicle not equipped with seat integrated restraints (SIR), the safety belt retractors are equipped with pretensioners. The belt retractor pretensioners
rotate the safety belt retractors to remove excess slack from the safety belt webbing.
