Seat belts work for everyone, including pregnant women. Like all occupants, they are more likely to be seriously injured if they do not wear seat belts.

A pregnant woman should wear a lap-shoulder belt, and the lap portion should be worn as low as possible, below the rounding, throughout the pregnancy.
The best way to protect the fetus is to protect the mother. When a seat belt is worn properly, it is more likely that the fetus will not be hurt in a crash. For pregnant women, as for anyone, the key to making seat belts effective is wearing them properly.
Lap-Shoulder Belt
Seat Belt ExtenderIntake Manifold Cleaning and Inspection (LAF, LEA, or LUK) Intake and Forced Induction Intake Manifold
Clean the intake manifold-(1) matingsurfaces.Inspect the intake manifold for damage.Inspect the intake manifold for cracks near metallicinserts.Clean and inspect the intake manifoldinsulator-(2) for damage.Inspect the crankcase ventilation passages-(1) inthe intake manifold face for blockage.Warning ...