Vacuum Pump Tapper 074145307B

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A vacuum pump tappet in a car is an essential component that plays a critical role in the vacuum system. It is responsible for creating and maintaining the necessary vacuum pressure that assists various systems within the vehicle. The tappet is typically driven by the engine's camshaft, which keeps it synchronized with the engine's rotation.

When the engine is running, the vacuum pump tappet works by utilizing the intake stroke of the engine to generate vacuum pressure. It achieves this by creating a seal and utilizing a reciprocating piston mechanism. As the piston moves back and forth, it creates a vacuum by drawing air out of the system. This vacuum pressure is subsequently utilized by several systems in the car, such as the brake booster, HVAC system, and emissions control devices.