1NZ Throttle Body

Description

The images display an automotive throttle body, a pivotal component within a vehicle’s air intake system. Its fundamental role is to regulate the precise amount of air entering the engine’s intake manifold. This control is crucial for managing engine speed and power output. When the accelerator pedal is pressed, the throttle body’s internal valve (often a butterfly valve) opens to allow more air into the engine, and conversely, it closes to restrict airflow when the pedal is released. Modern throttle bodies, as this one appears to be, are often electronically controlled (drive-by-wire), eliminating the need for a physical cable connection to the accelerator pedal and allowing for more precise engine management by the vehicle’s ECU.

Constructed typically from durable cast aluminum or similar metal alloys, the throttle body is designed to withstand the varying temperatures and pressures of the engine environment. The images clearly show the main bore where air passes through, along with the butterfly valve inside. Also visible are integrated sensors, such as the Throttle Position Sensor (TPS) and potentially an Idle Air Control (IAC) valve (or integrated into the electronic mechanism), which provide feedback to the engine’s computer. Various vacuum ports and an electrical connector for the control signals are also apparent. The presence of what appears to be a “S.M.” marking suggests a specific manufacturer or model compatibility. This component is essential for smooth engine operation, fuel efficiency, and accurate emissions control.

Key Features & Details:

• Type: Electronic Throttle Body (likely, given modern appearance).
• Material: Durable cast aluminum or similar metal alloy.
• Function: Regulates the precise volume of air entering the engine’s intake manifold.
• Internal Mechanism: Features a butterfly valve that opens and closes to control airflow.
• Integrated Components: Includes or integrates a Throttle Position Sensor (TPS) for ECU feedback, and potentially other control mechanisms.
• Connection Points: Equipped with an electrical connector for ECU communication and various vacuum ports.
• Application: Integral part of the air intake system for gasoline internal combustion engines.
• Condition: Appears to be a used, but functional, automotive part, showing signs of prior use.
• Benefits: Crucial for engine speed control, fuel economy, smooth acceleration, and emissions management.