Toyota Lexus LS400 1UZFE Petrol Fuel Injector Injection Unit 23250-50020

Toyota Lexus LS400 1UZFE Fuel Injector is a component of the gasoline fuel system designed for precise fuel metering in the 1UZ‑FE V8 engine. A properly selected injector ensures stable engine operation, proper running smoothness, and predictable performance across the entire RPM range.

Specifications and technical data

• SKU: 2320950020
• Mark: Lexus
• Condition: Used
• OEM Part Number: 2320950020
• Substitutable numbers: 2320950020, 23209-50020, 2325050020, 23250-50020
• Fuel type: Petrol
• Category: Fuel Injectors

Purpose and Role of the Injector in the Lexus LS400 1UZ‑FE

The offered fuel injector for the Lexus LS400 with a 1UZ‑FE engine belongs to the category of injector nozzles and is a component of the gasoline engine's injection system. Its task is to atomize fuel under the correct pressure and within a precisely defined time, so that the fuel-air mixture is homogeneous and repeatable in each operating cycle.

A properly functioning injector nozzle directly influences:

• stable idle speed without misfires,
• smooth acceleration without jerking or interruptions in fuel supply,
• maintaining the correct exhaust gas composition and efficient catalytic converter operation,
• economical fuel consumption while preserving factory power parameters.

Construction and Operating Characteristics in a Gasoline System

The injector is designed to work with the gasoline fuel system in the 1UZ‑FE engine. The nozzle's design allows for proper fuel atomization in the intake manifold or directly at the intake valve (depending on the solution used in a specific engine variant), which promotes uniform cylinder filling.

Key functional features of this type of injector include:

• precise fuel dose control by the engine control unit,
• repeatable spray pattern ensuring even combustion in each cylinder,
• resistance to thermal conditions within the engine bay,
• ability to operate under a wide range of loads – from idle to full load.

Condition, Selection, and Installation Aspects

The component comes from the group of original Lexus parts and is offered as a used component. This type of injector is particularly useful for servicing aging 1UZ‑FE units when symptoms of uneven running, increased fuel consumption, or localized overheating due to inconsistent fuel metering appear.

When selecting an injector for the Lexus LS400, it is worth paying attention to:

• compatibility with the specific 1UZ‑FE engine version and vehicle year,
• use of appropriate seals during installation to avoid leaks in the intake and fuel systems,
• correct seating in the fuel rail and proper connection of the electrical connector.

It is recommended to perform adaptation and engine parameter checks after replacing the injector, so that the control unit can optimize injection times and fuel trims.

Benefits of Using a Functional Injector in the Lexus LS400

Replacing a worn injector nozzle with a functional component in the Lexus LS400 with a 1UZ‑FE engine allows for the restoration of the powertrain's factory characteristics. The most important benefits include:

• smoother operation of the V8 engine across the entire RPM range,
• better throttle response and predictable acceleration,
• reduced risk of mechanical damage resulting from lean or overly rich mixtures in individual cylinders,
• ability to maintain correct exhaust emission parameters, which is important during periodic technical inspections.

Related Lexus Injector Nozzles and Technical Knowledge

If you are looking for other Lexus injector nozzles for various models of this brand, check availability in the Lexus injector nozzles category, where you will find a wide selection of fuel system components tailored to specific powertrains.

To deepen your knowledge about typical injection system problems, it is worth reading the article discussing the symptoms and consequences of neglecting diesel injector service: diesel injector faults – how to recognize them and what their neglect entails. Although it concerns diesel engines, the diagnostic principles and consequences of incorrect fuel metering described there are also helpful when analyzing gasoline systems.