Throttle Body

Harmonious combustion

The component is a part of the air intake system, sitting between the air filter box and the intake manifold.

It adjusts the airflow to the engine, based on the accelerator pedal’s position. It might include sensors or valves for a precise control and, in some models, connects to a vacuum line or coolant circuit for temperature regulation.

Pushing of the accelerator rotates the throttle plate, allowing the air in, and, with the ECU and MAF sensor’s input, adjusts fuel injection for optimal air-fuel mix.

Consider the premium-quality aftermarket throttle body from Nissens. It is designed and tested to meet the Genuine Nissens Quality standard, ensuring excellent performance and long, trouble-free operation.

The Difference

Range & Availability

Nissens’ throttle body program covers the most popular applications and has been developed based on a thorough analysis of the market & car parc coverage data. The initial range of 77 items covers 280 OE numbers and 33% of the European car parc and is already being further expanded.
One-stop-shop

Key engine efficiency system’s spare parts from a renowned supplier.
The entire Nissens range of efficiency and emission system parts caters to over 9,000 OE numbers and includes turbos, intercoolers, EGR valves, modules, and coolers.
Well packed

All Nissens Throttle Bodies are safely packed, guaranteeing protection against transportation damages and dirt ingression.
Genuine Nissens Quality

Developed and tested for excellent performance, and long, trouble-free operation. Nissens Throttle Body is a product thoroughly tested in a complete functional, high-temperature endurance, durability, load, and corrosion test series.
Easy and Safe Installation

The product fits the engine layout precisely, and the necessary installation parts are included in the product box (First Fit product) whenever needed, and depending on the application:
• O-ring
• Gaskets
• Clip
Efficient, Reliable & Safe

The product is fully compatible with the vehicle, ensuring harmonious operation from the very first start of the engine. It ensures an excellent performance within the efficiency system, supporting optimal engine combustion process and emissions control system’s operation.

Technical Details

The throttle body’s design, operation and functions depend on the engine type.

PETROL ENGINE - THROTTLE VALVES
The throttle body regulates the airflow (mixture control).

Possible Functions:

• Idle control
• Speed control
• ASR traction control
• Fuel consumption control
• Emission control

DIESEL ENGINE - REGULATING THROTTLE VALVES
The throttle body increases the manifold vacuum.

Function:

• Exact metering of the exhaust gas recirculation rate
• Prevention of shaking after the engine is switched off by closing the valve when the engine is turned off
• Essential component for regenerating the diesel particulate filter

There are a few symptoms of a malfunctioning throttle body, resulting in engine running failures:

• irregular idling speed
• incorrect acceleration
• stalling

Internal contaminations are the most common cause of throttle body's malfunction, resulting in a faulty air supply control due to limited movement of the throttle valve.

Another reason for engine failure is vacuum leaks that lead to inconsistencies between the amount of air sucked into the system and throttle valve’s position.