Magneti Marelli throttle body housing designed as a direct-fit replacement for selected Citroën and Peugeot models with 2.2 16V engines. This component restores correct air intake regulation, helping to eliminate rough idle, loss of power and erratic throttle response. The part is frequently searched and ordered by its product code 163615, so it is ideal for workshop technicians and experienced DIYers who prefer to identify parts by reference number.

Technical Information

• Manufacturer: Magneti Marelli
• Model: Citroën C8; Peugeot 406, 407, 607, 807 (2.2 16V Engines)
• Product Codes: 163615
• Additional Numbers: 163615 NFP

Function And Symptoms

The throttle body controls the volume of air entering the engine by regulating the throttle plate opening. It works together with the engine management system to ensure correct air–fuel mixture across all engine loads. Common symptoms of a faulty or contaminated throttle body include unstable or high idle, hesitation under acceleration, reduced engine power, stalling at low revs and illumination of the engine management lamp.

Common Failure Causes

• Carbon and oil buildup on the throttle plate and bore causing sticking or improper sealing.
• Wear or failure of the throttle position sensor or actuator motor (electronic throttles).
• Vacuum leaks or intake tract leaks affecting airflow measurements.
• Electrical connection corrosion or wiring damage leading to intermittent signals.

How Often It Fails

Service life varies with driving conditions and maintenance. Throttle bodies can last well beyond 100,000 km in well-maintained vehicles, but heavy urban driving, frequent short trips and lack of intake service accelerate carbon buildup. Inspect during major service intervals and consider cleaning or replacement if symptoms appear.

Replacement And Installation Guide

High-level replacement steps for qualified personnel or experienced DIY mechanics:

• Ensure Safety: Disconnect the battery before starting work to avoid short circuits and prevent unintended throttle operation.
• Access: Remove the intake ducting and airbox components to access the throttle body.
• Disconnect: Unplug the electrical connector(s) and any vacuum hoses attached to the unit. Label connectors if needed.
• Remove: Unscrew the mounting bolts and remove the throttle body. Replace the gasket if applicable.
• Install: Fit the new throttle body, tighten bolts to the manufacturer’s specified torque, reconnect hoses and connectors, and reassemble the intake components.
• Relearn/Adaptation: Perform throttle adaptation/relearn procedure using a diagnostic tool where possible; otherwise follow the vehicle manufacturer’s prescribed ignition/cycle routine to allow the ECU to recalibrate idle and throttle response.

Installation Recommendations

• Always Replace Gaskets: Fit a new intake/throttle gasket to ensure an airtight seal.
• Use Proper Tools: Use correct fastener torques and avoid overtightening to prevent damage to the housing.
• Clean Surroundings: Clean the mating surfaces and intake tract to minimize contamination entering the engine.
• Diagnostic Check: After installation, run a diagnostic scan to clear any stored fault codes and confirm proper sensor signals and adaptation status.

Why This Part Is Often Searched By Number

Technicians and DIY customers commonly search by the product code 163615 to ensure exact fitment and fast identification. Using the part number reduces the risk of ordering incorrect variants and speeds up procurement for repairs.

Why The Part Most Commonly Fails

The most frequent cause of throttle body failure is carbon contamination that prevents the throttle plate from closing or opening smoothly, leading to poor running and check engine faults. Electronic failures such as a faulty position sensor or actuator motor and electrical connector issues are also common failure modes.

For professional installation, follow the vehicle manufacturer’s service manual procedures and safety guidelines. Order by product code 163615 for a quick match to the models listed above.

Product Overview

Siemens VDO throttle body housing designed for Stellantis 1.4 16V VTi and 1.6 16V VTi petrol engines. This unit is the airflow control element of the intake tract and is supplied under multiple part references including V760491980, V760491980-01, A2C53386323 and 163673. It is suitable for a range of Citroën and Peugeot models and is intended for professional fitment or experienced DIY mechanics who maintain or repair VTi engines.

Compatible Models

• Citroën Berlingo B9
• Citroën C3 (including C3 II and C3 Picasso)
• Citroën C4 II
• DS3
• Peugeot 207
• Peugeot 308
• Peugeot Partner Tepee

Function And Application

The throttle body regulates the amount of air entering the engine in response to driver input (accelerator pedal) and the engine control unit. Proper operation ensures correct air–fuel ratio, stable idle, predictable throttle response and prevents limp-home modes. On modern VTi engines the throttle assembly works with sensors and actuators (throttle plate, motor/actuator, and position sensor) to provide electronic throttle control.

Technical Information

• Manufacturer: Siemens VDO (OEM Supplier for Stellantis)
• Model: For 1.4 16V VTi And 1.6 16V VTi Engines
• Product Codes: V760491980, V760491980-01, A2C53386323
• Other Numbers: 163673

Replacement Procedure

• Disconnect Battery: Always disconnect the negative battery terminal before starting to avoid electrical damage.
• Access Throttle Body: Remove intake hose and any airbox components blocking access.
• Unplug Electrical Connectors: Carefully release connectors and vacuum hoses attached to the unit.
• Remove Fasteners: Unbolt the throttle body from the intake manifold and remove the old gasket.
• Fit New Unit: Install new gasket if required, mount the throttle body and tighten bolts to the manufacturer torque specification.
• Reassembly And Adaptation: Reconnect all hoses and connectors, reconnect battery and perform throttle adaptation/learn procedure as specified by the manufacturer using diagnostic equipment or following the service manual steps.

Installation Recommendations

• Replace Gasket: Always fit a new intake/throttle gasket and inspect the mounting surface for carbon or deposits.
• Clean Adjacent Components: Clean intake tract and EGR passages if heavily contaminated to prevent recontamination of the new unit.
• Use Proper Tools: Use appropriate torque tools and avoid over-tightening fasteners to prevent warping or leaks.
• Perform Adaptation: Execute throttle relearn or adaptation via diagnostic tool (DiagBox or equivalent) or follow the vehicle’s service manual to ensure correct idle and throttle response.

Why The Part Fails

Common causes of throttle body faults include carbon and oil buildup on the throttle plate and bore, contamination from PCV/EGR systems, wear or failure of the throttle motor or position sensors, and corrosion or damaged wiring/connectors. Symptoms typically appear as rough idle, unstable idle speed, reduced engine power, poor throttle response or illumination of the engine warning lamp. Failure tendency depends on driving style and maintenance; carbon buildup often becomes noticeable after prolonged service intervals or when intake maintenance is neglected.

Notes For Mechanics And DIYers

This part is aimed at professional workshops and experienced DIYers servicing Citroën and Peugeot VTi engines. Keep part numbers V760491980, V760491980-01, A2C53386323 and 163673 handy when searching or ordering to speed up identification and ensure correct fitment.

Siemens VDO throttle body V757669780 (163636) designed for Citroën and Peugeot 1.4 16V VTi and 1.6 16V VTi engines. Direct-fit replacement for vehicles listed below, this unit controls intake airflow and provides throttle position feedback to the engine management system. Commonly searched under product codes V757669780, 757669780-02, 757669780-04 and reference 163636. Suitable for professional workshops and experienced DIY mechanics who perform throttle body replacement and calibration.

Description

The throttle body is a critical component of the air intake system on drive-by-wire petrol engines. It regulates the volume of air entering the engine based on input from the accelerator pedal and the engine control unit. Modern Siemens VDO units include an electronic throttle actuator and position sensor to provide accurate, fast response and stable idle control. Replacing a failing throttle body restores correct idle, throttle response and fuel efficiency.

Technical Information

• Manufacturer: Siemens VDO
• Model: 1.4 16V VTi, 1.6 16V VTi; Vehicle Applications: Citroën Berlingo B9, Citroën C3, Citroën C3 II, Citroën C3 Picasso, Citroën C4 II, DS3, Peugeot 207, Peugeot 308, Peugeot Partner Tepee
• Product Codes: V757669780; V 757669780-02; V 757669780-04; 163636
• Additional Numbers: 757669780-02; 757669780-04; 163636

Installation Recommendations

• Disconnect the battery before starting work and follow the vehicle manufacturer’s safety procedures.
• Remove the intake hose and air box to access the throttle body. Unplug the electrical connector and any vacuum or breather hoses attached.
• Unbolt the throttle body from the intake manifold, inspect and replace the gasket or O-ring with a new one to ensure an airtight seal.
• Clean the mating surfaces and fit the new unit. Tighten bolts to the manufacturer’s torque specification.
• After installation, perform throttle adaptation/idle relearn using a diagnostic tool or follow the vehicle-specific idle learning procedure to ensure correct idle and throttle response.
• Inspect intake hoses, vacuum lines and electrical connectors for damage or corrosion while replacing the unit.

Reason For Failure

Common causes of throttle body malfunction include carbon and soot buildup that restricts flap movement, wear or failure of the throttle position sensor or electronic actuator, contaminated intake air, vacuum leaks at the gasket or hoses, and electrical connector corrosion. Symptoms typically include unstable idle, poor throttle response, limp-home mode, and engine management fault codes. Regular inspection and cleaning of the intake and throttle body area can delay failure, but sensor or actuator faults require replacement.

How To Replace

Replacement is straightforward for technicians familiar with intake systems: remove air intake components, disconnect electrical and vacuum connections, unbolt the throttle body, install the new unit with a new gasket, reconnect hoses and connectors, and perform the required throttle adaptation. If diagnostic faults persist after replacement, check wiring, connectors and related engine management sensors.

Notes For Professionals And DIYers

• Part is intended for the listed engine types and vehicle models—confirm fitment by matching product codes with vehicle documentation before installation.
• Keep intake system components clean during the swap to avoid contamination of the new throttle body.
• If uncertain about throttle adaptation or diagnosing related fault codes, seek assistance from a workshop with PSA-compatible diagnostic equipment.

High-quality replacement throttle body designed for Stellantis 1.4 16V and 1.6 16V petrol engines. Ideal for professional garages and DIY mechanics who need a reliable unit compatible with many Citroën and Peugeot models. Frequently searched by part numbers 1635W2 and 9647925480, this throttle body restores correct air metering, smooth idling and responsive throttle response after faults caused by contamination or wear.

Applications and Fitment

Compatible With: Citroën Berlingo, Citroën C2, Citroën C3, Citroën C3 Pluriel, Citroën C4, Peugeot 206, Peugeot 307, Peugeot Partner. Engines: 1.4 16V and 1.6 16V petrol engines.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: 1.4 16V, 1.6 16V (see vehicle fitment list)
• Product Codes: 1635W2, 1635.W2, 9647925480
• Other Numbers: NFP (reference in supplier listing)

Function And Common Faults

The Throttle Body Controls Airflow Into The Engine By Varying The Position Of The Throttle Plate. It Also Houses The Throttle Position Sensor And Motor/Actuator In Drive-By-Wire Systems. Typical Symptoms Of A Failing Unit Include Erratic Idle, Stalling, Poor Throttle Response, Engine Management Light And Reduced Power Modes.

Why This Part Fails

• Carbon And Soot Buildup On The Throttle Plate Causing Stickiness Or Restricted Airflow.
• Wear Or Failure Of The Throttle Position Sensor Or Actuator Electronics.
• Corroded Or Damaged Electrical Connectors And Wiring.
• Vacuum Leaks At The Throttle Body Gasket Or Intake Manifold.

How Often It Fails

Failure Depends On Driving Conditions And Maintenance. Units In Urban Or Dusty Environments Tend To Accumulate Carbon Faster. Many Throttle Bodies Show Issues After 100,000 Km, But This Varies Widely With Use And Service History.

Replacement Procedure

1. Disconnect Battery Before Starting Work To Prevent Electrical Damage And Avoid Faults.
2. Remove Intake Hose And Any Sensors Or Vacuum Lines Attached To The Throttle Body. Label Hoses If Necessary.
3. Unbolt The Throttle Body From The Intake Manifold And Remove The Old Gasket.
4. Fit New Gasket And Install Replacement Throttle Body. Tighten Fasteners To The Manufacturer’S Spec Or Until Secure; Use Correct Torque If Available.
5. Reconnect Electrical Connector, Sensors And Intake Hose. Ensure Connectors Are Clean And Free Of Corrosion.
6. Perform Throttle Adaptation/Idle Relearn According To Manufacturer Procedure Using A Diagnostic Tool Or By Following The Approved Relearn Steps After Reconnection.

Installation Recommendations

• Always Replace The Throttle Body Gasket And Inspect The Intake For Oil Or Carbon Deposits.
• Clean Surrounding Surfaces And Air Inlet To Minimize Contamination.
• Do Not Force Electrical Connectors; Check Pins For Damage Or Corrosion.
• Follow Manufacturer’S Procedures For Throttle Relearn. If No Exact Procedure Is Available, Use A Diagnostic Tool To Reset Adaptations.
• Check For Vacuum Leaks And Intake System Integrity After Installation.

Recommended Tools

Basic Hand Tools, Torque Wrench (If Available), Clean Rags, Brake Cleaner Or Throttle Cleaner For Surrounding Areas, Diagnostic Interface For Throttle/Idle Relearn.

Why Choose This Part

This Throttle Body Offers Direct Fitment For Common Citroën And Peugeot Engines, Clear Cross-References To Popular Part Numbers And A Practical Solution For Restoring Driveability Without Replacing The Entire Intake System. Suitable For Workshops And Experienced DIY Mechanics.

Used throttle body assembly compatible with a range of Citroën and Peugeot petrol engines. This replacement unit fits many 1.4 16V and 1.6 16V applications and is often sought by part numbers 9647925480 and 1635W2. Designed for professional workshops and DIY mechanics who need a direct-fit component to restore correct air intake control, idle stability and throttle response.

Key Benefits

Reliable restoration of air metering and engine idle control. Direct-fit replacement for affected models to eliminate faults such as throttle position sensor errors and idle control warnings. Ideal for vehicles showing fault codes related to throttle position (P0120–P0123) or idle control (P0505).

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Citroën Berlingo, Citroën C2, Citroën C3, Citroën C3 Pluriel, Citroën C4, Peugeot 206, Peugeot 307, Peugeot Partner (1.4 16V / 1.6 16V petrol variants)
• Product Codes: 9647925480, 1635W2, 1635.W2
• Other Numbers: Diagnostic Codes Often Associated: P0120–P0123, P0505

Function And Common Faults

The throttle body controls the amount of air entering the engine by means of a butterfly plate and associated position sensing. On modern petrol engines the assembly typically contains the throttle plate, a position sensor (TPS) and an actuator or idle control interface. Common symptoms of a failing throttle body include unstable idle, reduced throttle response, engine warning light illumination and fault codes related to throttle position or idle control.

Why Throttle Bodies Fail

Most failures are caused by carbon and oil deposits building up on the throttle plate and bore, which restrict movement and corrupt position readings. Electrical faults in the position sensor or actuator can also occur over time due to moisture, wear or intermittent contacts. Vacuum leaks at the mounting flange or a damaged gasket further upset idle control and engine performance.

Installation Recommendations

Before starting, always disconnect the battery and follow the vehicle manufacturer’s safety guidelines. Typical replacement steps:

• Remove the air intake hose and intake resonator to access the throttle body.
• Disconnect the electrical connector and any vacuum lines attached to the body.
• Unbolt the throttle body from the intake manifold, remove old gasket and clean mating surfaces.
• Fit the new throttle body with a correct gasket, torque bolts to manufacturer specs, reconnect electrical connector and vacuum lines.
• Reconnect the battery and perform throttle adaptation / idle relearn procedure according to the vehicle service manual or using a diagnostic tool.

Professional tools are recommended for proper relearn/initialization to ensure correct idle and throttle response. Replace any damaged hoses or gaskets during installation to prevent future issues.

Replacement Tips For Mechanics And Enthusiasts

Inspect the intake tract and PCV system for oil contamination when installing a new throttle body. If heavy carbon buildup is present, consider cleaning the intake and replacing the intake gasket. Where possible, check for stored diagnostic trouble codes before and after replacement to confirm fault resolution.

Why Choose This Part

This unit carries the common OEM reference numbers used in Citroën and Peugeot service networks and is selected by professionals looking for a reliable direct-fit replacement for 1.4 16V and 1.6 16V petrol engines. Supplying clear part numbers in search queries (e.g. 9647925480, 1635W2) increases the chance of fast, accurate matches when sourcing the correct replacement.