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.