Description
Overview
Direct-fit exhaust manifolds designed for PSA Group petrol engines with 1.1, 1.4 and 1.6 8V cylinder heads. This part is suitable for workshop and DIY use when the original manifold shows signs of leakage, cracks or gasket failure. The lambda (oxygen) sensor may not be supplied with the manifold and should be checked separately before installation.
Fitment And Compatibility
Designed to fit Citroen and Peugeot vehicles that use PSA 1.1, 1.4 and 1.6 8V petrol engines. Commonly referenced by OEM and aftermarket codes including 9636962310 and related PSA numbers, this manifold is a typical replacement part for small to compact models fitted with 8‑valve petrol engines.
Function And Common Failure Modes
The exhaust manifold collects exhaust gases from the engine cylinders and channels them to the downpipe and catalytic converter. Typical failure modes include cracked flanges or castings caused by thermal stress, and leaking or deteriorated exhaust gaskets. Symptoms of a failing manifold include a ticking or exhaust leak noise near the engine bay, reduced engine performance, higher fuel consumption, strong exhaust odors and possible trigger of the check engine light.
Replacement Guide
Replacement is straightforward for experienced mechanics and capable DIYers. Key steps:
- Ensure the vehicle is safely supported and the engine is cool.
- Disconnect the battery and, if present, remove or disconnect the downstream oxygen sensor(s).
- Remove heat shields and any components obstructing access to the manifold.
- Unbolt the downpipe and manifold-to-head fasteners, keeping hardware organized for reassembly.
- Clean mating surfaces thoroughly and fit a new exhaust manifold gasket.
- Install the new manifold and tighten fasteners to the manufacturer’s torque specifications. Reconnect the downpipe and oxygen sensor(s), then run the engine and check for leaks.
Avoid overtightening bolts and follow vehicle-specific service manual procedures for the best result.
Materials And Durability
Manufactured to OEM-style standards for durability under high temperatures. Exhaust manifolds are commonly produced from robust materials such as cast iron or high-grade steels to withstand repeated thermal cycling and corrosive exhaust gases.
Technical Information
- Manufacturer: PSA / Citroen / Peugeot
- Model: 1.1, 1.4, 1.6 8V Petrol Engines
- Product Codes: 9636962310
- Other Numbers: 9661916480, 9638982310, 0341F9
Note: The lambda (oxygen) sensor may not be included with the manifold. Confirm sensor part number and condition before installation. If in doubt, consult the vehicle service manual or a professional technician for exact fitment and torque data.
