The part numbers you've provided seem to be references to clutch slave cylinder part numbers for PEUGEOT and potentially other vehicles. The format of the numbers (e.g., 2041 A2, 2041 A3, 2041 85, 2041 98, 9661718680) suggests that these could be genuine OE (Original Equipment) part numbers or aftermarket part numbers.

To find the correct clutch slave cylinder for your PEUGEOT or any other vehicle, it's best to refer to the vehicle's service manual or contact the dealership parts department with your vehicle's identification number (VIN). They can cross-reference the VIN with the appropriate part numbers for clutch components.

Clutch slave cylinders are crucial for the operation of the clutch in a manual transmission vehicle. They are responsible for applying hydraulic pressure to engage and disengage the clutch plate from the flywheel, allowing for smooth gear changes and control of the engine's power output to the transmission.

When a clutch slave cylinder fails or malfunctions, it can lead to difficult clutch engagement, clutch slippage, or a complete loss of clutch function. Symptoms of a faulty clutch slave cylinder may include a spongy clutch pedal, a delay in clutch engagement, or a clutch that does not fully disengage.

Replacing a clutch slave cylinder typically involves removing the existing cylinder, installing the new one, and bleeding the clutch system to remove any air that may have entered the hydraulic lines during the replacement process. It's important to bleed the system properly to ensure that the clutch operates smoothly and without any sticking or grabbing.

If you're looking for a replacement clutch slave cylinder, it's important to ensure that the part you purchase is compatible with your vehicle's make, model, and year. Using an incorrect part can lead to fitment issues, poor performance, or even damage to other components in the clutch system.

When replacing a clutch slave cylinder, it's a good practice to replace the clutch line hoses as well, as they can often be the source of leaks that lead to clutch slave cylinder failure. Additionally, it's important to bleed the clutch system after replacing the slave cylinder to remove any air that may have entered the system, which can cause clutch engagement issues.

If you're not familiar with the replacement process, it's advisable to have the work done by a professional mechanic to ensure that the job is done correctly and safely.