The clutch slave cylinder, i.e. clutch slave cylinder or clutch booster cylinder or clutch slave cylinder, is a key component in the clutch system. It is usually located inside the clutch assembly and works in conjunction with the clutch pedal and clutch pressure plate to engage and disengage the clutch.

When the driver depresses the clutch pedal, the clutch master cylinder transmits a hydraulic or pneumatic signal to the clutch slave cylinder (i.e., the clutch servo cylinder), which pushes the clutch pressure plate to separate from the friction plate, cutting off the power transfer between the engine and the transmission. When the driver releases the pedal, the spring in the slave cylinder resets the piston, allowing the clutch to re-engage.

Regarding the cost of replacing the clutch slave cylinder, this cost can be affected by a variety of factors, including the model year, the price of the part, the pricing of the repair store, and the skill level of the mechanic. Therefore, it is impossible to give a specific cost figure. However, in general, the cost of replacing the clutch slave cylinder may include the following parts:

1. Parts Cost: The price of the clutch slave cylinder will vary depending on the model and brand. Some high-end models or special models may have higher prices for clutch slave cylinders.

2. Labor cost: Replacing the clutch slave cylinder requires a certain amount of maintenance skill and experience, so labor cost is also part of the replacement cost. The cost of labor will also be affected by the pricing strategy of the repair store.

3. Other costs: During the replacement process, if it is found that other related parts also need to be replaced or repaired, such as replacing hydraulic fluid, seals or other related parts, then these costs will also be included in the total cost.

Based on the references, the following is a range of costs for replacing the clutch slave cylinder:

- In the U.S., the average cost of replacing a clutch slave cylinder is between $290 and $260, with parts costing an average of $100 to $115 and mechanic's hours costing around $110 to $145. However, the actual cost may vary depending on the model of the vehicle and the location of the repair.

  - The average cost of replacing a clutch slave cylinder in the UK is £125, with prices ranging from £70 to £200. For certain makes such as Ford and Volvo, the cost can be as high as £500.

It is worth noting that if the vehicle has a Concentric Slave Cylinder, this type of slave cylinder is part of the internal mechanism of the clutch and is usually included in a clutch replacement kit, so the cost of replacement may be higher.

In order to get an accurate cost of replacing the clutch slave cylinder, car owners are advised to visit a regular auto repair store or 4S store for a consultation and quote. During the consultation, car owners should provide detailed information about their car model and vehicle condition so that the repair store can give a more accurate quote.

Overall, the cost of replacing the clutch slave cylinder varies according to a variety of factors, including the make and model of the vehicle, the region where it is located as well as the repair service provider, the price of the parts, the cost of labor and time, etc., and car owners need to make choices and decisions based on the actual situation.