OE Quality
60-Day Returns

Metelli 55-0138 Clutch Master Cylinder
Reliable Clutch Master Cylinder for Audi and Volkswagen Models
The Metelli 55-0138 clutch master cylinder is engineered to provide consistent hydraulic pressure for smooth clutch operation. Designed specifically for select Audi and Volkswagen vehicles, this component ensures precise engagement and disengagement of the clutch system.
- Constructed from durable aluminum for corrosion resistance and long service life
- Master cylinder bore diameter of 19.05 mm for optimal hydraulic performance
- Compatible with Audi A4, A4 Quattro, A6, A6 Quattro, Allroad Quattro, S4, and Volkswagen Passat models
- OEM-quality fitment to maintain factory specifications and reliability
- Part number 55-0138 for accurate identification and replacement
Product Details and Specifications
The Metelli clutch master cylinder 55-0138 features a 19.05 mm bore diameter, which is critical for maintaining the correct hydraulic pressure within the clutch system. Its aluminum construction offers a balance of strength and lightweight design, reducing the risk of corrosion and wear over time. This part is designed to meet the exact specifications required by Audi and Volkswagen manual transmission systems, ensuring compatibility and dependable performance.
Compatible Vehicles and Applications
This clutch master cylinder is compatible with a range of Audi and Volkswagen models, including the Audi A4, A4 Quattro, A6, A6 Quattro, Allroad Quattro, S4, and the Volkswagen Passat. It is intended for use in manual transmission systems where precise clutch control is necessary for smooth shifting and vehicle operation.
- Restores proper clutch pedal feel and hydraulic pressure
- Eliminates clutch engagement issues such as spongy or stiff pedal response
- Addresses hydraulic fluid leaks or master cylinder failure
- Prevents clutch slippage caused by insufficient hydraulic pressure
- Improves overall transmission shifting performance
Installation Notes and Tips
When installing the Metelli 55-0138 clutch master cylinder, ensure the hydraulic system is properly bled to remove air pockets that can affect clutch performance. Verify compatibility with your specific Audi or Volkswagen model year and transmission type before installation. Use appropriate tools to avoid damage to the aluminum housing during removal and installation.
Quality Assurance and Warranty
Metelli manufactures this clutch master cylinder to meet stringent quality standards, ensuring reliable operation and durability. While specific warranty details are not provided, Metelli parts typically adhere to industry standards for replacement components. Always consult product documentation or your supplier for warranty information related to part number 55-0138.
| Brand | Metelli |
|---|---|
| Part Number | 55-0138 |
| Product Base Material | Aluminum |
| Master Cylinder Bore Diameter | 19.05 |
This part fits 41 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Volkswagen | Passat | 1.8L | L4 | N/A | |
| 2005 | Volkswagen | Passat | 2.8L | V6 | N/A | |
| 2004 | Volkswagen | Passat | 1.8L | L4 | N/A | |
| 2004 | Volkswagen | Passat | 2.8L | V6 | N/A | |
| 2003 | Volkswagen | Passat | 1.8L | L4 | N/A | |
| 2003 | Volkswagen | Passat | 2.8L | V6 | N/A | |
| 2002 | Audi | S4 | N/A | |||
| 2002 | Volkswagen | Passat | 1.8L | L4 | N/A | |
| 2002 | Volkswagen | Passat | 2.8L | V6 | N/A | |
| 2001 | Audi | A4 | 2.8L | V6 | N/A | |
| 2001 | Audi | A4 Quattro | 1.8L | L4 | N/A | |
| 2001 | Audi | A4 Quattro | 2.8L | V6 | N/A | |
| 2001 | Audi | A6 | N/A | |||
| 2001 | Audi | A6 Quattro | 2.7L | V6 | N/A | |
| 2001 | Audi | A6 Quattro | 2.8L | V6 | N/A | |
| 2001 | Audi | Allroad Quattro | 2.7L | V6 | N/A | |
| 2001 | Audi | S4 | 2.7L | V6 | N/A | |
| 2001 | Volkswagen | Passat | 1.8L | L4 | N/A | From Ch 3B-W-070 001 |
| 2001 | Volkswagen | Passat | 2.8L | V6 | N/A | From Ch # 3B-W-070001 |
| 2000 | Audi | A4 | 2.8L | V6 | N/A | |
| 2000 | Audi | A4 Quattro | 1.8L | L4 | N/A | |
| 2000 | Audi | A4 Quattro | 2.8L | V6 | N/A | |
| 2000 | Audi | A6 | N/A | |||
| 2000 | Audi | A6 Quattro | 2.7L | V6 | N/A | |
| 2000 | Audi | A6 Quattro | 2.8L | V6 | N/A | |
| 2000 | Audi | S4 | 2.7L | V6 | N/A | |
| 2000 | Volkswagen | Passat | 1.8L | L4 | N/A | From Ch 3B-W-070 001 |
| 2000 | Volkswagen | Passat | 2.8L | V6 | N/A | From Ch # 3B-W-070001 |
| 1999 | Audi | A4 Quattro | 1.8L | L4 | N/A | |
| 1999 | Audi | A6 | 2.8L | V6 | N/A | |
| 1999 | Audi | A6 Quattro | 2.8L | V6 | N/A | |
| 1999 | Volkswagen | Passat | 1.8L | L4 | N/A | From Ch 3B-W-070 001 |
| 1999 | Volkswagen | Passat | 2.8L | V6 | N/A | From Ch # 3B-W-070001 |
| 1998 | Audi | A4 Quattro | 1.8L | L4 | N/A | |
| 1998 | Audi | A6 | 2.8L | V6 | N/A | |
| 1998 | Audi | A6 Quattro | 2.8L | V6 | N/A | |
| 1998 | Volkswagen | Passat | 1.8L | L4 | N/A | To Ch 3B-W-070 000 |
| 1998 | Volkswagen | Passat | 2.8L | V6 | N/A | To Ch # 3B-W-070000 |
| 1997 | Audi | A4 | 2.8L | V6 | N/A | From 3/97 |
| 1997 | Audi | A4 Quattro | 1.8L | L4 | N/A | From 3/97 |
| 1997 | Audi | A4 Quattro | 2.8L | V6 | N/A | From 3/97 |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.