Description
Main Brake Master Cylinder BOSCH For Stellantis Vehicles. Removed From A Vehicle With 33,000 km.
High-quality Bosch Main Brake Master Cylinder compatible with a range of Stellantis light commercial vehicles. This unit is a direct-fit replacement often searched by part numbers 1616905480, 1638051480 and 321372, ideal for professional mechanics and experienced DIYers servicing Citroën and Peugeot brake systems. The master cylinder controls hydraulic pressure to the brakes, restoring firm pedal feel and reliable stopping performance when the original unit shows wear or leakage.
Technical Information
- Manufacturer: Bosch
- Model: Citroën Berlingo III, Peugeot Partner III, Peugeot Rifter, Fiat Doblo III, Opel Combo E
- Product Codes: 1616905480, 1638051480, 321372
- Other Numbers: Cross-Reference To Stellantis Applications And OE Numbers As Listed Above
Compatibility
Fits Many Stellantis Small Vans And MPV Platforms, Including:
- Citroën Berlingo III (K9)
- Peugeot Partner III
- Peugeot Rifter
- Fiat Doblo III
- Opel Combo E (K9)
Function And Symptoms Of Failure
The Brake Master Cylinder Converts Pedal Force Into Hydraulic Pressure That Activates Brake Calipers/Wheel Cylinders. Common Symptoms Indicating Replacement:
- Spongy Or Sinking Brake Pedal Travel
- External Brake Fluid Leaks At The Cylinder Or Brake Lines
- Uneven Braking Or Reduced Braking Efficiency
- ABS Or Brake Warning Light May Illuminate If Pressure Is Lost Or Sensors Detect Faults
Installation Recommendations
Prepared For Professional Fitment; Suitable For Experienced DIY Mechanics. Typical Replacement Steps:
- Park On A Level Surface, Secure Vehicle And Use Appropriate Safety Supports.
- Protect Painted Surfaces From Brake Fluid; Wear Eye Protection And Gloves.
- Drain Brake Fluid From Reservoir And Remove Brake Lines Using A Line Wrench To Avoid Damage.
- Unbolt The Master Cylinder From The Brake Booster And Remove The Unit Carefully.
- Install New Unit, Reconnect Brake Lines And Refill With Specified Brake Fluid (Use DOT4 Unless Vehicle Manual States Otherwise).
- Bleed The Entire Brake System Thoroughly; If The Vehicle Has ABS, Perform An ABS-Compatible Bleeding Procedure (Follow Manufacturer Procedure Or Use Diagnostic Tool For ABS Bleed Cycle).
- Check For Leaks, Confirm Correct Pedal Feel, And Road-Test Carefully At Low Speed Before Normal Use.
- Torque Fasteners To Manufacturer Specifications (Refer To Service Manual).
Reason Why The Part Most Commonly Fails
Master Cylinders Tend To Last Many Tens Of Thousands Of Kilometres, But Failures Typically Result From:
- Seal Wear And Internal Deterioration Leading To Internal Bypass And Loss Of Pressure
- Contaminated Or Neglected Brake Fluid Causing Corrosion Of Internal Surfaces
- External Corrosion Or Mechanical Damage From Road Debris
- Rubber Component Ageing, Swelling Or Cracking
Notes For Professionals And DIYers
This Is A Used Unit Removed From A Vehicle With 33,000 km; Condition And Serviceability Should Be Assessed Prior To Installation. Many Customers Search Using The OE Numbers Listed Above, So Verify Fitment Against Your Application And Parts List Before Ordering.
Why Choose This Unit
Direct-Fit Bosch Unit Matched To Several Stellantis Models. Good Option For Technicians Looking For A Cost-Effective Replacement Identified By Common OE Codes. Provides Reliable Hydraulic Control When Installed And Bled Correctly.
