HomeCentric 130.34004 Brake Master Cylinder
Part #: 130.34004

Centric 130.34004 Brake Master Cylinder

Centric Premium Brake Master Cylinders
9 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Centric Premium Brake Master Cylinders
Fitment: BMW, 633CSi, 528i, 530i, 630CSi, 3.0Si, 3.0CS, 3.0CSi, 3.0S, Bavaria, 2800, 2.8 Bavaria, 2500, and 3.0CSL
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Overview of Centric Premium Brake Master Cylinder 130.34004

The Centric Premium Brake Master Cylinder 130.34004 is engineered for reliable brake hydraulics performance in BMW 528i and 530i models. Designed with precision, this brake master cylinder ensures consistent brake pressure and responsiveness for your vehicle's braking system.

  • Compatible with BMW 528i and 530i models
  • Constructed from durable cast iron for long-lasting strength
  • Plastic removable reservoir for ease of maintenance
  • Straight bore design with a 0.906 inch (23 mm) bore diameter
  • Includes 5 ports with M10-1.00 bubble flare outlet threads
  • Mounting hardware, brake booster, reservoir, and push rod not included

Features of Centric Premium Brake Master Cylinders

The Centric Premium Brake Master Cylinders product line focuses on delivering dependable brake hydraulics components that meet or exceed OEM specifications. This line emphasizes quality materials such as cast iron master cylinder bodies and precision-machined bores to ensure optimal brake fluid pressure and durability. The removable plastic reservoir design facilitates easier servicing and fluid replacement, making it a practical choice for BMW brake system repairs.

Detailed Product Description

This Centric Premium Brake Master Cylinder (part number 130.34004) is specifically designed for BMW 528i and 530i vehicles, providing a direct replacement for the original brake master cylinder. The cast iron construction offers robust resistance to wear and corrosion, while the straight bore with a 0.906 inch (23 mm) diameter ensures consistent hydraulic pressure. The unit features five ports with M10-1.00 bubble flare threads on both primary and secondary outlets, supporting secure brake line connections. Note that this assembly does not include mounting hardware, brake booster, reservoir, push rod, or bleeder hoses, so these components must be sourced separately if needed.

Common Applications and Problem Resolution

  • Restores proper brake fluid pressure in BMW 528i and 530i brake systems
  • Replaces worn or leaking master cylinders causing brake pedal sponginess
  • Addresses brake fluid leaks from damaged or corroded master cylinder bodies
  • Improves brake responsiveness and pedal feel after master cylinder failure
  • Supports brake system rebuilds requiring OEM-spec master cylinder components

Installation Notes and Tips

  • Ensure compatibility with BMW 528i and 530i models before installation
  • Bleed the brake system thoroughly after installation to remove air
  • Verify all brake line connections use M10-1.00 bubble flare fittings for proper sealing
  • Replace mounting hardware and related components if worn or damaged, as they are not included
  • Inspect brake booster and reservoir condition during installation, as these are sold separately

Quality Assurance and Warranty

Centric Premium Brake Master Cylinders are manufactured to meet strict quality standards, using cast iron and precision machining to ensure durability and performance. While specific warranty details for part number 130.34004 should be confirmed at the point of purchase, Centric typically offers limited warranties covering defects in materials and workmanship. This part is designed to provide reliable service life when installed and maintained according to manufacturer guidelines.

BrandCentric
Part Number130.34004
PositionCentric Premium Brake Master Cylinders
Bleeder Hoses IncludedNo
Bore Size0.906
Bore Size23.000
Bore TypeStraight
Boss, Nipple or Port: Bottom [cntrc]M10-1.00 bbl
Boss, Nipple or Port: Front, Left: #A [cntrc]M10-1.00 bbl
Boss, Nipple or Port: Front, Left: #B [cntrc]M10-1.00 bbl
Boss, Nipple or Port: Rear: #A [cntrc]M10-1.00 bbl
Boss, Nipple or Port: Rear: #B [cntrc]M10-1.00 bbl
Brake Booster IncludedNo
Cylinder Bore Dia in0.9060
Cylinder Bore Dia mm23.00
Master Cylinder Bore Diameter0.906
Master Cylinder Bore Diameter23.000
Master Cylinder Cap IncludedNo
Master Cylinder MaterialCast Iron
Mounting Bracket IncludedNo
Mounting Hardware IncludedNo
Mounting Hole Quantity2
Port Quantity5
Primary Bore Diameter0.906
Primary Bore Diameter23.000
Primary Outlet Flare TypeBubble
Primary Outlet Flare Type [cntrc]Bubble
Primary Outlet Thread Diameter10.000
Primary Outlet Thread Pitch1.00
Primary Outlet Thread SizeM10-1.00
Publication Bore [cntrc]23mm
Push Rod IncludedNo
Push Rod Lgth / Depth1.92
Push Rod: Length / Depth [cntrc] in1.92
Reservoir IncludedNo
Reservoir MaterialPlastic
Reservoir StyleRemovable
Secondary Outlet Flare TypeBubble
Secondary Outlet Flare Type [cntrc]Bubble
Secondary Outlet Thread Diameter10.000
Secondary Outlet Thread Pitch1.00
Secondary Outlet Thread SizeM10-1.00
Weight [cntrc] kgs1.45
Weight [cntrc] lbs3.2

This part fits 9 vehicles. Search below:

YearMakeModelPositionNotes
1981BMW528iN/ACentric Premium Brake Master Cylinders
1980BMW528iN/ACentric Premium Brake Master Cylinders
1979BMW528iN/ACentric Premium Brake Master Cylinders
1978BMW530iN/ACentric Premium Brake Master Cylinders
1977BMW530iN/ACentric Premium Brake Master Cylinders
1976BMW530iN/ATo 1/76; Centric Premium Brake Master Cylinders
1976BMW530iN/AFr 9/76; Centric Premium Brake Master Cylinders
1976BMW530iN/AFr 2/76 - To 8/76; Centric Premium Brake Master Cylinders
1975BMW530iN/ACentric Premium Brake Master Cylinders

* 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.