HomeCentric 131.62003 Brake Master Cylinder
Part #: 131.62003

Centric 131.62003 Brake Master Cylinder

C-TEK Standard Brake Master Cylinder
43 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$66.38Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
Out of Stock
OE Direct Replacement — Bolt-on fit, no modifications needed
C-TEK Standard Brake Master Cylinder
Fitment: Oldsmobile, Buick, Chevrolet, GMC, and Pontiac, Cutlass Calais, Century, Regal, El Camino, Malibu, Monte Carlo, Caballero, Cutlass, Cutlass Cruiser, Cutlass Salon, Cutlass Supreme, Grand Am, Grand LeMans, Grand Prix, and LeMans
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Centric C-TEK Standard Brake Master Cylinder 131.62003

The Centric C-TEK Standard Brake Master Cylinder 131.62003 is engineered for reliable brake hydraulics performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Designed to meet OEM specifications, this brake master cylinder ensures consistent braking pressure and fluid control for models like the Cutlass, Malibu, and Monte Carlo.

  • Durable cast iron master cylinder body
  • Plastic single reservoir with removable style
  • Includes master cylinder cap and reservoir
  • Two mounting holes for secure installation
  • Primary bore diameter of 0.945 inches (24.000 mm)
  • Two ports with inverted flare threads: 1/2"-20 primary and 9/16"-18 secondary
  • Compatible with Buick Century, Chevrolet El Camino, Oldsmobile Cutlass, Pontiac Grand Prix, and more

Details on the C-TEK Standard Brake Master Cylinder Line

The C-TEK Standard Brake Master Cylinder line by Centric focuses on delivering dependable brake hydraulics components that align with factory fit and function. This product line emphasizes quality materials such as cast iron for the master cylinder and plastic for the reservoir, providing a balance of durability and corrosion resistance. The 131.62003 part number represents a standard bore size and port configuration suitable for a range of GM vehicles, ensuring compatibility and ease of replacement.

Technical Description and Specifications

This brake master cylinder features a cast iron body for strength and longevity, paired with a plastic reservoir that is removable for maintenance convenience. The single reservoir design supports brake fluid storage with included master cylinder cap to maintain system integrity. It has two mounting holes for secure attachment and two ports with inverted flare threads—primary outlet at 1/2"-20 and secondary outlet at 9/16"-18—allowing proper brake line connections. The bore diameter measures 0.945 inches (24.000 mm), providing consistent hydraulic pressure for braking systems in compatible vehicles.

Applications and Problem Solving

  • Replaces worn or leaking brake master cylinders in Buick Century and Chevrolet Malibu
  • Restores proper brake fluid pressure for Oldsmobile Cutlass and Pontiac Grand Prix
  • Eliminates brake pedal sponginess caused by internal cylinder wear
  • Addresses brake fluid reservoir leaks with included plastic reservoir and cap
  • Supports brake system reliability in Chevrolet El Camino and Pontiac Grand Am

Installation Notes and Tips

  • Ensure vehicle compatibility with Buick, Chevrolet, Oldsmobile, and Pontiac models listed
  • Bleeder hoses and mounting hardware are not included; reuse existing components or source separately
  • Carefully align mounting holes and secure with appropriate fasteners
  • Check and refill brake fluid after installation to avoid air in the system
  • Verify proper thread engagement on primary and secondary outlet ports during brake line connection

Quality Assurance and Warranty

The Centric C-TEK Standard Brake Master Cylinder 131.62003 is manufactured to meet or exceed OEM standards for brake hydraulics components. The use of cast iron and quality plastic materials ensures durability and corrosion resistance. While specific warranty details are not provided, Centric products typically come with a limited warranty covering defects in materials and workmanship. Proper installation and maintenance are essential to maximize product lifespan and performance.

BrandCentric
Part Number131.62003
PositionC-TEK Standard Brake Master Cylinder
Bleeder Hoses IncludedNo
Bore Size0.945
Bore Size24.000
Bore TypeStraight
Boss, Nipple or Port: Front, Left: #A [cntrc]9/16"-18 inv
Boss, Nipple or Port: Rear: #A [cntrc]1/2"-20 inv
Brake Booster IncludedNo
Master Cylinder Bore Diameter0.945
Master Cylinder Bore Diameter24.000
Master Cylinder Cap IncludedYes
Master Cylinder MaterialCast Iron
Mounting Bracket IncludedNo
Mounting Hardware IncludedNo
Mounting Hole Quantity2
Port Quantity2
Primary Bore Diameter0.945
Primary Bore Diameter24.000
Primary Outlet Flare TypeInverted
Primary Outlet Flare Type [cntrc]Inverted
Primary Outlet Thread Diameter0.500
Primary Outlet Thread Size1/2"-20
Primary Outlet Threads Per Inch20
Publication Bore [cntrc]24mm
Push Rod IncludedNo
Push Rod: Length / Depth [cntrc] indmpl
Reservoir IncludedYes
Reservoir MaterialPlastic
Reservoir StyleRemovable
Reservoir TypeSingle
Secondary Outlet Flare TypeInverted
Secondary Outlet Flare Type [cntrc]Inverted
Secondary Outlet Thread Diameter0.5625
Secondary Outlet Thread Size9/16"-18
Secondary Outlet Threads Per Inch18
Weight [cntrc] kgs2.14
Weight [cntrc] lbs4.7

This part fits 43 vehicles. Search below:

YearMakeModelFuel TypePositionNotes
1984OldsmobileCutlass CalaisGASN/AC-TEK Standard Brake Master Cylinder
1983OldsmobileCutlass CalaisGASN/AC-TEK Standard Brake Master Cylinder
1982OldsmobileCutlass CalaisGASN/AC-TEK Standard Brake Master Cylinder
1981OldsmobileCutlass CalaisGASN/AC-TEK Standard Brake Master Cylinder
1980BuickCenturyN/AC-TEK Standard Brake Master Cylinder
1980BuickRegalN/AC-TEK Standard Brake Master Cylinder
1980ChevroletEl CaminoN/AC-TEK Standard Brake Master Cylinder
1980ChevroletMalibuN/AC-TEK Standard Brake Master Cylinder
1980ChevroletMonte CarloN/AC-TEK Standard Brake Master Cylinder
1980OldsmobileCutlassGASN/AC-TEK Standard Brake Master Cylinder
1980OldsmobileCutlass CalaisGASN/AC-TEK Standard Brake Master Cylinder
1980OldsmobileCutlass CruiserGASN/AC-TEK Standard Brake Master Cylinder
1980OldsmobileCutlass SalonGASN/AC-TEK Standard Brake Master Cylinder
1980OldsmobileCutlass SupremeGASN/AC-TEK Standard Brake Master Cylinder
1980PontiacGrand AmN/AC-TEK Standard Brake Master Cylinder
1980PontiacGrand LeMansN/AC-TEK Standard Brake Master Cylinder
1980PontiacGrand PrixN/AC-TEK Standard Brake Master Cylinder
1980PontiacLeMansN/AC-TEK Standard Brake Master Cylinder
1979BuickCenturyN/AC-TEK Standard Brake Master Cylinder
1979BuickRegalN/AC-TEK Standard Brake Master Cylinder
1979ChevroletEl CaminoN/AC-TEK Standard Brake Master Cylinder
1979ChevroletMalibuN/AC-TEK Standard Brake Master Cylinder
1979ChevroletMonte CarloN/AC-TEK Standard Brake Master Cylinder
1979OldsmobileCutlassGASN/AC-TEK Standard Brake Master Cylinder
1979OldsmobileCutlass CalaisGASN/AC-TEK Standard Brake Master Cylinder
1979OldsmobileCutlass SalonGASN/AC-TEK Standard Brake Master Cylinder
1979OldsmobileCutlass SupremeGASN/AC-TEK Standard Brake Master Cylinder
1979PontiacGrand AmN/AC-TEK Standard Brake Master Cylinder
1979PontiacGrand LeMansN/AC-TEK Standard Brake Master Cylinder
1979PontiacGrand PrixN/AC-TEK Standard Brake Master Cylinder
1979PontiacLeMansN/AC-TEK Standard Brake Master Cylinder
1978BuickCenturyN/AC-TEK Standard Brake Master Cylinder
1978BuickRegalN/AC-TEK Standard Brake Master Cylinder
1978ChevroletEl CaminoN/AC-TEK Standard Brake Master Cylinder
1978ChevroletMalibuN/AC-TEK Standard Brake Master Cylinder
1978ChevroletMonte CarloN/AC-TEK Standard Brake Master Cylinder
1978OldsmobileCutlassN/AC-TEK Standard Brake Master Cylinder
1978OldsmobileCutlass CalaisN/AC-TEK Standard Brake Master Cylinder
1978OldsmobileCutlass SalonN/AC-TEK Standard Brake Master Cylinder
1978OldsmobileCutlass SupremeN/AC-TEK Standard Brake Master Cylinder
1978PontiacGrand AmN/AC-TEK Standard Brake Master Cylinder
1978PontiacGrand LeMansN/AC-TEK Standard Brake Master Cylinder
1978PontiacLeMansN/AC-TEK Standard Brake Master Cylinder

* 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.