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Vehicle Info NeededACDELCOPART NUMBER: 065-84939473
CYLINDER ASM-BR (SLP-1)
$10499
Ships on 09/11/2026
Lowest Price GuaranteePart TypeBrake Master Cylinder Bracket
BrandACDELCO
Sensor IncludedYes
Mounting Hole Quantity2
Signs Of Wear & Troubleshooting - Section 1 - Bullet 1Difficulty stopping the vehicle.
Primary Outlet Thread Diameter (In)0.49
Dust Boot IncludedNo
Bore TypeStepped
Reservoir TypeSingle
Master Cylinder Bore Diameter38.1
Bleeder Screw IncludedNo
Push Rod IncludedNo
Mounting Bracket IncludedNo
Good Maintenance Practices - Section 1 - Bullet 1Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Good Maintenance Practices - Section 1 - Bullet 4Check the thickness of your brake pads.
Features & Benefits - Bullet 6GM regularly updates production and service part designs to integrate new materials and technologies
Good Maintenance Practices - Section 1 - Bullet 5The following should be conducted by a qualified technician:
Master Cylinder Cap IncludedYes
Good Maintenance Practices - Section 1 - Bullet 2Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Good Maintenance Practices - Section 1 - Bullet 3Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this, but consult a qualified technician if necessary).
Features & Benefits - Bullet 2Contributes to the hydraulic braking system
Features & Benefits - Bullet 3Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
Features & Benefits - Bullet 4GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
Secondary Outlet Thread Diameter (In)0.49
Features & Benefits - Bullet 5GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
Reservoir IncludedYes
Reservoir StyleRemovable
Product DescriptionGM Genuine Parts Brake Master Cylinders are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These brake master cylinders are part of the hydraulic braking system that stores the brake fluid. When the brake pedal is applied, pressure is forced against a small moveable piston in the master cylinder. This pushes the hydraulic fluid through the lines and forces the brake pads against the disc brake rotor. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Features &#38; Benefits - Bullet 1Stores hydraulic braking fluid
Port Quantity2
Good Maintenance Practices - Section 1 - HeaderThe following inspections and maintenance procedures can help prevent potential brake problems.
Gasket Or Seal IncludedYes
Brake Booster IncludedNo
Width (In)8.75
Mounting Hardware IncludedNo
Good Maintenance Practices - Section 1 - Bullet 9Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
Good Maintenance Practices - Section 1 - Bullet 6Inspection of the brake hoses for brittleness or cracking.
Brake Pressure Switch(S) IncludedNo
Bleeder Hoses IncludedNo
Good Maintenance Practices - Section 1 - Bullet 10Inspection of wheel bearings and grease seals.
Height (In)5.38
Good Maintenance Practices - Section 1 - Bullet 11Parking brake adjustments (as needed).
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 2A low or sinking brake pedal.
Primary Outlet Thread Diameter (Mm)12.53
Length (In)10.38
Reservoir MaterialPlastic
Weight (Lb)13.73
Secondary Outlet Thread Diameter (Mm)12.53
Piston Quantity2
Grade TypeOE
Vendor Part Number84939473
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
