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GM 25511548 BOOSTER

1982-1985 GM

Customer Questions & Expert Answers (2)
25511548 GM BOOSTER
25511548 GM BOOSTER
  • Part Description
    Booster
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A

  • Related Parts

    Shop for related parts for your vehicle

  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number25511548
    Part DescriptionBooster
    Other NamesBrake Booster
    Item Dimensions15.8 x 10.7 x 7.7 inches
    Item Weight14.70 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU25511548
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65

  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    1982-1985 Buick Regal6 Cyl 3.8L, 6 Cyl 4.1L, 6 Cyl 4.3L Diesel, 8 Cyl 5.7L Diesel2 DOOR, 4 DOOR, REGAL, STATION WAGON
    1982-1985 Chevrolet El Camino6 Cyl 3.8L, 6 Cyl 4.3L, 8 Cyl 4.4L, 8 Cyl 5.0L, 8 Cyl 5.7L DieselCLASSIC 4 DOOR, CLASSIC STATION WAGON, EL CAMINO, MONTE CARLO
    1982-1983 Chevrolet Malibu6 Cyl 3.8L, 6 Cyl 4.3L Diesel, 8 Cyl 4.4L, 8 Cyl 5.0L, 8 Cyl 5.7L DieselCLASSIC 4 DOOR, CLASSIC STATION WAGON, EL CAMINO, MONTE CARLO
    1982-1985 Chevrolet Monte Carlo6 Cyl 3.8L, 6 Cyl 4.3L, 6 Cyl 4.3L Diesel, 8 Cyl 4.4L, 8 Cyl 5.0L, 8 Cyl 5.7L DieselCLASSIC 4 DOOR, CLASSIC STATION WAGON, EL CAMINO, MONTE CARLO
    1982-1985 Oldsmobile Cutlass4 Cyl 2.5L, 6 Cyl 3.0L, 6 Cyl 3.8L, 6 Cyl 4.3L Diesel, 8 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L Diesel2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, CUTLASS CALAIS, CUTLASS CRUISER
    1982-1985 Pontiac Bonneville6 Cyl 3.8L, 6 Cyl 4.1L, 8 Cyl 5.0L, 8 Cyl 5.7L Diesel2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, LE 2 DOOR, STATION WAGON
    1982-1985 Pontiac Grand Prix6 Cyl 3.8L, 6 Cyl 4.1L, 8 Cyl 5.0L, 8 Cyl 5.7L Diesel2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, LE 2 DOOR, STATION WAGON

  • Customer Questions & Expert Answers

    Q:
    I would like to confirm if this is the correct part number for my vehicle. Please advise. Thank you.
    A:
    You can Select Your Vehicle to check if 25511548 fits your vehicle.
    Posted and answered by GM Parts Specialist Henry
    Q:
    What is the function and operation of a power Brake Booster on Chevrolet El Camino? Posted by Maurense B.
    A:
    A power brake booster is standard across all models and came with the vacuum system derived from the manifold of the engine. Ideally, vacuum is accumulated in case of a failure in the booster to manage two or three brake applications after which more force such as in any hydraulic system is applied to the brake pedal. Other types of power brake boosters are the Delco-Moraine and Bendix boosters and both work in a similar manner. When the brakes are released the vacuum is possible on both sides of the power piston, the air through the filter enters, and in turn, any air in the circuit is drawn through a narrow passage and into the intake manifold by means of a check valve. When the brake pedal is pressed, this pushes the push rod that in turns moves the air valve thus opens to allow air from the environment into the housing so as to motivate the power piston to operate the hydraulic master piston. As pressure increases the hydraulic reaction plate comes in contact with the reaction levers to feedback to the pedal that the degree of brake has been applied for the driver to feel. When the required braking force has been realized, the power piston stops moving in case of alteration of pressure on the pedal. Venting pedal pressure returns the air valve to engage the power piston thus sealing off supply of atmospheric air and with the help of piston, the hydraulic pressure inside the brake system is relieved by receding into the rear housing. Should there be vacuum failure for instance when the engine is off or when there is a bad vacuum line then the brake pedal can still be applied though at a higher pedal pressure that a normal system. The power brake unit does not need any special degree of maintenance, apart from the inspection of the hoses and the air filter located beneath the boot on the side of the push rod from the pedal. Removal of the power brake unit requires special tools and it is best to get a new or re-manufactured unit as replacement on the occurrence of a problem if not warrantied by the company.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Xavier / Feb 27, 2024

Genuine GM Part 25511548, the Right Choice

To ensure reliability, purchase GM part # 25511548 BOOSTER. It is sometimes referred to as GM Brake Booster. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Buick Regal models. It fits Chevrolet El Camino, Malibu, Monte Carlo. It also fits Oldsmobile Cutlass. This also fits Pontiac Bonneville, Grand Prix.

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