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WagnerBrake Master Cylinder Assembly

AUTHORIZED DEALER

MC79821

Manufacturer Part Number
*Images are for illustrative purpose only. Actual Product may differ.
SKU: WAG-MC79821
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CA $176.20  MSRP
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MC79821

Manufacturer Part Number

Wagner® Brake Hydraulics

Delivering OE-design or better

Wagner® Brake hydraulics deliver improved OE-design products to the aftermarket, providing you the ability to repair and improve a brake system with the finest products available. Featuring extensive engineering and exceptional quality control, Wagner improves upon OE designs when necessary for better fitment and durability. Count on Wagner Brake hydraulics for coverage for foreign and domestic passenger cars, pickups, SUVs, CUVs and vans.

  • Innovative engineering
  • Extensive field testing
  • Exceptional quality control
  • Provides longer brake life and performance
  • Install Wagner with total confidence



Wagner® is the innovator in braking technologies for passenger car, medium-duty and commercial applications. Wagner sets industry standards with leading engineering expertise and a commitment to ensuring that their parts deliver superior braking performance. With comprehensive coverage, Wagner Brake provides all the components necessary for a complete brake repair. Wagner premium products offer exceptional quality all the latest applications.

More Information
Manufacturer Wagner
Manufacturer Part Number MC79821
Manufacturer's Suggested Retail Price (MSRP) 176.20
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This table represents all the 210 compatible vehicles for this part:
MakeModelYear
Application Notes
Additional Information
Chevrolet
C20 Pickup1971
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
C20 Pickup1972
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
C20 Pickup1973
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
C20 Pickup1974
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
C20 Suburban1971
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
C20 Suburban1972
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
C20 Suburban1973
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
C20 Suburban1974
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
C20 Suburban1975
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
C20 Suburban1976
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
C20 Suburban1977
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
C20 Suburban1978
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
C20 Suburban1979
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
C20 Suburban1980
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
C30 Pickup1971
  • Vacuum Boost
  • Except 11M Rear Axle
  • 1-1/4" Bore
Chevrolet
C30 Pickup1972
  • Vacuum Boost
  • Except 11M Rear Axle
  • 1-1/4" Bore
Chevrolet
C30 Pickup1973
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
C30 Pickup1974
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
C201975
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
C201976
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
C201977
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
C201978
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
C201979
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
C201980
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
C301975
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
C301976
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
C301977
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
C301978
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
C301979
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
C301980
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
G30 Van1971
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
G30 Van1972
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
G30 Van1973
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
G30 Van1974
  • Vacuum Boost
  • 6400-8400lb. GVW
  • 1-1/4" Bore
Chevrolet
G301975
  • Vacuum Boost
  • 6400-8400lb. GVW
  • 1-1/4" Bore
Chevrolet
G301976
  • Vacuum Boost
  • 7700-8400lb. GVW
  • 1-1/4" Bore
Chevrolet
G301977
  • Vacuum Boost
  • 7700-8400lb. GVW
  • 1-1/4" Bore
Chevrolet
G301978
  • Vacuum Boost
  • 7700-8400lb. GVW
  • 1-1/4" Bore
Chevrolet
G301979
  • Vacuum Boost
  • 7700-8400lb. GVW
  • 1-1/4" Bore
Chevrolet
G301980
  • Vacuum Boost
  • 7700-8400lb. GVW
  • 1-1/4" Bore
Chevrolet
G301981
  • 7700-8400lb. GVW
  • 1-1/4" Bore
Chevrolet
G301982
  • 1-1/4" Bore
Chevrolet
G301983
  • 1-1/4" Bore
Chevrolet
G301984
  • 1-1/4" Bore
Chevrolet
K20 Pickup1971
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
K20 Pickup1972
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
K20 Pickup1973
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
K20 Pickup1974
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
K20 Suburban1971
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
K20 Suburban1972
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
K20 Suburban1973
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
K20 Suburban1974
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
K20 Suburban1975
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
K20 Suburban1976
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
K20 Suburban1977
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
K20 Suburban1978
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
K20 Suburban1979
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
K20 Suburban1980
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
K201975
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
K201976
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
K201977
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
K201978
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
K201979
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
K201980
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
P20 Van1971
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
P20 Van1972
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
P20 Van1973
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
P20 Van1974
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
P30 Van1971
  • Vacuum Boost
  • Except 11M Rear Axle
  • 1-1/4" Bore
Chevrolet
P30 Van1972
  • Vacuum Boost
  • Except 11M Rear Axle
  • 1-1/4" Bore
Chevrolet
P30 Van1973
  • Vacuum Boost
  • 7.2M Rear Axle H072
  • 1-1/4" Bore
Chevrolet
P30 Van1974
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P201975
  • Vacuum Boost
  • 1-1/4" Bore
Chevrolet
P201976
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
P201977
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
P201978
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
P201979
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
P201980
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
Chevrolet
P201981
  • 13" Rear Brakes
  • 1-1/4" Bore
Chevrolet
P201982
  • 13" Rear Brakes
  • 1-1/4" Bore
Chevrolet
P201983
  • 13" Rear Brakes
  • 1-1/4" Bore
Chevrolet
P201984
  • 7500-8000lb. GVW
  • Hydroboost
  • 1-1/4" Bore
Chevrolet
P201985
  • DIESEL
  • 8000lb. GVW
  • HydroBoost
  • 1-1/4" Bore
Chevrolet
P201986
  • DIESEL
  • 8000lb. GVW
  • HydroBoost
  • 1-1/4" Bore
Chevrolet
P201987
  • DIESEL
  • 8000lb. GVW
  • HydroBoost
  • 1-1/4" Bore
Chevrolet
P201988
  • DIESEL
  • 8000lb. GVW
  • HydroBoost
  • 1-1/4" Bore
Chevrolet
P201989
  • DIESEL
  • 8000lb. GVW
  • HydroBoost
  • 1-1/4" Bore
Chevrolet
P301975
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301976
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301977
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301978
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301979
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301980
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301981
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301982
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301983
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301984
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301985
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301986
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301987
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301988
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301989
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301990
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301991
  • 7600-8200lb. GVW
  • 1-1/4" Bore
Chevrolet
P301992
  • 7600-8200lb. GVW
  • 1-1/4" Bore
GMC
C25 Suburban1975
  • Vacuum Boost
  • 1-1/4" Bore
GMC
C25 Suburban1976
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
C25 Suburban1977
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
C25 Suburban1978
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
C25/C2500 Pickup1971
  • Vacuum Boost
  • 1-1/4" Bore
GMC
C25/C2500 Pickup1972
  • Vacuum Boost
  • 1-1/4" Bore
GMC
C25/C2500 Pickup1973
  • Vacuum Boost
  • 1-1/4" Bore
GMC
C25/C2500 Pickup1974
  • Vacuum Boost
  • 1-1/4" Bore
GMC
C25/C2500 Suburban1971
  • Vacuum Boost
  • 1-1/4" Bore
GMC
C25/C2500 Suburban1972
  • Vacuum Boost
  • 1-1/4" Bore
GMC
C25/C2500 Suburban1973
  • Vacuum Boost
  • 1-1/4" Bore
GMC
C25/C2500 Suburban1974
  • Vacuum Boost
  • 1-1/4" Bore
GMC
C35/C3500 Pickup1971
  • Vacuum Boost
  • Except H110 Rear Axle
  • 1-1/4" Bore
GMC
C35/C3500 Pickup1972
  • Vacuum Boost
  • Except 11M Rear Axle
  • 1-1/4" Bore
GMC
C35/C3500 Pickup1973
  • Vacuum Boost
  • 1-1/4" Bore
GMC
C35/C3500 Pickup1974
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
GMC
C2500 Suburban1979
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
C2500 Suburban1980
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
C251975
  • Vacuum Boost
  • 1-1/4" Bore
GMC
C251976
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
C251977
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
C251978
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
C351975
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
GMC
C351976
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
GMC
C351977
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
GMC
C351978
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
GMC
C25001979
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
C25001980
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
C35001979
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
GMC
C35001980
  • Vacuum Boost
  • 6600-8200lb. GVW
  • 1-1/4" Bore
GMC
G35/G3500 Van1971
  • Vacuum Boost
  • 1-1/4" Bore
GMC
G35/G3500 Van1972
  • Vacuum Boost
  • 1-1/4" Bore
GMC
G35/G3500 Van1973
  • Vacuum Boost
  • 1-1/4" Bore
GMC
G35/G3500 Van1974
  • Vacuum Boost
  • 6200-8400lb. GVW
  • 1-1/4" Bore
GMC
G351975
  • Vacuum Boost
  • 6200-8400lb. GVW
  • 1-1/4" Bore
GMC
G351976
  • Vacuum Boost
  • 7700-8400lb. GVW
  • 1-1/4" Bore
GMC
G351977
  • Vacuum Boost
  • 7700-8400lb. GVW
  • 1-1/4" Bore
GMC
G351978
  • Vacuum Boost
  • 7700-8400lb. GVW
  • 1-1/4" Bore
GMC
G35001979
  • Vacuum Boost
  • 7700-8400lb. GVW
  • 1-1/4" Bore
GMC
G35001980
  • Vacuum Boost
  • 7700-8400lb. GVW
  • 1-1/4" Bore
GMC
G35001981
  • 7700-8400lb. GVW
  • 1-1/4" Bore
GMC
G35001982
  • 1-1/4" Bore
GMC
G35001983
  • 1-1/4" Bore
GMC
G35001984
  • 1-1/4" Bore
GMC
K25 Suburban1975
  • Vacuum Boost
  • 1-1/4" Bore
GMC
K25 Suburban1976
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
K25 Suburban1977
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
K25 Suburban1978
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
K25/K2500 Pickup1971
  • Vacuum Boost
  • 1-1/4" Bore
GMC
K25/K2500 Pickup1972
  • Vacuum Boost
  • 1-1/4" Bore
GMC
K25/K2500 Pickup1973
  • Vacuum Boost
  • 1-1/4" Bore
GMC
K25/K2500 Pickup1974
  • Vacuum Boost
  • 1-1/4" Bore
GMC
K25/K2500 Suburban1971
  • Vacuum Boost
  • 1-1/4" Bore
GMC
K25/K2500 Suburban1972
  • Vacuum Boost
  • 1-1/4" Bore
GMC
K25/K2500 Suburban1973
  • Vacuum Boost
  • 1-1/4" Bore
GMC
K25/K2500 Suburban1974
  • Vacuum Boost
  • 1-1/4" Bore
GMC
K2500 Suburban1979
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
K2500 Suburban1980
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
K251975
  • Vacuum Boost
  • 1-1/4" Bore
GMC
K251976
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
K251977
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
K251978
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
K25001979
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
K25001980
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
P25/P2500 Van1971
  • Vacuum Boost
  • 1-1/4" Bore
GMC
P25/P2500 Van1972
  • Vacuum Boost
  • 1-1/4" Bore
GMC
P25/P2500 Van1973
  • Vacuum Boost
  • 1-1/4" Bore
GMC
P25/P2500 Van1974
  • Vacuum Boost
  • 1-1/4" Bore
GMC
P35/P3500 Van1971
  • Vacuum Boost
  • Except 11M Rear Axle
  • 1-1/4" Bore
GMC
P35/P3500 Van1972
  • Vacuum Boost
  • Except 11M Rear Axle
  • 1-1/4" Bore
GMC
P35/P3500 Van1973
  • Vacuum Boost
  • 7.2M Rear Axle H072
  • 1-1/4" Bore
GMC
P35/P3500 Van1974
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
GMC
P251975
  • Vacuum Boost
  • 1-1/4" Bore
GMC
P251976
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
P251977
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
P251978
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
P351975
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
GMC
P351976
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
GMC
P351977
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
GMC
P351978
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
GMC
P25001979
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
P25001980
  • Vacuum Boost
  • 13" Brakes
  • 1-1/4" Bore
GMC
P25001981
  • 13" Rear Brakes
  • 1-1/4" Bore
GMC
P25001982
  • 13" Rear Brakes
  • 1-1/4" Bore
GMC
P25001983
  • DIESEL
  • 13" Rear Brakes
  • 1-1/4" Bore
GMC
P25001984
  • DIESEL
  • 7500-8000lb. GVW
  • Hydroboost
  • 1-1/4" Bore
GMC
P25001985
  • DIESEL
  • 8000lb. GVW
  • 1-1/4" Bore
GMC
P25001986
  • DIESEL
  • 8000lb. GVW
  • 1-1/4" Bore
GMC
P25001987
  • DIESEL
  • 8000lb. GVW
  • 1-1/4" Bore
GMC
P25001988
  • DIESEL
  • 8000lb. GVW
  • 1-1/4" Bore
GMC
P25001989
  • DIESEL
  • 8000lb. GVW
  • 1-1/4" Bore
GMC
P35001979
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
GMC
P35001980
  • Vacuum Boost
  • 7600-8200lb. GVW
  • 1-1/4" Bore
GMC
P35001981
  • 7600-8200lb. GVW
  • 1-1/4" Bore
GMC
P35001982
  • 7600-8200lb. GVW
  • 1-1/4" Bore
GMC
P35001983
  • 7600-8200lb. GVW
  • 1-1/4" Bore
GMC
P35001984
  • 7600-8200lb. GVW
  • 1-1/4" Bore
GMC
P35001985
  • 7600-8200lb. GVW
  • HydroBoost
  • 1-1/4" Bore
GMC
P35001986
  • 7600-8200lb. GVW
  • HydroBoost
  • 1-1/4" Bore
GMC
P35001987
  • 7600-8200lb. GVW
  • HydroBoost
  • 1-1/4" Bore
GMC
P35001988
  • 7600-8200lb. GVW
  • HydroBoost
  • 1-1/4" Bore
GMC
P35001989
  • 7600-8200lb. GVW
  • HydroBoost
  • 1-1/4" Bore
GMC
P35001990
  • 7600-8200lb. GVW
  • HydroBoost
  • 1-1/4" Bore
GMC
P35001991
  • 7600-8200lb. GVW
  • HydroBoost
  • 1-1/4" Bore
GMC
P35001992
  • 7600-8200lb. GVW
  • HydroBoost
  • 1-1/4" Bore