ACDELCO
More Information for ACDELCO 18M55
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ACDELCO 18M55  
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ACDELCO 18M55 Specifications
Bleeder Hoses IncludedYes
Bore Size (IN)0.813
Brake Booster IncludedNo
Brake Pressure Switch(s) IncludedYes
Height (IN)5.6
Length (IN)11.3
Master Cylinder Bore Diameter (IN)0.812
Master Cylinder Bore Diameter (MM)20.6248
Master Cylinder Cap IncludedYes
Master Cylinder MaterialIron
Mounting Bracket IncludedNo
Mounting Hole Diameter (IN)0.359
Primary Outlet Thread Diameter (IN)0.406
Primary Outlet Thread Diameter (MM)10
Push Rod IncludedNo
Reservoir IncludedYes
Weight (lb)5.97
Width (IN)7.7
Gold / Professional; Includes Reservoir
ACDelco Professional Brake Master Cylinders use both aluminum and iron castings, making them the high quality replacements.

Features & Benefits:
  • Contain both Ethylene Propylene (EPDM) and Styrene Butadiene (SBR) rubber components to provide superior resistance to heat, corrosion, and leakage
  • Ready to bench bleed and install right out of the box - no assembly required
  • Manufactured to meet OE specifications of fit, form, and function
OEM / Interchange Numbers: 18030297

Warranty Information:
24 Month / Unlimited Mile Warranty
Warranty Details