ACDELCO
More Information for ACDELCO 18M21680
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ACDELCO 18M21680 Specifications
Bleeder Hoses IncludedNo
Brake Booster IncludedNo
Master Cylinder Cap IncludedYes
Master Cylinder MaterialCast Iron
Mounting Bracket IncludedNo
Mounting Hardware IncludedNo
Mounting Hole Quantity2
New Or RemanufacturedNew
Port Quantity1
Pushrod IncludedNo
Reservoir IncludedYes
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: 19384761

Warranty Information:
24 Month / Unlimited Mile Warranty
Warranty Details