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Bexar Pro Components Universal GM-Style Cast Iron Master Cylinder | 1-Inch Bore

$55.95

Fitment Lookup:

Select your vehicle to verify compatibility before ordering.

 
 
SKU: BPC-MC1921H Category: Brand:

Bexar Pro Components Universal GM-Style Cast Iron Master Cylinder | 1-Inch Bore

SKU: BPC-MC1921H

Bexar Pro Components GradeIn Stock: Ships in Neutral Industrial Packaging

“Precision engineered to restore maximum stopping force for both heavy-duty fleet reliability and premium automotive applications.”

Transition your vintage platform to a secure modern footprint with the Bexar Pro Components Premium Cast Iron Master Cylinder. Explicitly built for universal light-duty truck and commercial utility variants, this layout optimizes reliable line pressure across traditional hydraulic configurations. Engineered to deliver unyielding line pressure stability and excellent fluid displacement performance under continuous heavy vocational cycles. Only include the master cylinder installation guide link for BRAKE master cylinders; do not include it for OTHER PRODUCTS. View Master Cylinder Installation Guide
Specification Detail
Component Type Dual-Reservoir Hydraulic Master Cylinder
Bore Size 1-Inch Bore Diameter
Material Durable Heavy-Duty Cast Iron Housing
Fluid Outlets Dual Side Ports (Industry-Standard INV Flare Fittings)
Mounting Format Universal GM-Style 2-Bolt Flange Interface
Includes reservoir caps and fluid seals

🛠️ Expert Installation & Field Note

Based on our shop experience specializing in heavy-duty brakes since 1985:

  • Bench Bleeding: Never skip bench bleeding the master cylinder assembly on a vice before mounting to the firewall or booster face. Trapped air pockets inside the cast iron bores create persistent spongey pedal issues.
  • Pushrod Depth: Always verify piston cup depth against your existing brake pedal pushrod length to ensure full travel range before final hydraulic hard-line torque sequences.
  • Fluid Compatibility: Use clean DOT 3 or DOT 4 brake fluid only.
CRITICAL: Verify Specifications

Ensure your existing hydraulic system uses inverted flare (INV) fitting interfaces. Standard metric or pipe-thread adapters will fail to seat correctly inside the cast iron bore ports, leading to catastrophic system pressure failure.

Bexar Pro Components

Brake Component BPC-MC1921H

Heavy-Duty Stopping Power for Classic Fleets & Utility Platforms

Quality Support Since 1985

Weight 9 lbs
Dimensions 10 × 6 × 6 in

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