Bexar Pro Components Universal GM-Style Cast Iron Master Cylinder | 1-1/8-Inch Bore
$63.95
Select your vehicle to verify compatibility before ordering.
Bexar Pro Components Universal GM-Style Cast Iron Master Cylinder | 1-1/8-Inch Bore
SKU: BPC-MC1321H
“Precision engineered to restore maximum stopping force for both heavy-duty fleet reliability and premium automotive applications.”
| Specification | Detail |
|---|---|
| Component Type | Dual-Reservoir Hydraulic Master Cylinder |
| Bore Size | 1-1/8-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.
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.
| Weight | 9 lbs |
|---|---|
| Dimensions | 10 × 6 × 6 in |
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