
Booster/Master Brake Cylinder Combo, 9", For A129-4 Kit – A28138
SKU- A28138
Regular price $272.009-Inch Booster/Master Cylinder Combo for A129-4 – A28138
SSBC-USA A28138 combines a 9-inch brake booster with a 1-1/8-inch bore master cylinder for compatible A129-4 and select power-brake Corvette-style applications where specified.
Product Details
- Part number: A28138
- 9-inch brake booster
- 1-1/8-inch master-cylinder bore
- Compatible replacement application includes select A129-4 systems
- For compatible power-brake applications where specified
Brake System & Fitment
Master-cylinder bore and booster configuration must match the complete brake system. Confirm kit number, pedal and firewall configuration, pushrod requirements, 1-1/8-inch bore requirement and available clearance before ordering.
Bench Bleeding Required
Bench bleed the master cylinder in a vise before installation. Use clean brake fluid specified for the application, keep the return hoses submerged in the reservoir, and slowly stroke the piston until air bubbles are eliminated. Do not allow the reservoir to run dry, and bleed the complete brake system after installation.
Manufacturing Information
The brake booster and master-cylinder components in this assembly are sourced by SSBC-USA and are not manufactured in-house at our Elma, New York facility. Contact Customer Service for confirmed country-of-origin information.
✔ Fitment Confidence: Confirm kit, pedal, firewall, pushrod, bore requirements and brake-system compatibility before ordering. Call (716) 775-6700 if uncertain.
🚚 Shipping: This item ships from our Elma, NY facility. Typical processing time is 5–10 business days, subject to product availability and supplier delays.