Raybestos MC39052 Element3 Brake Master Cylinder 1.125 in. Bore Cast Iron

The Raybestos MC39052 Element3 New Brake Master Cylinder is a direct-replacement hydraulic brake component engineered to match OE fit, form, and function. Part of the Raybestos Element3 Hydraulics line, this master cylinder is built from durable cast iron and precision-machined to deliver consistent, reliable braking performance.

Key Features:

• 1.125 in. bore size for proper brake fluid pressure and pedal feel
• Cast iron construction for strength, wear resistance, and long-term durability
• Dual reservoir (bowl) design for split-circuit brake system compatibility
• 100% end-of-line pressure tested to ensure leak-free, consistent performance
• Ready to bench bleed and install — no assembly required
• Primary port thread: 9/16"-18; Secondary port thread: 1/2"-20
• Two mounting holes with 0.423 in. diameter for secure, accurate fitment
• Meets or exceeds OEM specifications

OEM Cross-References:

• General Motors: 18002064, 18002069, 18004253, 18005307, 18014644
• Centric Parts: 130.62071
• Bendix / Mighty: 11749
• CARDONE Reman: 10-1749, 13-1749

The Raybestos Element3 Hydraulics line is designed to give technicians a new part that installs as cleanly as the original, backed by Raybestos' rigorous quality assurance standards. Sold individually.