Raybestos MC390359 Element3 New Brake Master Cylinder 7/8" Bore

The Raybestos MC390359 is a new (not remanufactured) brake master cylinder from the Element3 hydraulics line, engineered to deliver OE-equivalent fit, form, and function. With a 7/8" bore size, this unit is designed as a direct-fit replacement that installs with confidence and performs to original equipment standards.

Key Features:

• New, not remanufactured — precision cast from the ground up for consistent quality
• Precision casting construction that exactly matches the OE design, including OE casting material (aluminum or cast iron as required by application)
• Reduced-weight casting design that does not stress the brake booster mounting
• 7/8" bore size to match stock specifications
• Power brake compatible for applicable fitments
• Dual M10 x 1.0 threaded outlets for secure brake line connections
• Integrated reservoir and cap included — no remote reservoir required
• 100% end-of-line pressure tested in both hot and cold environments to ensure leak-free performance
• Ready to bench bleed and install — no assembly required out of the box
• Sold individually

The Raybestos Element3 hydraulics line is built for long service life using the highest-quality components. Raybestos offers more than 1,600 replacement master cylinder models, covering vehicles from 1947 and up, making it one of the most comprehensive brake hydraulics programs in the aftermarket. UPC: 747730714806.