HomeRaybestos MC39878 Brake Master Cylinder
Part #: MC39878

Raybestos MC39878 Brake Master Cylinder

Element3; New, N/A
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OE Direct Replacement — Bolt-on fit, no modifications needed
Element3; New, N/A
Fitment: Eagle, Medallion
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Overview of Raybestos MC39878 Brake Master Cylinder

The Raybestos Element3; New MC39878 brake master cylinder is engineered for reliable brake hydraulics performance. Designed with precision iron construction and specific mounting features, this part supports consistent braking pressure for compatible vehicle models.

  • Constructed from durable iron for long-lasting strength
  • Two mounting holes with 0.343-inch diameter for secure installation
  • 0.813-inch bore size optimized for brake fluid control
  • Four ports including primary and secondary M10x1 threaded ports
  • Part number MC39878 ensures exact replacement fit

Detailed Product Features and Specifications

This brake master cylinder features a robust iron body designed to withstand the demands of brake hydraulic systems. The 0.813-inch bore size allows for precise fluid displacement, critical for maintaining brake pressure and pedal feel. With two mounting holes sized at 0.343 inches in diameter, installation is straightforward and stable. The unit includes four ports, with both primary and secondary ports threaded M10x1, facilitating secure brake line connections. The MC39878 part number identifies this specific configuration, ensuring compatibility with vehicles requiring these exact specifications.

About the Raybestos Element3; New Product Line

The Element3; New line from Raybestos focuses on delivering brake hydraulics components that meet or exceed OEM standards. This product line emphasizes material quality and dimensional accuracy, providing reliable replacements for brake master cylinders. The MC39878 is part of this line, reflecting Raybestos's commitment to durability and performance in brake system components.

Common Applications and Problem Resolution

  • Replacement for worn or leaking brake master cylinders
  • Restores proper brake pedal pressure and responsiveness
  • Addresses brake fluid leakage issues at the master cylinder
  • Corrects inconsistent brake pedal travel or sponginess
  • Supports brake system maintenance for compatible vehicle makes and models

Installation Notes and Tips

Ensure the mounting holes align precisely with the vehicle’s brake system bracket using the 0.343-inch diameter holes. Verify that brake lines match the M10x1 threaded ports for secure connections. Bleed the brake system thoroughly after installation to remove air and restore proper hydraulic pressure. Use appropriate tools to avoid damaging the iron master cylinder body during installation.

Quality Assurance and Warranty

Raybestos manufactures the MC39878 brake master cylinder to meet stringent quality standards. The iron construction and precise machining contribute to reliable performance and durability. While specific warranty details may vary, Raybestos products typically include coverage against manufacturing defects to ensure customer confidence in replacement brake components.

BrandRaybestos
Part NumberMC39878
PositionElement3; New, N/A
Bore Size0.813
Master Cylinder MaterialIron
Mounting Hole Diameter0.343
Mounting Hole Quantity2
Number of Ports4
Primary Port Thread AM10x1
Secondary Port Thread AM10x1

This part fits 0 vehicles. Search below:

YearMakeModelPositionNotes

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

072-867311-40181281312960043130.33405131.3340528963017518513987866-16-2707700734129E150144F115585H20903401M39878MC115585MC48MC511070

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.