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Raybestos MC39968 Brake Master Cylinder
| Brand | Raybestos MC39968 |
|---|---|
| Mounting Hole Quantity | 2 |
| Master Cylinder Material | Aluminum |
| Mounting Hole Diameter | 0.354 |
| Bore Size | 0.938 |
| Number of Ports | 2 |
| Primary Port Thread A | M10x1 |
| Secondary Port Thread A | M10x1 |
| Product line | Element3; New |
| Fits | Honda · 2 vehicles |
Aluminum construction. Helps keep the brake master cylinder lightweight and corrosion resistant.
Dual-port design. Supports clean hydraulic routing with two M10x1 ports.
Element3 line. Part of Raybestos' brake hydraulics lineup.
Cross-references Beck/Arnley 072-8573, Carlson 13255 and Centric Parts 130.40016 for the same application. See all 26.
Raybestos MC39968 Brake Master Cylinder
Raybestos MC39968 is an aluminum brake master cylinder for select 1990-1991 Honda Civic applications. Built for vehicles with a 0.938 bore and dual M10x1 ports, it supports consistent hydraulic pressure for dependable brake pedal response.
Key Features
- Brake master cylinder for 1990-1991 Honda Civic
- Raybestos Element3; New product line
- Aluminum master cylinder construction
- 0.938 bore size for hydraulic system compatibility
- 2 mounting holes with 0.354 mounting hole diameter
- 2 ports with M10x1 primary and secondary port threads
- Part number MC39968 for catalog lookup and cross-reference
Product Details
The Raybestos Element3; New line focuses on replacement brake hydraulics for direct-fit service applications. MC39968 is specified with an aluminum body, two mounting holes, and dual M10x1 ports, making it a practical replacement brake master cylinder for 1990-1991 Honda Civic models. The bore size and port thread configuration are key details for matching the hydraulic system during brake service. This part number, MC39968, is also referenced across multiple aftermarket catalogs for the same application.
This part cross-references Dorman - First Stop M39968 and Centric Parts 130.40016 for the same application.
Common Brake Issues It May Address
- Low or inconsistent brake pedal pressure
- Internal master cylinder leakage
- Brake fluid bypass causing pedal fade
- Hydraulic performance loss from a worn master cylinder bore
- Brake warning symptoms tied to master cylinder wear
Installation Notes and Tips
Verify bore size, port thread type, and mounting hole layout before installation. Confirm the vehicle application as 1990-1991 Honda Civic and compare the original master cylinder configuration to MC39968. After installation, bleed the brake system thoroughly and inspect all hydraulic connections for leaks.
Quality Assurance
Raybestos brake hydraulics are cataloged with detailed fitment and dimensional specifications to support accurate replacement selection. The Element3; New line provides a clearly identified service part for brake system maintenance on select Honda Civic models.
| Year | Make | Model | Submodel | Body Type | # Doors | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1991 | Honda | Civic | EX | Sedan | 4 Door | N/A | Element3; New |
| 1990 | Honda | Civic | EX | Sedan | 4 Door | N/A | Element3; New |
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