Mopar 68091278AE Brake Master Cylinder

Mopar Brake Master Cylinder for 2018 Wrangler

This Mopar brake master cylinder, part number 68091278AE, is a direct-fit hydraulic component for the 2018 Jeep Wrangler with BR6 anti-lock 4-wheel disc HD brakes and XBU stop-start multiple VSM system. It is built for the factory brake system layout used on this application and supports consistent hydraulic pressure at the master cylinder.

Key Features

• Genuine Mopar brake master cylinder for OE-style replacement
• Fits 2018 Jeep Wrangler, N/A
• Configured for BR6 anti-lock 4-wheel disc HD brakes
• Supports XBU stop-start multiple VSM system applications
• Supersedes part number 68091278AD
• Part number 68091278AE for ordering and fitment verification

Detailed Description

Use this brake master cylinder when servicing the hydraulic brake system on a 2018 Jeep Wrangler. The master cylinder is the primary pressure source for the brake hydraulics, and correct OE fitment matters for pedal feel, fluid movement, and system response. This Mopar 68091278AE replacement is listed for the Wrangler configuration with BR6 anti-lock 4-wheel disc HD brakes and XBU stop-start multiple VSM system, making it the correct match for that specific vehicle setup. If you are searching for a 2018 Jeep Wrangler brake master cylinder or Mopar 68091278AE replacement, this part matches the cataloged application.

Common Uses

• Restoring brake pedal firmness after master cylinder wear
• Replacing a leaking hydraulic master cylinder
• Addressing inconsistent brake pressure or pedal travel
• Correcting brake system performance concerns tied to internal seal failure

Installation Notes and Tips

Verify the BR6 and XBU equipment codes before installation to confirm the correct 2018 Jeep Wrangler application. Inspect the brake hydraulic system, lines, and fluid condition during replacement, and bleed the system according to factory service procedures after installation. Confirm the part number 68091278AE against the removed component and vehicle build data before final assembly.

Quality Assurance

Mopar OE replacement parts are cataloged to match factory vehicle applications. This part supersedes 68091278AD and is identified for the listed 2018 Jeep Wrangler brake system configuration.