Bosch 20010306 Disc Brake Rotor - Front

Bosch QuietCast Rotor for Front Brake Service

The Bosch QuietCast Rotor, part number 20010306, is a front disc brake rotor for select Ford, Mazda, and Mercury applications. It is built for drivers replacing worn front rotors on vehicles such as the Ford Ranger, Mazda B3000, Mazda B4000, Ford Explorer, and Mercury Mountaineer.

Key Features

• Front disc brake rotor for confirmed vehicle fitment
• Product height: 2.586614 in
• Bosch QuietCast Rotor line for brake service applications
• Part number 20010306 for accurate ordering and replacement matching
• Fits vehicles with front rotor applications across 1995-2003 model years

Fitment Details

• Fits 2003 Mazda B4000, front.
• Fits 1998-2002 Ford Ranger, front.
• Fits 1998-2002 Mazda B3000, front.
• Fits 1998-2002 Mazda B4000, front.
• Fits 1995-2001 Ford Explorer, front.
• Fits 1997-2001 Mercury Mountaineer, front.

Bosch QuietCast Rotor products are positioned for brake replacement work where consistent rotor dimensions and application-specific fitment matter. This rotor, part number 20010306, cross-references ZZP233251A for the same application.

What It Helps Address

• Front brake pulsation caused by worn rotor surfaces
• Brake noise related to uneven rotor wear
• Reduced braking smoothness from rotor scoring or heat damage
• Service replacement needs after rotor inspection failure
• Fitment matching for front brake repair on Ranger, Explorer, Mountaineer, and Mazda B-series trucks

Installation Notes

Confirm front axle fitment before installation and verify rotor dimensions against the removed part. Inspect pads, caliper condition, and hub mounting surfaces during brake service so the new rotor seats correctly. Use proper brake service procedures and torque fasteners to the vehicle manufacturer’s specifications.

Quality Assurance

Bosch QuietCast Rotor parts are backed by Bosch’s brake product engineering and application-specific cataloging for accurate replacement selection. Part number 20010306 helps ensure the correct rotor is selected for the listed front applications.