Bosch 34011591 Disc Brake Rotor - Front

Bosch QuietCast Rotor for Mazda Front Brakes

The Bosch QuietCast Rotor 34011591 is a front disc brake rotor for select Mazda applications. It is built for 2014-2021 Mazda 3, Mazda 3 Sport, and Mazda CX-3 front brake service, with a product height of 2.027559 in.

Bosch QuietCast Rotor parts are positioned as OE-style brake components for drivers who want a direct-fit replacement for front brake maintenance on Mazda 3 and Mazda CX-3 models. Part number 34011591 is also referenced by interchange number B45A33251A.

Key Features

• Front disc brake rotor for select Mazda vehicles
• Product height: 2.027559 in
• Fits 2014-2018 Mazda 3, front
• Fits 2014-2015 Mazda 3 Sport, front
• Fits 2016 Mazda 3 Sport, front
• Fits 2016-2018 Mazda CX-3, front
• Fits 2019-2021 Mazda CX-3, front
• Bosch QuietCast Rotor line for OE-style brake service

Detailed Description

Bosch 34011591 is a front disc brake rotor for Mazda brake repair and replacement work. The listed fitment covers 2014-2018 Mazda 3 front applications, 2014-2016 Mazda 3 Sport front applications, and 2016-2021 Mazda CX-3 front applications. If you are searching for a Bosch QuietCast Rotor for Mazda 3 front brakes or a Bosch QuietCast Rotor for Mazda CX-3 front brake service, this part number matches those confirmed applications.

The QuietCast Rotor line is Bosch’s brake rotor offering for drivers seeking a direct replacement part in the front brake position. The rotor height is listed at 2.027559 in, which is a useful reference when verifying the part against the original component during brake service. Part number 34011591 cross-references B45A33251A for the same application.

What It Helps Address

• Front brake pulsation from worn rotor surfaces
• Brake noise caused by rotor wear or uneven contact
• Reduced braking consistency during stop-and-go driving
• Rotor replacement needs during pad and brake service
• Fitment matching for Mazda 3, Mazda 3 Sport, and Mazda CX-3 front brakes

Installation Notes and Tips

Verify the vehicle year, model, and front position before installation. Confirm rotor dimensions and compare the removed part to Bosch 34011591, especially when servicing a Mazda 3, Mazda 3 Sport, or Mazda CX-3. Clean the hub mounting surface and inspect related brake components before completing the repair.

Quality Assurance

Bosch QuietCast Rotor 34011591 is backed by Bosch brand manufacturing standards for brake replacement parts. Confirmed fitment is listed for 2014-2021 Mazda front brake applications, including Mazda 3 and Mazda CX-3 models.