Bosch 50011479 Disc Brake Rotor - Front

Bosch QuietCast Rotor for Front Brake Service

The Bosch QuietCast Rotor, part number 50011479, is a front disc brake rotor for select Lexus and Toyota applications. It is built for vehicles that need a direct-fit rotor replacement with OE-style dimensions and consistent braking performance.

Key Features

• Front disc brake rotor from Bosch QuietCast Rotor
• Product height: 1.944882 in
• Vehicle fitment for Lexus NX300, NX300h, NX200t, RX350, RX450h, Toyota Highlander, and Toyota Sienna
• OE cross-reference part numbers: 435120E030 and 4351248110
• Part number 50011479 for catalog and service matching

Fitment and Application Details

This Bosch QuietCast Rotor is matched to front brake applications across multiple Lexus and Toyota models. Fits 2020-2021 Lexus NX300, front; Fits 2020-2021 Lexus NX300h, front; Fits 2020 Toyota Sienna, front; Fits 2018-2019 Lexus NX300, front; Fits 2015-2019 Lexus NX300h, front; Fits 2008-2019 Toyota Highlander, front; Fits 2011-2019 Toyota Sienna, front; Fits 2015-2017 Lexus NX200t, front; Fits 2017 Lexus RX450h, front; Fits 2010-2015 Lexus RX450h, front; Fits 2010-2015 Lexus RX350, front. This part cross-references OE numbers 435120E030 and 4351248110 for the same application.

What This Rotor Helps Address

• Front brake pulsation caused by worn rotor surfaces
• Brake noise related to uneven rotor wear
• Reduced stopping consistency from heat-affected rotors
• Service replacement needs on Lexus NX300 and Toyota Highlander front brakes
• Front rotor wear on Lexus RX350, RX450h, and Toyota Sienna applications

Installation Notes and Tips

Confirm rotor diameter, hub fit, and brake system configuration before installation. Clean the hub mounting surface, inspect pads and caliper hardware for wear, and verify rotor runout after installation. For best results, replace rotors in pairs on the same axle and follow the vehicle manufacturer’s brake service procedure.

Quality Assurance

Bosch QuietCast Rotor parts are cataloged as OE-style brake service components for direct replacement use. Part number 50011479 is listed for front applications on the confirmed Lexus and Toyota fitments above.