Bosch QuietCast Premium 328mm Front Brake Rotor (Single) — OE-fit, Low Noise, Corrosion-Resistant

BOSCH QuietCast Premium 328mm front disc brake rotor (part 50011479) is a single, OE-style replacement rotor engineered for smooth, quiet braking on compatible Lexus and Toyota models.

This Bosch QuietCast rotor is built to meet or exceed OE fit and function while resisting rust and vibration. It arrives precision-balanced with an OEM-style vane design and an aluminum/zinc protective coating to keep braking performance consistent and maintain a clean appearance behind open wheels. The rotor also includes Bosch branding and a discard thickness indicator to help you know when it’s time for replacement.

What makes this rotor different from basic replacement rotors?

The QuietCast line focuses on NVH (noise, vibration, harshness) reduction and long-term durability. Factory mill balancing reduces pedal pulsation, and the vane configuration improves heat dispersion so the rotor runs cooler under load. An aluminum/zinc coating delays surface rust that commonly affects uncoated rotors.

• Precision mill-balanced to reduce pedal pulsation
• OEM-style internal vanes for efficient heat dissipation
• Aluminum/zinc coating for corrosion resistance and cleaner appearance
• Engraved Bosch name and discard thickness mark for service guidance

How does this rotor help with vehicle safety systems like ABS and traction control?

On applications that require it, this Bosch rotor is manufactured with an OEM-style ABS tone ring to ensure reliable signal generation for wheel speed sensors. Consistent tone ring dimensions prevent false readings that can trigger unnecessary warnings or compromise ABS and traction control performance. Using a rotor without the appropriate tone ring can affect system feedback and diagnostic trouble codes.

• Includes ABS tone ring on required applications
• Maintains accurate wheel-speed sensor signals
• Reduces risk of ABS or traction control warning lights from incorrect hardware

Will this rotor fit my Lexus or Toyota, and how do I verify compatibility?

This single front rotor (328mm) is listed as compatible with a range of Lexus and Toyota models, but fitment can vary by trim and production year. Always confirm fitment using your vehicle’s VIN or the site’s fit checker before purchase. If you’re unsure, cross-reference part number 50011479 with your service manual or ask a qualified installer.

• Front rotor diameter: 328mm
• Compatible makes/models include select Lexus NX200t, NX300h, RX350, RX450h and Toyota Highlander and Sienna
• Verify using vehicle VIN or fitment tool to confirm trim/engine compatibility

How does Bosch help extend rotor life and make maintenance easier?

Bosch applies an aluminum/zinc protective coating to slow surface rust, which preserves rotor thickness and appearance longer than bare iron rotors. The rotor’s discard thickness marking provides a visual service cue so technicians can replace it before braking performance degrades. Combined with proper pad selection and periodic inspection, this extends service intervals and maintains predictable stopping behavior.

• Corrosion-resistant coating helps prevent surface rust
• Engraved discard thickness indicates when replacement is needed
• OE-style design promotes consistent pad wear and rotor life

Who is this for? Drivers who own compatible Lexus or Toyota models and want an OEM-style front rotor that prioritizes quiet operation, reliable ABS compatibility, and corrosion resistance will benefit from the Bosch QuietCast 328mm rotor. It’s a practical choice for owners seeking a direct-fit, long-lasting replacement that aligns with factory performance expectations and simplifies routine brake service.