Bosch QuietCast rear brake rotor for Lexus RX350/RX450h & Toyota Highlander/Sienna — 1-Pack, coated, precision-balanced

Bosch QuietCast 50011501 is a premium rear disc brake rotor engineered to deliver balanced, low-noise braking performance for select Lexus RX350/RX450h and Toyota Highlander/Sienna models.

This Bosch QuietCast rotor is a direct-fit, single-pack replacement designed to match OEM vane layouts, ABS tone ring requirements, and fitment specifications for the listed Lexus and Toyota applications. It combines factory milling, corrosion-resistant coating, and clear service markings to make installation straightforward and to help maintain reliable stopping power and long service life.

What makes this rotor quieter and smoother than generic replacements?

QuietCast rotors are factory precision balanced and use an OEM-style vane configuration to reduce vibration and pedal pulsation. Those engineering details improve rotor stability under load so you get more consistent, quieter braking feel.

• Precision mill-balancing distributes weight evenly for smooth rotation
• OEM-style internal vanes optimize heat dispersion and limit warping
• Engineering aimed at reducing brake vibration and audible noise

How does the rotor resist rust and stay looking good?

The rotor features an aluminum/zinc protective coating that delays surface corrosion and keeps the visible braking surface cleaner, especially beneficial for open-wheel designs. That finish helps maintain appearance and reduces the chance of rust-related surface pitting that can shorten rotor life.

• Aluminum/zinc plating protects against salt and moisture
• Cleaner visible surface complements alloy wheels
• Coating extends usable life before service or replacement

Will this rotor work with my vehicle’s ABS and wear checks?

On applications that require it, Bosch includes an OEM-style ABS tone ring so the rotor integrates smoothly with factory antilock and traction control systems. Each rotor is also engraved with discard thickness to show when resurfacing or replacement is necessary, removing guesswork at inspection.

• Included ABS tone ring for compatible models ensures system compatibility
• Engraved discard thickness marking for clear service guidance
• Visible Bosch branding verifies authenticity

How does this part compare to an OEM rotor in terms of fit and installation?

QuietCast rotors are manufactured to match OEM dimensions and mounting features so they install like an original part without modification. The single-pack retail format makes it simple to replace one rear rotor at a time while maintaining factory fitment and brake geometry.

• Direct-fit design for listed Lexus and Toyota rear applications
• Same mounting points and vane geometry as OEM pieces
• Sold as a 1-pack — ideal for staggered or phased maintenance

Who this is for: Drivers and independent shops seeking a high-quality, direct-fit rear rotor that mirrors OEM performance and compatibility. This Bosch QuietCast 50011501 suits owners of select Lexus RX350/RX450h and Toyota Highlander and Sienna models who want quieter stopping, corrosion resistance, clear maintenance markings, and guaranteed fit with ABS-equipped vehicles when required.