Bosch 42011651 Disc Brake Rotor - Rear

Bosch QuietCast Rotor for Porsche Rear Brakes

The Bosch QuietCast Rotor 42011651 is a rear disc brake rotor for select Porsche applications, including Porsche 718 Boxster, Porsche 718 Cayman, Boxster, and Cayman models. With a product height of 2.633858 in, this rotor is built for direct rear brake service where accurate fitment matters.

Bosch QuietCast Rotor parts are positioned as OE-style brake components for drivers replacing worn rear rotors on Porsche 718 Boxster and Porsche Cayman platforms. Part number 42011651 also cross-references 98735240101 for the same application.

Key Features

• Rear disc brake rotor for select Porsche models
• Product height: 2.633858 in
• Bosch QuietCast Rotor line for OE-style brake service
• Direct fit coverage for multiple Porsche rear brake applications
• Part number 42011651 for easy catalog matching

Detailed Description

This Bosch QuietCast Rotor is engineered for rear brake replacement on Porsche sports cars across multiple model years. Compatible With 2018-2025 Porsche 718 Boxster, rear; 2019-2025 Porsche 718 Cayman, rear; 2017-2018 Porsche 718 Cayman, rear; 2017 Porsche 718 Boxster, rear; 2013-2016 Porsche Boxster, rear, w/o ceramic rotors; 2014-2016 Porsche Cayman, rear, w/o ceramic rotors; 2005-2012 Porsche Boxster, rear; and 2007-2012 Porsche Cayman, rear. The Bosch QuietCast Rotor 42011651 supports rear brake service where the original rotor specification must match the vehicle platform and brake package.

What It Helps Address

• Rear brake rotor wear from normal mileage and heat cycling
• Brake pulsation caused by rotor thickness variation or runout
• Reduced braking consistency from scored or uneven rotor surfaces
• Noise or vibration associated with worn rear rotors
• Service replacement for Porsche rear brake maintenance

Installation Notes and Tips

Verify rear axle fitment by year, model, and brake configuration before ordering. This rotor is listed for Porsche Boxster and Cayman applications without ceramic rotors where noted, so confirm the existing brake package on the vehicle. Inspect pads, caliper condition, and hub mounting surfaces during installation to help ensure proper rotor seating and braking performance.

Quality Assurance

Bosch QuietCast Rotor components are cataloged for precise vehicle-specific fitment and OE-style brake replacement. Part number 42011651 is listed for rear Porsche applications and cross-references 98735240101.