Dynamic Friction 820-73066L Disc Brake Rotor - Rear Left

Overview

This Dynamic Friction DFC Geoperformance Rotor - Drilled disc brake rotor is built for rear left applications with a vented, directional design and X-drilled surface. It is a fitment-based replacement for select Audi and Porsche models, including Audi A4 allroad, Audi Q5, and Porsche Macan applications.

Part number 820-73066L is engineered with a plain disc finish, Geospec Silver Grey hat finish, and rust-resistant coating for added surface protection. The rotor uses a 330 mm outside diameter, 5-lug pattern, and 112 mm bolt circle for the specified applications.

Key Features

• DFC Geoperformance Rotor - Drilled product line for performance-oriented brake service
• X-drilled, vented rotor construction for directional brake surface operation
• Rust-resistant coating with Geospec Silver Grey hat finish
• 330 mm outside diameter with 5-bolt, 112 mm bolt circle configuration
• Rear left fitment for select Audi and Porsche applications

Detailed Description

The 820-73066L disc brake rotor is a rear left replacement for a wide range of Audi and Porsche vehicles, including Audi A4 allroad, Audi A5, Audi A6 Quattro, Audi Q5, Audi S4, Audi S5, Audi SQ5, Audi A7 Sportback, and Porsche Macan. Fitment spans model years from 2008 through 2026, with application notes that include specific brake package and caliper configurations where required.

As part of the DFC Geoperformance Rotor - Drilled line, this rotor combines a drilled surface with a vented structure to support brake heat management and consistent surface contact. The directional braking surface and coated finish are intended for drivers replacing a rear left rotor on Audi A4 allroad, Audi Q5, or Porsche Macan platforms that call for this exact specification. Part number 820-73066L should be matched to the listed fitment notes before installation.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Uses

• Correcting rotor wear, scoring, or surface rust on the rear left brake corner
• Replacing a rotor that no longer meets discard thickness specifications
• Restoring braking performance after heat checking or uneven wear
• Servicing vehicles with drilled rotor requirements and specific caliper/package notes

Installation Notes

Verify the rear left position, 330 mm diameter, 5-lug pattern, and application notes before ordering. Several fitments require package-specific or caliper-specific confirmation, such as 338 mm front disc references, silver calipers, black optic plus package, red calipers, or dual-piston caliper notes. Match the rotor to the vehicle’s brake configuration and confirm disc thickness requirements during service.

Quality Assurance

Dynamic Friction supplies this rotor as part of the DFC Geoperformance Rotor - Drilled line, with a rust-resistant coating and coated hat finish for added surface protection. Part number 820-73066L is built to the listed specifications for the confirmed Audi and Porsche applications.