Dynamite Friction 631-73044L Disc Brake Rotor - Front Left

Drilled and Slotted Front Left Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver, part number 631-73044L, is a vented front left disc brake rotor built for select Audi applications. It features a slotted X drilled surface, a zinc silver hat finish, and a rust resistant coating for a clean, service-ready appearance.

Use this rotor when you need a direct replacement for the front left position on compatible Audi A4, A4 Quattro, A6, A6 Quattro, A8, and A8 Quattro models. The directional braking surface and 312 mm outside diameter support the specified OE-style fitment for these vehicles.

Key Features

• Part number 631-73044L
• Front left disc brake rotor
• Slotted X drilled surface type
• Vented rotor construction
• Directional brake surface
• Outside diameter: 312 mm
• Nominal thickness: 25 mm
• Discard thickness: 23 mm
• Center hole diameter: 68 mm
• 5-bolt pattern with 112 mm bolt circle
• Zinc silver hat finish
• Rust resistant coating: Yes

Product Details

The DFC Brake Rotor - Drilled and Slotted - Silver line focuses on application-specific brake rotor replacement with a performance-oriented surface design and corrosion protection. This rotor uses a plain disc finish with a zinc silver hat finish and is built with five lug holes, a 112 mm bolt circle, and a 15.5 mm stud or lug hole diameter. The part number 631-73044L is listed for the front left position on select Audi platforms, including 2002-2005 Audi A4, 2002-2004 Audi A4 Quattro, 2002-2004 Audi A6, 2002-2004 Audi A6 Quattro, 1997-1999 Audi A8, 1997-1999 Audi A8 Quattro, and specific 2000 and 2006 Audi A8 applications.

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

Common Reasons to Replace

• Front brake rotor wear beyond discard thickness
• Brake pulsation from rotor variation or uneven wear
• Surface scoring, grooves, or heat checking
• Corrosion on the rotor hat or braking surface
• Noise or vibration during braking on Audi A4, A4 Quattro, A6, A6 Quattro, A8, or A8 Quattro models

Installation Notes

Verify the rotor matches the front left position, 312 mm diameter, 5-lug 112 mm bolt pattern, and 68 mm center bore before installation. Confirm vehicle-specific notes such as wheel size, chassis number, production date, and tire fitment where listed for Audi A6, A6 Quattro, A8, and A8 Quattro applications. Always inspect pads, caliper condition, and hub surfaces during brake service.

Quality Assurance

Dynamite Friction supplies this rotor as a specification-based replacement part with corrosion-resistant coating and application-specific dimensions for the listed Audi fitments. Part number 631-73044L is built to match the stated rotor size, thickness, and directional surface requirements for the confirmed applications.