HomeBrake > Drums and RotorsDynamite Friction 631-73037L Disc Brake Rotor - Rear Left
Part #: 631-73037L

Dynamite Friction 631-73037L Disc Brake Rotor - Rear Left

DFC Brake Rotor - Drilled and Slotted - Silver, Rear Left
24 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$78.22Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
DFC Brake Rotor - Drilled and Slotted - Silver, Rear Left
Fitment: Audi, A4 and A4 Quattro
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Brake Performance for Audi A4 and A4 Quattro

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver offers a precise fit and enhanced braking for Audi A4 and A4 Quattro models. Designed to meet exact specifications, this rotor ensures consistent stopping power and durability under various driving conditions.

  • Part Number: 631-73037L
  • Disc Type: Solid, drilled and slotted surface
  • Rust resistant zinc silver hat finish
  • Nominal thickness of 12 mm with a discard thickness of 10 mm
  • Directional brake surface for optimized heat dissipation
  • 5 bolt holes with a bolt circle diameter of 112.2 mm
  • Outside diameter of 287 mm and overall height of 36 mm

About the DFC Brake Rotor - Drilled and Slotted - Silver Line

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction is engineered to provide enhanced braking performance through its drilled and slotted design. This configuration helps reduce brake fade by improving heat dissipation and removing debris from the rotor surface. The zinc silver coating on the hat offers corrosion resistance, extending the rotor's service life. This product line is tailored for drivers seeking reliable stopping power with a focus on durability and consistent performance.

Product Details and Specifications

This disc brake rotor is a solid type with a directional surface featuring both drilled holes and slots. The rotor's nominal thickness is 12 mm, with a discard thickness set at 10 mm to indicate when replacement is necessary. The rotor measures 287 mm in outside diameter and 36 mm in overall height, ensuring compatibility with specified Audi models. The zinc silver hat finish provides rust resistance, maintaining the rotor's integrity over time. The rotor includes 5 bolt holes with a bolt circle diameter of 112.2 mm and a center hole diameter of 68 mm, designed to fit securely on the hub.

Common Applications and Problem Solving

  • Replacement for worn or warped rotors on Audi A4 and A4 Quattro
  • Improves braking response and reduces brake fade during heavy use
  • Addresses rotor surface corrosion with rust-resistant coating
  • Helps eliminate brake noise caused by uneven rotor surfaces
  • Maintains consistent braking performance under varied driving conditions

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 10 mm before installation. Clean the hub surface to remove rust or debris for proper rotor seating. Use the correct torque specifications for the 5 lug bolts to avoid warping. The directional drilled and slotted surface should be installed following the rotation direction indicated on the rotor for optimal performance.

Quality Assurance and Warranty

Dynamite Friction manufactures this rotor to meet OEM standards for fit and function on Audi A4 and A4 Quattro vehicles. The rust-resistant zinc silver finish helps extend the rotor's lifespan. Please refer to Dynamite Friction's warranty policy for coverage details related to manufacturing defects.

BrandDynamite Friction
Part Number631-73037L
PositionDFC Brake Rotor - Drilled and Slotted - Silver, Rear Left
Discard Thickness10
Nominal Thickness12
Disc FinishPlain
Hat FinishZinc silver
Rust Resistant CoatingYes
Bolt Hole Quantity5
Overall Height36
Outside Diameter287
Height36
Surface TypeSlotted x drilled
Solid Or Vented Type RotorSolid
Center Hole Diameter68
Stud/Lug Hole Quantity5
Stud/Lug Hole Diameter15
Directional or Non-Directional Brake SurfaceDirectional
Bolt Circle Diameter112.2
Stud/Lug Hole Circle Diameter112.2

This part fits 24 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
2009AudiA4ConvertibleRear LeftDFC Brake Rotor - Drilled and Slotted - Silver
2009AudiA4 QuattroConvertibleRear LeftDFC Brake Rotor - Drilled and Slotted - Silver
2008AudiA4Rear LeftDFC Brake Rotor - Drilled and Slotted - Silver
2008AudiA4Rear Left320mm Front Disc; DFC Brake Rotor - Drilled and Slotted - Silver
2008AudiA4 QuattroRear LeftDFC Brake Rotor - Drilled and Slotted - Silver
2007AudiA4Rear LeftDFC Brake Rotor - Drilled and Slotted - Silver
2007AudiA4Rear Left320mm Front Disc; DFC Brake Rotor - Drilled and Slotted - Silver
2007AudiA4 QuattroRear LeftDFC Brake Rotor - Drilled and Slotted - Silver
2006AudiA4SedanRear LeftDFC Brake Rotor - Drilled and Slotted - Silver
2006AudiA4ConvertibleRear Left320mm Front Disc; DFC Brake Rotor - Drilled and Slotted - Silver
2006AudiA4SedanRear Left320mm Front Disc; DFC Brake Rotor - Drilled and Slotted - Silver
2006AudiA4 QuattroSedanRear LeftDFC Brake Rotor - Drilled and Slotted - Silver
2006AudiA4 QuattroWagonRear LeftDFC Brake Rotor - Drilled and Slotted - Silver
2005AudiA4SedanRear LeftDFC Brake Rotor - Drilled and Slotted - Silver
2005AudiA4WagonRear LeftDFC Brake Rotor - Drilled and Slotted - Silver
2005AudiA4Convertible1.8LL4Rear Left320mm Front Disc; DFC Brake Rotor - Drilled and Slotted - Silver
2005AudiA4Sedan3.2LV6Rear Left320mm Front Disc; DFC Brake Rotor - Drilled and Slotted - Silver
2005AudiA4Sedan1.8LL4Rear Left320mm Front Disc; DFC Brake Rotor - Drilled and Slotted - Silver
2005AudiA4 QuattroRear Left321mm Front Rotors; DFC Brake Rotor - Drilled and Slotted - Silver
2004AudiA41.8LL4Rear Left320mm Front Disc; DFC Brake Rotor - Drilled and Slotted - Silver
2003AudiA41.8LL4Rear Left320mm Front Disc; DFC Brake Rotor - Drilled and Slotted - Silver
2002AudiA41.8LL4Rear Left320mm Front Disc; DFC Brake Rotor - Drilled and Slotted - Silver
2001AudiA4Rear Left320mm Front Disc; DFC Brake Rotor - Drilled and Slotted - Silver
2000AudiA4Rear Left320mm Front Disc; DFC Brake Rotor - Drilled and Slotted - Silver

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.