Dynamic Friction 631-54013L Disc Brake Rotor - Front Left

Overview

Dynamic Friction 631-54013L is a vented disc brake rotor with a slotted and drilled surface, built for drivers restoring or servicing classic Ford and Mercury applications. It fits front left positions and uses a zinc silver hat finish with rust-resistant coating for added surface protection.

This rotor is a fitment-based replacement for select Ford LTD II, Ranchero, Thunderbird, Elite, Gran Torino, Torino, and Mercury Cougar and Montego applications. The 631-54013L part number is useful when matching the correct rotor for the listed vehicles.

Key Features

• Slotted and drilled brake surface for consistent pad contact and heat management.
• Vented rotor construction for improved airflow through the braking surface.
• Zinc silver hat finish with rust-resistant coating.
• Five-lug pattern with 114.3 mm bolt circle diameter.
• Directional brake surface for the specified application.

Detailed Description

The Dynamic Friction 631-54013L disc brake rotor is engineered for front left fitment on select 1974-1979 Ford and Mercury vehicles. Its 272 mm outside diameter, 70.5 mm center hole diameter, and 5-lug, 114.3 mm bolt circle dimensions support accurate replacement matching for classic brake service. The 631-54013L rotor is a practical choice when replacing a worn rotor on a Ford Torino, Mercury Cougar, or similar listed application.

Brand Line: DFC Brake Rotor - Drilled and Slotted - Silver identifies a rotor line focused on a drilled-and-slotted braking surface with a silver-finished hat. That combination is aimed at buyers who want a replacement rotor with a more corrosion-resistant appearance and a performance-oriented surface design while staying within the listed OE-style fitment.

Common Uses

• Correcting brake pulsation caused by rotor wear or uneven surface condition.
• Replacing a rotor with scoring, rust, or heat-related surface damage.
• Restoring braking performance on classic Ford and Mercury front left applications.
• Addressing noise or reduced pad contact from an out-of-spec rotor surface.

Installation Notes

Verify the listed fitment before installation, including the front left position and any application notes such as exclusions for Police, Taxi, Heavy Duty, or wagon configurations. Confirm rotor dimensions, bolt pattern, and center bore against the removed part before service. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

Dynamic Friction supplies this rotor with a rust-resistant coating and zinc silver hat finish to support surface protection during service and storage. The part number 631-54013L should be matched to the vehicle listing and brake configuration before installation.