Perfect Stop 6620174 Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Dodge Ram 2500 and 3500

The Perfect Stop Gray Armor-Plate, Premium disc brake rotor (part number 6620174) is engineered to meet the braking demands of Dodge Ram 2500 and Ram 3500 trucks. Designed with precision, this vented rotor offers consistent performance and durability for heavy-duty applications.

• Compatible with Dodge Ram 2500 and Ram 3500 models
• Vented disc brake rotor design for improved heat dissipation
• Overall diameter of 12.732 inches (323.4 mm) for optimal fit
• Nominal thickness of 1.185 inches (30.1 mm) ensuring structural integrity
• Mounting bolt hole quantity: 8 with a 6.496-inch (165 mm) bolt circle diameter
• Smooth surface type for consistent pad contact
• Center hole diameter of 4.843 inches (123 mm) for precise hub alignment
• Discard thickness at 1.118 inches (28.4 mm) indicating service limits

About the Gray Armor-Plate, Premium Product Line

The Gray Armor-Plate, Premium line from Perfect Stop focuses on delivering rotors with enhanced surface protection and durability. This product line features a premium coating designed to resist corrosion and wear, extending the rotor's service life. The 6620174 rotor benefits from this advanced coating, making it suitable for demanding environments encountered by Dodge Ram 2500 and 3500 trucks.

Technical Details and Specifications

This disc brake rotor is vented to facilitate better heat dissipation during braking, reducing the risk of brake fade under heavy loads. The rotor's nominal thickness of 1.185 inches (30.1 mm) ensures it maintains structural strength, while the discard thickness of 1.118 inches (28.4 mm) provides a clear threshold for replacement. The smooth surface type promotes even brake pad wear and consistent stopping power. With eight mounting bolt holes arranged on a 6.496-inch (165 mm) bolt circle diameter, installation aligns precisely with the vehicle hub, supported by a center hole diameter of 4.843 inches (123 mm).

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Dodge Ram 2500 and Ram 3500
• Addresses brake noise and vibration issues caused by uneven rotor surfaces
• Improves braking performance under heavy towing or hauling conditions
• Prevents premature rotor corrosion and surface degradation
• Restores proper rotor thickness to maintain safe braking distances

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify the mounting bolt hole pattern and center hole diameter match the vehicle hub for proper fitment. It is recommended to replace brake pads simultaneously to ensure optimal braking performance. Check rotor thickness against discard specifications (1.118 inches or 28.4 mm) to confirm serviceability. Proper torque specifications should be followed when securing the rotor to avoid warping.

Quality Assurance and Warranty

Perfect Stop disc brake rotors undergo rigorous quality control to meet OEM standards. The Gray Armor-Plate, Premium rotors include a protective coating to resist corrosion and extend service life. Warranty details are provided by the manufacturer and typically cover defects in materials and workmanship under normal use conditions.