Centric 122.66029 Brake Drum - Rear

Overview of Centric Premium Brake Drum 122.66029

The Centric Premium Brake Drum 122.66029 is engineered for reliable braking performance on heavy-duty vehicles. Designed specifically for Chevrolet and GMC models such as the C3500, Express 3500, G30, K3500, P30, P3500, and Savana 3500, this brake drum meets precise specifications to ensure proper fit and function.

• Compatible with Chevrolet and GMC heavy-duty trucks and vans
• Nominal drum diameter of 13.000 inches (330.20 mm)
• Outside diameter approximately 16.200 inches (411.5 mm)
• Equipped with 8 bolt holes and a 6.5-inch (165.1 mm) bolt circle diameter
• Features outer cooling fins for improved heat dissipation
• Floating mounting type with mounting hole diameter around 0.61 inches (15.75 mm)
• Friction surface width of 4.02 inches (102 mm) for consistent braking contact
• Weight approximately 55 lbs (25 kg) for durability and strength

Detailed Product Description

The Centric Premium Brake Drums line is designed to provide dependable braking components for commercial and heavy-duty vehicles. This brake drum, part number 122.66029, is manufactured to meet or exceed OEM specifications, ensuring a precise fit for Chevrolet and GMC models including the C3500, Express 3500, G30, K3500, P30, P3500, and Savana 3500. The drum’s nominal diameter of 13 inches (330.20 mm) and outside diameter of 16.2 inches (411.5 mm) align with factory dimensions, while the 8-bolt hole configuration and 6.5-inch (165.1 mm) bolt circle diameter provide secure mounting. Outer cooling fins are incorporated to enhance heat dissipation during braking, reducing the risk of brake fade under heavy loads. The floating mounting type allows for slight movement to accommodate thermal expansion and improve brake system longevity.

Applications and Problem Solving

• Replacement for worn or scored brake drums on Chevrolet and GMC heavy-duty trucks and vans
• Addresses brake noise and vibration caused by uneven drum surfaces
• Restores proper brake drum diameter to maintain braking efficiency
• Improves heat dissipation to reduce brake fade during extended use
• Ensures secure mounting with correct bolt hole and circle diameter specifications

Installation Notes and Tips

• Verify compatibility with vehicle make and model before installation
• Inspect brake shoes and hardware for wear and replace as necessary
• Clean mounting surfaces to ensure proper fit and prevent misalignment
• Torque mounting bolts to manufacturer specifications to avoid warping
• Check drum diameter against maximum discard limits (13.090 inches / 332.5 mm) before installation

Quality Assurance and Warranty

Centric Premium Brake Drums are manufactured to meet stringent quality standards, ensuring durability and consistent performance. Each brake drum undergoes rigorous testing to comply with OEM specifications. While specific warranty details for part number 122.66029 should be confirmed with the supplier, Centric typically offers coverage against defects in materials and workmanship.