Centric 122.65037 Brake Drum - Rear

Centric Premium Brake Drum for Rear Applications

Centric Premium Brake Drum 122.65037 is built to OE specifications for proper fitment and consistent braking performance. It is a rear brake drum for Ford Ranger and Mazda truck applications, including Mazda B2300, B2500, B3000, B4000, Explorer, and Navajo fitments listed below.

Key Features

• OE-style brake drum construction for accurate fit and function
• Electrocoating or OE-style painted finish for corrosion protection
• Nominal drum diameter: 10.000 in. / 254.00 mm
• Maximum brake diameter discard: 10.090 in. / 256.29-256.300 mm
• Outside diameter: 11.730 in. / 297.942-298.0 mm
• Friction surface width: 2.850 in. / 72.390-72.4 mm
• Height: 3.460 in. / 87.884 mm
• Hub hole/register: 3.440 in. / 87.376 mm
• 5-bolt pattern with 4.500 in. bolt circle diameter
• Floating mounting type with no outer cooling fins

Detailed Description

Centric Premium Brake Drums are manufactured using original equipment specifications and production processes to help maintain correct drum geometry, fitment, and braking consistency. Part number 122.65037 is a rear brake drum with a 10-inch nominal diameter, 5 mounting holes, and a 4.500-inch bolt circle, making it a direct-match service part for select Ford Ranger and Mazda rear drum brake setups. The premium finish helps protect the drum from environmental exposure while supporting long-term service life. This part cross-references National 1126 and Anchor 8989 for the same application.

Compatible With rear drum brake service on 1998-2009 Ford Ranger, 2003-2010 Mazda B4000, 2003-2009 Mazda B2300, 2003-2008 Mazda B3000, 1998-2001 Mazda B2500, 1991-1994 Ford Explorer, and 1991-1994 Mazda Navajo applications. If you are replacing worn rear drums on a Ford Ranger or Mazda B-series truck, Centric Premium Brake Drums 122.65037 provide the OE-style dimensions needed for a proper service replacement.

What It Helps Address

• Rear brake pulsation caused by worn or out-of-round drums
• Reduced braking consistency from excessive drum wear
• Corrosion on exposed brake drum surfaces
• Fitment issues from non-OE dimensioned replacement drums
• Service replacement needs on Ford Ranger and Mazda rear drum brake systems

Installation Notes and Tips

Verify the rear brake drum diameter, bolt pattern, and hub register before installation. Measure the existing drum against the 10.090-inch discard limit and inspect brake shoes, wheel cylinders, and hardware for wear before reassembly. Confirm the vehicle’s rear brake configuration matches the listed fitment notes, especially on Mazda B2300, B3000, and B4000 models with different front disc brake sizes.

Quality Assurance

Centric Premium Brake Drums are produced to original equipment specifications and manufacturing processes for consistent fit and performance. The electrocoated or OE-style painted finish adds protection against the elements for everyday service use.