Wagner Brake Z866 Parking Brake Shoe - Rear

Wagner Z866 Parking Brake Shoe Overview

The Wagner Z866 parking brake shoe is built for rear brake drum applications that demand consistent contact and controlled holding power. It uses OE-matched friction material and precision-ground surfaces to help maximize friction-to-drum contact on select Mercedes-Benz G-Class models and Dodge Sprinter 2500 applications.

For shoppers searching for a rear parking brake shoe for Mercedes-Benz G550, G63 AMG, G65 AMG, G55 AMG, or G500, the Wagner Brake Z866 provides a direct-fit service part with application-specific dimensions and lining specifications.

Key Features

• OE-matched friction material for brake performance aligned with original equipment standards
• Precision-ground construction to improve friction-to-drum contact
• FMSI Number: 1590-S866
• FMSI Lining: 1590
• FMSI Steel: S866
• Brake drum diameter: 6.320 in.
• Brake shoe width: 1.540 in.
• Primary brake shoe friction material thickness: 0.135 in.
• Rear parking brake shoe application

Detailed Description

The Wagner Brake Z866 is a rear parking brake shoe engineered for vehicles that use a 6.320-inch brake drum diameter and a 1.540-inch shoe width. Its OE-matched friction material helps maintain predictable engagement, while the precision-ground surface supports even contact across the drum for stable parking brake operation. This part number is commonly searched as Wagner Z866 and is also referenced by FMSI 1590-S866.

Compatible With Mercedes-Benz G550, rear; Mercedes-Benz G63 AMG, rear; Mercedes-Benz G65 AMG, rear; Mercedes-Benz G55 AMG, rear; Mercedes-Benz G500, rear; and Dodge Sprinter 2500, rear. This part cross-references Bendix Premium Brake Shoes 866 for the same application.

What This Part Helps Address

• Poor parking brake holding performance
• Uneven drum contact from worn or glazed shoe surfaces
• Noisy or inconsistent rear parking brake engagement
• Reduced braking effectiveness caused by worn friction material
• Service replacement needs for rear drum-style parking brake systems

Installation Notes and Tips

Verify drum diameter, shoe width, and FMSI lining match the vehicle before installation. Inspect the brake drum for scoring, taper, or heat damage, since drum condition affects shoe contact and parking brake performance. Confirm rear application fitment for the specific Mercedes-Benz G-Class or Dodge Sprinter 2500 model year before service. Follow the vehicle manufacturer’s brake service procedures and adjust the parking brake system after installation as required.

Quality Assurance

Wagner Brake uses OE-matched friction materials and precision-ground manufacturing methods to support consistent brake shoe performance and reliable drum contact. The Z866 is built to the listed FMSI and dimensional specifications for application-specific fitment.