ACDelco Professional DuraStop Brake Wheel Cylinders use both aluminum and iron castings making them the ideal high quality aftermarket replacement for many vehicles on the road today. The ACDelco DuraStop wheel cylinders contain both Ethylene Propylene (EPDM) and Styrene Butadiene (SBR) rubber components to provide superior resistance to heat, corrosion, and leakage. Formulated with a smooth bore finish, these cylinders have a quality seal to help increase the life of rubber components. ACDelco Professional Drum Brake Wheel Cylinders are ready to bench bleed and install right out of the box - no assembly required. These premium aftermarket replacement Drum Brake Wheel Cylinders are manufactured to meet or exceed your expectations for fit, form, and function.

Product Features:

• Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
• Pressure tested to ensure safe and confident braking
• Trivalent coated bleeder screws provide extra protection and added durability
• Cast iron and aluminum specifications; no extra stress on the brake boosting mounting