EZ Loader Copper Banjo Bolt Washer (Hydraulic Brake Seal) | 290-032784

OEM EZ Loader copper banjo bolt washer designed for hydraulic brake systems—creates a leak-proof seal at brake line connections.

This is a crush washer, not a standard washer. It is designed to compress under torque and form a tight seal between the banjo bolt and mating surfaces.

• Designed for hydraulic brake line connections
• Creates a leak-proof seal under pressure
• Compresses to fill surface imperfections
• Used on EZ Loader marine trailer brake systems

👉 Not sure if this fits your brake system? Call us—we’ll help you match it correctly.

Part Name: Copper Banjo Bolt Washer
Part Number: 290-032784

What This Washer Does

This washer is used in hydraulic brake systems at banjo bolt connections, typically where brake lines attach to calipers or brake components.

When tightened, the copper washer compresses slightly to:

• create a fluid-tight seal
• fill microscopic surface imperfections
• prevent brake fluid leaks under pressure

Why Copper Is Used

This washer is made from copper, which is specifically chosen for sealing applications.

• soft and malleable (compresses under torque)
• forms a tight seal between metal surfaces
• handles pressure cycling in brake systems
• more reliable sealing than harder materials

Why Not Steel or Zinc Washers

• too hard to compress
• will not seal properly
• can result in fluid leaks

Compared to Aluminum Washers

• copper provides more consistent sealing
• better deformation under torque
• more forgiving on imperfect surfaces

Designed for Marine Brake Systems

Used on EZ Loader trailers equipped with hydraulic brake systems where reliable sealing is critical.

👉 This is a sealing component—not general hardware.

Important Fitment Clarification

• used only with banjo bolt connections
• must match bolt and fitting size
• not interchangeable with standard flat washers

Why This Part Matters

👉 This washer is critical to brake system integrity.

Without a proper seal:

• brake fluid can leak
• system pressure is lost
• braking performance is compromised

Using the correct copper crush washer ensures safe and reliable brake operation.

Real-World Insight

At 411-Trailers Group in Hardeeville, South Carolina, we work with trailer brake systems and components regularly. One of the most common issues we see is fluid leaks caused by reused or incorrect washers.

Replacing crush washers during service is a simple step that prevents larger brake system problems.

Final Note

👉 This is not just a washer—it is a critical sealing component in your brake system.

Always replace with the correct type and size to maintain proper sealing and safe operation.