7201 Dunbier Hydrastar Filler Cap # 32-7640 | Marine Trailer Part

🔧 Product Description

Dunbier Hydrastar Replacement Reservoir Filler Cap - 32-7640 - Part Number: 7201

A genuine-style service component for all Hydrastar HBA-series electric-over-hydraulic actuators. The supplied component is all-weather plastic filler cap with seal and is used to closes the brake-fluid reservoir and limits contamination.

⚙️ Key Features

• Application: all Hydrastar HBA-series electric-over-hydraulic actuators

• Component: all-weather plastic filler cap with seal

• Designed for electric-over-hydraulic trailer braking

• Direct service replacement when the actuator model matches

• Marine-trailer maintenance component

📏 Specifications

• Type: all-weather plastic filler cap with seal

• System: Hydrastar electric-over-hydraulic braking

• Compatibility must be confirmed from actuator generation and service reference

🔄 Cross Reference & Related Parts

• Dunbier: 7201

• Hydrastar: 32-7640

• Alternate references: Dexter 247634 / HBA-BC

🚤 Trailer Compatibility & Application

• Suitable for all Hydrastar HBA-series electric-over-hydraulic actuators

• Hydraulic and electrical work must match the actuator service manual

• Not interchangeable across actuator generations without part-number confirmation

🔌 Function

Closes the brake-fluid reservoir and limits contamination.

Common signs of wear or failure:

• Fluid or moisture enters around the component

• Seal or thread is damaged

• Hydraulic leakage is visible

• Component will not tighten or seat correctly

• Connector, pin or fitting shows heat or corrosion damage

🛠️ Installation & Safety

• Disconnect trailer power and relieve hydraulic pressure before service

• Use only clean compatible brake fluid and fittings

• Follow Hydrastar bleeding and wiring procedures

• Test normal braking and breakaway operation after repair

• Brake-system repairs should be completed by a competent technician

📦 Condition

• Genuine Dunbier Marine Products part

• Brand new

• Supplied as one hydrastar replacement reservoir filler cap - 32-7640

• Supplied in original or equivalent packaging