Kit 2572 Bolts & O-Rings for MiniMatic 4/B Unloader – OEM Replacement Part
Part Number: 6611
Category: Pressure Washer Parts → Unloader Valve Accessories → Mounting Kits
Type: AR Pumps Kit 2572 Bolts & O-Rings for MiniMatic 4/B Unloader
Manufactured by AR North America, Kit 2572 provides OEM-quality components engineered to match original specifications for fit, performance, and durability. Whether replacing worn hardware, repairing leaks, or rebuilding a MiniMatic unloader assembly, this mounting kit helps ensure reliable operation and proper sealing between the pump and unloader valve.
Key Features & Benefits
- Genuine AR North America OEM replacement kit
- Designed for MiniMatic unloader installations
- Includes mounting hardware and sealing O-rings
- Helps maintain leak-free pump-to-unloader connections
- Ideal for repairs, rebuilds, and maintenance
- OEM-quality fit and compatibility
- Durable components for long service life
- Supports proper pressure washer system performance
- Convenient all-in-one mounting kit
Technical Specifications
Part Number: 6611
Manufacturer: AR North America
Kit Number: 2572
Product Type: Mounting Bolt & O-Ring Kit
Compatibility: AR MiniMatic Unloaders
OEM Replacement: Yes
Kit Contents
The Kit 2572 includes:
| Quantity | Component | Part Number |
|---|---|---|
| 1 | Brass Adjusting Bolt | 1540270 |
| 1 | O-Ring | 390080 |
| 1 | O-Ring | 1140450 |
| 1 | O-Ring | 1540630 |
| 1 | O-Ring | 880270 |
| 1 | Mounting Bolt | 1540260 |
Compatible Applications
Designed for use with:
- AR MiniMatic 4/B Unloaders
- Compatible AR pressure washer pumps
- Pressure washer unloader service repairs
- Pump-to-unloader mounting applications
- Commercial pressure washer maintenance
- Industrial cleaning equipment repairs
Common Reasons for Replacement
Replace mounting hardware and seals if you notice:
- Water leakage around the unloader
- Damaged or worn O-rings
- Corroded mounting hardware
- Loose unloader mounting
- Pressure loss at mounting connections
- Unloader removal during service or rebuild
Replacing these components during maintenance can help prevent future leaks and ensure proper system performance.
Performance Benefits
- Restores proper sealing between pump and unloader
- Helps prevent water leaks
- Maintains system pressure integrity
- Supports reliable unloader operation
- Reduces downtime during repairs
- OEM-quality replacement components
- Simplifies maintenance and installation
Installation Notes
- Shut down and depressurize the pressure washer system.
- Remove the existing MiniMatic unloader if necessary.
- Inspect mounting surfaces for damage or debris.
- Replace all O-rings included in the kit.
- Install mounting hardware according to manufacturer specifications.
- Verify proper alignment and sealing.
- Test the system for leaks before returning to service.
Important: Always replace damaged O-rings and inspect mating surfaces during installation to ensure a proper seal.
Maintenance Recommendations
- Inspect mounting seals during routine service.
- Replace O-rings whenever the unloader is removed.
- Check mounting hardware for corrosion or wear.
- Monitor for leaks around the unloader connection.
- Use only OEM replacement parts for best performance.
- Keep a spare kit available for routine maintenance.
