Dolly Kit for AR 2757 Ceramic Pistons Set of 3 – OEM Replacement Part
Part Number: 7420
Category: Pressure Washer Parts → Pump Parts → Ceramic Pistons & Plungers
Type: AR (Annovi Reverberi) KIT 2757 Ceramic Piston Set
The Dolly Kit for AR 2757 Ceramic Pistons Set of 3 (Part #7420) is a genuine OEM replacement ceramic piston kit designed to restore performance and reliability in compatible Annovi Reverberi (AR) triplex plunger pumps. This kit includes three precision ceramic pistons measuring 18mm x 40mm, providing a complete replacement solution for servicing worn, damaged, or deteriorated plunger assemblies.
Key Features & Benefits
- Genuine AR (Annovi Reverberi) OEM replacement kit
- Includes three ceramic pistons
- Precision-manufactured ceramic construction
- Piston dimensions: 18mm x 40mm
- Excellent wear and abrasion resistance
- Helps restore pump performance
- Maintains consistent operating pressure
- Reduces premature seal wear
- OEM-quality fit and performance
- Ideal for pump rebuilds and maintenance
- Long service life and dependable operation
- Direct replacement design
Technical Specifications
Part Number: 7420
Manufacturer: AR (Annovi Reverberi)
Manufacturer Model Number: KIT 2757
Product Description: Kit Dolly A2757 Ceramic Piston Ø18 x 40 (3 pc)
Product Type: Ceramic Piston / Plunger Kit
Piston Diameter: 18mm
Piston Length: 40mm
Quantity: 3 Pistons
Material: Ceramic
Pump Compatibility: Compatible AR Triplex Plunger Pumps
OEM Replacement: Yes
Application: Pump Rebuild and Maintenance
Common Applications
- AR pressure washer pumps
- Triplex plunger pumps
- Commercial pressure washing equipment
- Industrial cleaning systems
- Agricultural spraying equipment
- Fleet washing systems
- Water transfer equipment
- Pump rebuild and repair services
Performance Benefits
- Restores proper pump operation
- Maintains consistent pressure output
- Reduces seal wear and leakage
- Improves pump efficiency
- Provides superior wear resistance
- Supports reliable long-term operation
- Helps extend pump service life
- Maintains consistent cleaning performance
Signs Ceramic Pistons May Need Replacement
Replace ceramic pistons if you notice:
- Cracked or chipped pistons
- Excessive seal wear
- Reduced operating pressure
- Water leakage around seals
- Visible scoring or surface damage
- Pump performance loss
- Increased maintenance requirements
- Damage discovered during pump servicing
Installation Notes
- Shut down equipment and relieve all system pressure.
- Disconnect power and water supply.
- Remove the pump manifold according to manufacturer procedures.
- Inspect existing pistons and seals for wear or damage.
- Remove worn ceramic pistons carefully.
- Install replacement pistons according to OEM specifications.
- Inspect and replace seals if necessary.
- Reassemble the pump and test operation.
Important: Always verify compatibility with your specific AR pump model and inspect seals and packing assemblies during piston replacement.
Maintenance Recommendations
- Inspect pistons during routine pump maintenance.
- Replace damaged pistons promptly.
- Maintain clean inlet water filtration.
- Inspect seals whenever pistons are serviced.
- Follow manufacturer-recommended maintenance intervals.
- Monitor pump performance regularly for early signs of wear.
