Part Number: AR2543
Category: Pressure Washer Parts → Pump Repair Kits → Ceramic Piston Kits
Type: AR 2543 Ceramic Piston Kit – 22mm for XW & XWA Pressure Washer Pumps

The AR 2543 Ceramic Piston Kit (Part #2543) is a genuine OEM replacement repair kit designed for servicing compatible Annovi Reverberi (AR) XW and XWA Series triplex pressure washer pumps. This complete rebuild kit includes the essential pistons, O-rings, slingers, washers, and retaining nuts required to restore proper pump operation and maintain dependable high-pressure performance.

Key Features & Benefits

• Genuine AR North America OEM ceramic piston kit
• Part Number: 2543
• Designed for XW and XWA Series triplex pumps
• Complete piston rebuild kit
• Includes pistons, O-rings, slingers, washers, and retaining nuts
• Restores pump efficiency and operating pressure
• Helps reduce leakage and internal wear
• Ideal for pump rebuilds and preventive maintenance
• OEM-quality fit and performance
• Designed for commercial and industrial pressure washer pumps

Kit Contents

The AR 2543 Ceramic Piston Kit includes:

• (3) Pistons
• (3) O-Rings
• (3) Slingers
• (3) Washers
• (3) Retaining Nuts

All components are genuine OEM AR North America replacement parts.

Technical Specifications

Part Number: 2543

Product Type: Ceramic Piston Kit

Manufacturer: AR North America

Piston Size: 22 mm

Compatible Pump Series: XW & XWA

OEM Replacement: Yes

Compatible Pump Models

Designed for use with compatible AR North America pumps, including:

• XW Series Pumps
• XWA Series Pumps

Always consult your pump manual to verify compatibility before ordering.

Function of the Ceramic Piston Kit

The ceramic piston kit helps:

• Restore proper piston operation
• Maintain operating pressure
• Reduce internal leakage
• Protect pump seals and packing
• Improve pump efficiency
• Extend pump service life

Replacing worn piston assemblies helps restore pressure washer performance while minimizing wear on additional pump components.

Common Signs Replacement Is Needed

Replace the piston kit if you notice:

• Reduced operating pressure
• Water leakage around the piston area
• Worn or damaged ceramic pistons
• Cracked or deteriorated O-rings
• Excessive internal pump wear
• Pump rebuild or scheduled preventive maintenance

Replacing worn pistons promptly helps prevent additional damage to seals, packings, and the pump manifold.

Installation & Service Notes

• Shut down the pressure washer and relieve all system pressure.
• Remove the pump manifold according to the manufacturer's service procedures.
• Remove the existing pistons and related hardware.
• Inspect the plungers, manifold, and sealing surfaces for wear or damage.
• Install the new pistons, O-rings, slingers, washers, and retaining nuts in the correct order.
• Torque retaining hardware according to the manufacturer's specifications.
• Reassemble the pump and verify proper operation and leak-free performance.

Important: The information provided lists 22 mm in the product title, while the kit contents reference 15 mm pistons. Verify the correct piston size before installation to ensure compatibility with your specific pump model.

Maintenance Recommendations

• Inspect pistons and sealing components during routine maintenance.
• Replace worn pistons at the first signs of wear or damage.
• Maintain clean inlet water using an appropriate filtration system.
• Never operate the pump without an adequate water supply.
• Use only genuine OEM AR North America replacement parts to maintain optimum pump performance, reliability, and long service life.