Part Number: AR2741
Category: Pressure Washer Parts → Pump Repair Kits → Water Seal Kits
Type: AR 2741 Water Seal Kit – OEM Replacement for XMV Pressure Washer Pumps

The AR 2741 Water Seal Kit (Part #2741) is a genuine OEM replacement repair kit designed for servicing compatible Annovi Reverberi (AR) XMV Series pressure washer pumps. This complete kit includes the essential O-rings, slinger washers, 18 mm plungers, piston washers, and retaining nuts required to restore proper sealing performance and maintain reliable pump operation.

Key Features & Benefits

• Genuine AR (Annovi Reverberi) OEM replacement kit
• Part Number: 2741
• Designed for AR XMV Series pressure washer pumps
• Complete water seal service kit
• Includes OEM O-rings, slinger washers, plungers, piston washers, and retaining nuts
• Restores proper sealing performance
• Helps eliminate water leakage
• Maintains pump pressure and efficiency
• Ideal for pump rebuilds and preventive maintenance
• OEM-quality fit and long service life

Kit Contents

The AR 2741 Water Seal Kit includes:

• (3) 480480 – O-Rings (4.48 × 1.78 mm)
• (3) 1260091 – Slinger Washers
• (3) 1780080 – 18 mm Plungers
• (3) 1260100 – Piston Washers
• (3) 1260110 – Retaining Nuts

All components are genuine OEM AR replacement parts.

Technical Specifications

Part Number: 2741

Product Type: Water Seal Kit

Manufacturer: AR (Annovi Reverberi)

Plunger Size: 18 mm

Compatible Pump Series: XMV

OEM Replacement: Yes

Compatible Pump Models

Designed for use with compatible AR XMV Series pressure washer pumps.

Always verify your pump model before ordering.

Function of the Water Seal Kit

The water seal kit helps:

• Restore proper sealing around the pump plungers
• Prevent water leakage
• Maintain operating pressure
• Protect internal pump components from water bypass
• Improve pump efficiency
• Extend overall pump service life

Replacing worn sealing components helps maintain consistent pump performance while reducing the risk of premature internal wear.

Common Signs Replacement Is Needed

Replace the water seal kit if you notice:

• Water leaking from the pump manifold
• Reduced operating pressure
• Decreased water flow
• Worn or damaged plungers
• Cracked or flattened O-rings
• Damaged piston washers or retaining hardware
• Pump rebuild or scheduled preventive maintenance

Replacing worn components promptly helps prevent additional damage to the pump manifold, plungers, and other internal components.

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 worn sealing components and hardware.
• Clean all sealing surfaces thoroughly.
• Inspect the ceramic plungers and manifold for wear or damage.
• Install the new O-rings, slinger washers, plungers, piston washers, and retaining nuts in the correct order.
• Reassemble the pump and verify proper pressure and leak-free operation.

Important: Inspect additional sealing components, valves, and bearings during service. Replacing worn components together helps maximize pump reliability and service life.

Maintenance Recommendations

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