Part Number: 2874
Category: Pressure Washer Parts → Pump Repair Kits → Packing Kits
Type: AR 2874 Packing Kit – 18mm for SXW Pressure Washer Pumps

The AR 2874 Packing Kit (Part #2874) is a genuine OEM replacement repair kit designed for servicing compatible Annovi Reverberi (AR) SXW18 Series pressure washer pumps. Engineered with 18 mm packing components, this OEM kit restores proper sealing around the pump plungers, helping maintain operating pressure, eliminate water leakage, and extend the service life of your pressure washer pump.

Key Features & Benefits

• Genuine AR (Annovi Reverberi) OEM packing kit
• Part Number: 2874
• Designed for SXW18 pressure washer pumps
• 18 mm packing replacement kit
• Restores proper sealing performance
• Helps eliminate water leakage
• Maintains operating pressure and pump efficiency
• Extends pump service life
• Ideal for pump rebuilds and preventive maintenance
• OEM-quality fit and performance

Technical Specifications

Part Number: 2874

Product Type: Packing Kit

Manufacturer: AR (Annovi Reverberi)

Packing Size: 18 mm

Compatible Pump Series: SXW

OEM Replacement: Yes

Compatible Pump Models

Designed for use with compatible AR pumps, including:

• SXW18

Always verify your pump model and packing size before ordering.

Function of the Packing Kit

The packing kit helps:

• Seal around the pump plungers
• Maintain proper operating pressure
• Prevent internal water bypass
• Reduce external water leakage
• Improve pump efficiency
• Extend pump service life

Replacing worn packings helps restore pressure washer performance while protecting other internal pump components from excessive wear.

Common Signs Replacement Is Needed

Replace the packing kit if you notice:

• Water leaking from the pump manifold
• Reduced operating pressure
• Decreased water flow
• Worn or damaged packings
• Pump rebuild or scheduled preventive maintenance
• Loss of cleaning performance

Replacing worn packings promptly helps prevent additional damage to ceramic plungers, manifolds, and other internal pump 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.
• Carefully remove the worn packings.
• Clean all sealing surfaces thoroughly.
• Inspect ceramic plungers, water seals, and the manifold for wear or damage.
• Install the new OEM packings in the correct orientation.
• Reassemble the pump and verify proper pressure and leak-free operation.

Important: Inspect water seals, O-rings, ceramic plungers, and check valves during service. Replacing related wear components at the same time helps maximize pump reliability and service life.

Maintenance Recommendations

• Inspect packings during routine pump maintenance.
• Replace worn packings at the first signs of leakage or pressure loss.
• Use clean, filtered inlet water to minimize seal wear.
• 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.