Part Number: 0202.0153.00
Category: Pressure Washer Parts → Pump Components → Ceramic Pistons
Type: Comet 0202.0153.00 15mm Ceramic Piston – OEM Replacement for ZW & LW Pressure Washer Pumps

The Comet 0202.0153.00 Ceramic Piston (Comet Part #202.0020.00) is a genuine OEM replacement 15 mm ceramic plunger designed for servicing compatible Comet ZW and LW Series pressure washer pumps. Engineered to Comet's original equipment specifications, this high-strength ceramic piston restores proper pump operation, maintains operating pressure, and helps maximize the service life of your pressure washer pump.

Key Features & Benefits

• Genuine Comet OEM ceramic piston
• Part Number: 0202.0153.00
• Comet Part Number: 202.0020.00
• Precision 15 mm ceramic plunger
• Designed for Comet ZW and LW Series pumps
• Restores pump pressure and efficiency
• Highly wear-resistant ceramic construction
• Helps reduce seal and packing wear
• Ideal for pump rebuilds and preventive maintenance
• OEM-quality fit and long service life
• Sold individually

Technical Specifications

Part Number: 0202.0153.00

Comet Part Number: 202.0020.00

Product Type: Ceramic Piston

Manufacturer: Comet Pumps

Piston Diameter: 15 mm

Material: Precision Ceramic

Compatible Pump Series: ZW & LW

OEM Replacement: Yes

Compatible Pump Models

Designed for use with compatible Comet pressure washer pumps, including:

• ZW Series
• ZWD Series
• ZWD-K Series
• LW Series
• LWD Series
• LWK Series
• LWS Series
• LWS-K Series

Always verify your pump model and piston diameter before ordering.

Function of the Ceramic Piston

The ceramic piston helps:

• Generate high-pressure water output
• Maintain proper operating pressure
• Provide smooth reciprocating pump operation
• Reduce wear on seals and packings
• Improve overall pump efficiency
• Extend pressure washer pump service life

Replacing worn ceramic pistons helps restore pressure washer performance while protecting other internal pump components from unnecessary wear.

Common Signs Replacement Is Needed

Replace the ceramic piston if you notice:

• Reduced operating pressure
• Water leakage around the plungers
• Chipped or cracked ceramic surfaces
• Scored or worn piston surfaces
• Pump rebuild or scheduled preventive maintenance
• Reduced cleaning performance

Replacing damaged pistons promptly helps prevent premature wear to packings, water seals, 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.
• Carefully remove the existing ceramic piston.
• Inspect the piston rod, packings, water seals, and manifold for wear or damage.
• Clean all sealing surfaces thoroughly.
• Install the new OEM ceramic piston according to the manufacturer's specifications.
• Reassemble the pump and verify proper pressure and leak-free operation.

Important: Inspect water seals, packings, O-rings, and check valves during service. Replacing related wear components at the same time helps maximize pump reliability and long-term performance.

Maintenance Recommendations

• Inspect ceramic pistons during routine pump maintenance.
• Replace damaged or worn pistons immediately.
• Maintain clean, filtered inlet water to minimize abrasive wear.
• Never operate the pump without an adequate water supply.
• Use only genuine OEM Comet replacement parts to maintain optimum pump performance, reliability, and long service life.