This is the OEM piston kit used to rebuild the internals of your Annovi Reverberi pressure washer pump - when it’s time for a proper fix, this is the part you want.

The AR43479 Piston Repair Kit includes genuine 20mm pistons designed for direct replacement in select Annovi Reverberi pressure washer pumps. It’s the same part used at factory level - no off-brand tolerances, no guesswork.

Whether you’re dealing with a loss of pressure, visible wear, or just doing preventative maintenance, this kit gives you everything needed to restore pump performance with AR-spec precision.

Features:

• OEM Annovi Reverberi Repair Kit: AR Part Number AR43479, built to match factory spec.
• 20mm Pistons: Correct size and material for high-output pressure washer models.
• Fixes Loss of Pressure: Ideal for worn, damaged, or degraded piston assemblies.
• Long Term Repair Solution: Restores internal performance without replacing full pump.
• Trusted Part for AR Pumps: Compatible with models using 20mm internals like AR630+.