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The genuine Interpump / General Pump Ceramic Piston (SKU 47040409) is a precision-engineered replacement plunger, measuring 20 mm in diameter and crafted from premium alumina ceramic. Designed to match OEM specifications for Interpump and General Pump high-pressure piston pumps, this component delivers exceptional wear resistance, thermal stability, and corrosion protection, ideal for heavy-duty commercial use. It safeguards pump performance and longevity by preventing cracked or worn pistons from allowing water into the crankcase, which can degrade lubrication and cause serious internal damage. In some cases, a failing piston may even be identified by a minor leak between the pump body and manifold

Interpump Pistons

Interpump Ceramic Piston | Type B

Interpump Ceramic Piston | Length 37.5 MM | Diameter 18 MM

Interpump Ceramic Piston | Length 37.5 MM | Diameter 15 MM

Interpump Ceramic Piston | Length 38 MM | Diameter 15 MM

Interpump | Ceramic Piston