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MWM Pistons & Liners

Genuine & OEM Pistons & Liners Parts

MWM Pistons & Liners Parts

Pistons and cylinder liners form the combustion chamber and transfer gas pressure to the connecting rod and crankshaft, running against each other under conditions no other pair of engine components experiences. This group covers lower peak pressures but higher and more sustained exhaust temperatures — which produces a distinct wear pattern in the ring pack and liner. On engines running biogas or landfill gas, siloxanes in the fuel form abrasive silica deposits on piston crowns, liners and valves, and these deposits are a leading cause of accelerated wear on installations without adequate gas pre-treatment.

AMS Parts supplies a wide range of pistons & liners components for MWM engines used in power generation, marine, and industrial applications. Browse the full range below, or contact us for specific requirements.

Frequently Asked Questions

What are siloxanes and why do they matter?

Siloxanes are silicon compounds present in landfill and sewage gas. In combustion they form hard, abrasive silica deposits on pistons, liners and valves, accelerating wear substantially.

How is siloxane damage prevented?

Through gas pre-treatment before the engine, typically activated carbon or chilling systems. Without treatment, wear rates on landfill and sewage gas installations are markedly higher.

Should pistons and liners be replaced together?

Yes. They are supplied as matched sets and the running clearance depends on both.