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Doosan Pistons & Liners

Genuine & OEM Pistons & Liners Parts

Doosan 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 pistons, rings and cylinder liners for Doosan engines. The range includes the DB58 and D1146 used in earlier machines, the DL06 electronically controlled common rail engine fitted to DX-series excavators and DL-series wheel loaders, and the larger DE12 and DV11 platforms. Doosan engines carry Daewoo design heritage, and part numbers commonly appear in the 65.xxxxx-xxxx format inherited from that lineage. Pistons and liners are supplied as matched sets, and overhaul kits for engines such as the DL06 typically bundle liners, pistons, pins, rings, bearings and valve train components together.

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

Frequently Asked Questions

Which Doosan engines does an overhaul kit cover?

Kits are engine-specific. A DL06 kit suits DX140LC through DX255LC excavators and DL200 to DL250 wheel loaders, but the engine model rather than the machine model determines the kit.

Why do Doosan part numbers start with 65?

The 65.xxxxx-xxxx format is inherited from Daewoo, which developed the engine range before the Doosan name was adopted. Both numbering styles refer to the same components.

Should pistons and liners be replaced together?

Yes. They are supplied as matched sets and the running clearance depends on both. Rings and liner seals are renewed at the same time.