Doosan D1146 Engine Cylinder Liner 65.01201-0020

Doosan D1146 Cylinder Liner 65.01201-0020 / 65.01201-0050

The 65.01201-0020 / 65.01201-0050 cylinder liner is supplied for Doosan and Daewoo D1146 / D1146T diesel engine repair. It is used during engine overhaul when the original cylinder bore is worn, scratched, damaged or no longer suitable for stable piston ring sealing performance.

This page is focused on the Doosan D1146 engine liner application for excavator repair. It should not share the old generic cylinder liner table with Komatsu, Cummins, Caterpillar or Mitsubishi engine parts, because those unrelated part numbers weaken the D1146 and 65.01201-0020 product signal.

Part Number and Engine Application

The main part number retained for this page is 65.01201-0020. The number 65.01201-0050 is also used in current D1146 cylinder liner listings, so it is included as a searchable part number for buyer matching. This page does not use a separate Ref Cross field because the replacement relationship should still be confirmed by old sample, engine model and liner dimensions before shipment.

Part Number: 65.01201-0020 / 65.01201-0050

Engine Model: Doosan / Daewoo D1146 / D1146T

Product Type: Engine Cylinder Liner

Supply Quantity: 6 pieces for one 6-cylinder engine set

Use: Diesel engine overhaul and cylinder bore repair

Machine and Engine Fitment Notes

This cylinder liner is used for D1146 engine repair in Doosan and Daewoo excavator applications. The old page already targets DH220, while current aftermarket references also connect D1146 cylinder liners with Solar series applications such as Solar 220LC-III, Solar 250LC-V and Solar 300LC-V. Final fitment should be confirmed by the engine model and the removed liner sample.

Main Application: Doosan / Daewoo D1146 diesel engine

Extended Engine Check: D1146 / D1146T

Machine Reference: DH220 and selected Solar series excavators with D1146 engine

Confirmation Method: Old part number, engine plate, removed liner size and sample photos

Key Checking Points Before Order

Cylinder liners should not be confirmed only by the excavator model. For accurate matching, please check the old part number, engine model, removed liner dimensions and cylinder block condition before shipment.

Engine Check: Confirm whether the engine is D1146 or D1146T.

Part Number Check: Confirm 65.01201-0020 or 65.01201-0050 from the old record or removed sample.

Old Sample Check: Provide clear photos of the removed cylinder liner from multiple angles.

Dimension Check: Confirm inner diameter, outer diameter, total height and flange size.

Repair Check: Check the piston, piston rings and cylinder block condition together before rebuilding the engine.

Cylinder Liner Replacement Notes

When replacing the D1146 cylinder liner, the piston, piston rings, cylinder block condition and engine overhaul requirements should be checked together. If the liner is supplied as a semi-finished type, machining may be required before final installation.

For D1146 / D1146T engine repair, the liner should be selected together with the piston and ring condition. If the old liner has abnormal wear, scoring, overheating marks or poor sealing traces, the related piston and ring set should also be inspected before rebuilding the engine.

Recommended Information for Quotation

Part Number: 65.01201-0020 / 65.01201-0050

Engine Model: Doosan / Daewoo D1146 / D1146T

Machine Model: DH220 or Solar series excavator with D1146 engine

Old Sample: Cylinder liner photos from multiple angles

Dimensions: Inner diameter, outer diameter and total height

Flange Size: Flange diameter and flange thickness if available

Order Details: Required quantity and destination country

FAQ

Is 65.01201-0020 used for Doosan D1146 engine repair?

Yes. This page is for a D1146 engine cylinder liner application using 65.01201-0020 as the retained product signal. Please confirm the old liner dimensions before ordering.

Why is 65.01201-0050 also included on this page?

65.01201-0050 is widely used in current D1146 cylinder liner listings, so it is included as an additional searchable part number. Final matching should still be confirmed by sample photos and liner dimensions.

How many pieces are supplied for one engine set?

The normal supply quantity is 6 pieces for one 6-cylinder engine set.

Do I need to provide the old liner size?

Yes. Please provide the inner diameter, outer diameter, total height, flange size and sample photos. This helps reduce wrong-part risk before shipment.

Can you quote by excavator model only?

Excavator model is useful, but engine model, part number, removed liner photos and liner dimensions are recommended for final confirmation before shipment.