Doosan · Daewoo · Develon
Wholesale Doosan Engine Parts by Component
OEM-grade and OEM-cross-referenced components for the Doosan (Develon) and Daewoo diesel engine platforms. Sourced for excavators, trucks, coach buses, generator sets, and marine power. Identified by exact OEM number so you order the part that actually fits the first time.
Wholesale & Distribution
Fast Global Sourcing
20+ Years Experience
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Showing 18 · Doosan Engine Parts
Engine Coverage
Overview of Engine Models
The same model differs by build year and emission variant, so we confirm your engine serial before quoting. If your engine is not listed, it is usually still covered — send the nameplate.
| Engine Series | Configuration | Typical Equipment It Powers |
|---|---|---|
| DL06 | 6-cyl in-line | DX140LC / DX160W excavators, mid-size trucks |
| DL08 | 6-cyl turbo | DX300-class excavators, heavy trucks, gensets |
| DE08TIS | 6-cyl common-rail | City buses, commercial trucks |
| DE12TIS | 6-cyl common-rail | Daewoo BS/BH coach buses, heavy plant |
| DV11 / DV15TIS | V-type | Heavy-duty trucks, long-distance coaches |
| P126TI / P158LE | Industrial | Generator sets, marine auxiliary power |
Fitment Accuracy
How We Make Sure the Part Actually Fits
Wrong-part returns are the biggest hidden cost in parts procurement. We remove that risk before a price is quoted, with a four-step match that works even when the number on your old part is worn off.
Read any number
Classic 10-digit, K-prefix machine numbers, current Develon refs, or supplier numbers (Bosch / Doowon) — send whatever is on the part.
Or the nameplate
Numbers gone? The engine model and serial from the data plate, or a clear photo of the casting marks, is enough to identify it.
EPC cross-check
We match your details against the official EPC database — build year and emission variant included — and rule out look-alike variants.
Confirmed in writing
The verified part number, origin (OEM / aftermarket) and warranty appear on your quotation, so there is no ambiguity at the order stage.
Dimensions & Material Grade
The Tolerances and Materials Behind Each Part Group
Critical components are inspected to the OEM's own acceptance tolerances and made from the material class the original specifies. We verify by measurement and supplier documentation — and provide the certificates with the goods on request.
| Component group | Material class (as OEM) | Key inspected dimension | Tolerance basis |
|---|---|---|---|
| Crankshaft | Alloy steel, induction-hardened journals | Journal & pin diameter, run-out | per OEM spec |
| Cylinder block / head | Cast iron / alloy casting | Bore diameter, deck flatness | per OEM spec |
| Piston & rings | Aluminium alloy / cast iron rings | Skirt diameter, ring gap | STD + service oversizes |
| Bearings (main/rod) | Tri-metal / bi-metal | Wall thickness, ID | STD + undersizes |
| Water pump | Cast housing, alloy impeller | Shaft end-play, seal seat | per OEM spec |
| Gasket / seal sets | MLS / elastomer to spec | Bore & bolt-hole match | model-matched |
Reliability & Service Life
The Tests That Stand Behind Long Service Life
Durability is established through engineering design and validation, not merely through verbal promises. We subject tested component assemblies to a four-part evaluation—ranging from durability to balance—to ensure that the parts you install operate reliably under actual engine loads.
Durability Testing
Endurance running that simulates extended service hours, confirming wear surfaces and clearances hold up over the part's expected life.
Fatigue Testing
Cyclic loading on structural parts to verify resistance to crack initiation under the repeated stress an engine actually sees.
Pressure Testing
Hydrostatic / leak testing of fluid-carrying parts to confirm sealing integrity at and above rated operating pressure.
Balance Testing
Dynamic balancing on rotating assemblies to keep vibration low — protecting bearings and extending the life of the whole engine.
Test reports for a specific component can be shared under NDA on request.
Component Categories
Engine Parts by Functional System
We organize inventory the way a workshop searches for it. Pick a functional group and we match the exact variant to your engine's serial and emission spec.
Block & Rotating Assembly
Cylinder blocks, crankshafts, camshafts, flywheels, timing assemblies. Bearings and pistons in standard size, with service over/undersizes for rebuilds.
Air & Boost System
Turbochargers — including water-cooled DV15TIS units — air compressors and breathers, matched to rated boost and oil-feed configuration.
Fuel & Control System
Injection pumps, injectors and ECUs referenced to the correct calibration code and emission variant — always EPC-verified twice.
Cooling & Lube System
Water pumps, oil pumps, oil coolers, thermostats and full overhaul gasket sets. Sealing surfaces and impellers checked at goods-in.
Applications
One Parts Source for Excavators, Buses, Gensets & Marine
The same engine family powers very different machines, each wearing parts differently. We quote the variant proven in your duty cycle.
Excavators & Construction
Durable engine components, hydraulic pumps, and undercarriage parts for Doosan (Develon) excavators and earthmoving equipment operating in harsh conditions.
Commercial Trucks & Buses
Reliable components for TATA and Daewoo commercial vehicles. Covering brake systems, clutches, and engine parts for long-haul and transit reliability.
Marine & Generator Sets
Industrial-grade parts for P-series engines used in continuous power generation and marine propulsion, ensuring zero downtime in critical operations.
Product Advantages
Why Workshops and Fleets Buy From Hengjing
Twenty years on one engine family changes how a supplier works. These are the differences you notice from the first quotation:
Origin Stated, Always
Genuine OEM or cross-referenced aftermarket — every line says which, with the reference number. No part is sold as something it is not.
Material-Certified
Material class verified to OEM spec, with certificates available on request for critical components.
100% Inspected
Critical rotating and sealing parts get full dimensional and visual checks at goods-in. The shelf holds only parts that passed.
Written Warranty
Warranty terms stated on the quotation and invoice, backed by batch inspection records on file.
Repair & Overhaul
Engine Rebuild Kits With Nothing Missing
One kit, one part number to chase — instead of twenty. Kits are assembled per engine model and serial, so the rings, bearings and seals inside are the variants your block actually takes.
Tell us the model, serial, and whether the block stays in the chassis; we configure and quote it as a single line.
Request a Quote →
| Kit contents | In-Frame | Out-of-Frame |
|---|---|---|
| Piston & ring sets | ✓ | ✓ |
| Main & rod bearings, thrust washers | ✓ | ✓ |
| Upper gasket set + head gasket | ✓ | ✓ |
| Lower gasket & seal set | ✓ | ✓ |
| Front & rear crank seals | — | ✓ |
| Complete engine gasket set | — | ✓ |
| Cylinder liner kits (if applicable) | on request | ✓ |
Buyer notes
Frequently Asked Questions
Are these genuine OEM or aftermarket parts?
Both. Genuine OEM and quality cross-referenced aftermarket from audited manufacturers. Each quotation states which, with the reference number.
How do you guarantee the part fits my engine?
A four-step match: read any part number, or use the nameplate; cross-check against the EPC database for build year and emission variant; confirm the verified number in writing on the quotation.
What dimensional tolerance do parts meet?
Critical components are inspected to the OEM's own acceptance tolerances and verified by measurement at goods-in. A dimensional report for a specific line is available on request.
What material grade are the parts made from?
The material class the original specifies for each component group. Material certificates for critical parts are provided with the goods on request.
Are the parts reliability-tested?
For tested groups we require durability, fatigue, pressure, or balance testing as appropriate and review the factory reports before approving a line. Reports can be shared under NDA.
Can you cross-reference old Daewoo part numbers?
Yes — a specialty. Send any format: classic 10-digit, K-prefix, current Develon, or supplier numbers. We translate them to the current part free of charge.
What are your lead times and MOQ?
Stocked items ship within days; factory-sourced assemblies carry a lead time stated on the quotation. Most parts are available individually; MOQs apply mainly to private-label volumes.
Is there a warranty, and can you handle export documents?
Warranty terms are stated in writing on every quotation and invoice. We ship to 30+ countries with commercial invoices, packing lists, certificates of origin and conformity papers.
Ready to source verified-fit Doosan parts?
Send your OEM numbers, a nameplate photo, or a full parts list — a verified-fit quotation comes back within 48 hours, origin and warranty stated in writing.
Request a Quote