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Bus, Truck & Engine
Parts Supplier Catalog

From internal engine components to heavy-duty chassis and filtration systems — explore Hengjing's complete spare parts range. 25 years of sourcing expertise, full OEM cross-referencing, and global logistics support.

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Product Portfolio

Hengjing Spare Parts —
Core Categories

Hengjing organizes its extensive inventory into focused categories tailored for heavy-duty repair and fleet maintenance requirements.

Our Engine Parts cover 20 critical systems for Doosan/Develon engines. Our Filtration solutions protect vital components, while our Chassis, Transmission, and Excavator categories provide the structural and wear parts necessary to keep off-highway and commercial vehicles in service.

Explore the categories below to find your specific part, or use the comparison matrix to understand our supply focus.

Category Overview

Browse by Product Category

Doosan Engine Parts

Doosan Engine Parts 01

Components for the DL, DV, DE and P diesel engine series used in Doosan and Daewoo (Develon) equipment. Covers cylinder blocks, crankshafts, turbochargers, fuel injection pumps, and critical system groups.

Explore Doosan Engine Parts
Transmission System Parts

Transmission System Parts 02

Gears, clutch packs, synchronizers, output shafts, seals and overhaul kits for the transmissions fitted to Doosan excavators and TATA/Doosan trucks and buses.

Explore Transmission System Parts
Chassis Parts

Chassis Parts 03

Axles, suspension components, steering linkages, mounts and undercarriage hardware for excavators, trucks and buses designed to carry the load and absorb the vibration of off-highway work.

Explore Chassis Parts
Filtration Systems

Filtration Systems 04

Diesel fuel filters, air filters, and oil filters sized to OEM service intervals for Doosan, Daewoo, and TATA diesel engines. Essential maintenance parts, fully cross-referenced to prevent damage.

Explore Filtration Systems
Exterior Accessories

Exterior Accessories 05

Cabin panels, doors, mirrors, lamps, covers, brackets and exterior hardware for trucks, buses and excavators essential for operator safety and cabin weatherproofing.

Explore Exterior Accessories
Excavator Parts

Excavator Parts 06

Hydraulic, electrical, and undercarriage components for Doosan excavators including final drives, travel motors, hydraulic pumps, control valves, sensors, switches and track components.

Explore Excavator Parts
Truck Parts

Truck Parts 07

Spare parts for TATA and Doosan-powered trucks: brake system components, clutch kits, suspension parts, cabin hardware and electrical parts, alongside the engine and transmission ranges.

Explore Transmission Parts

At a Glance

Choose the right accessories for your device.

A quick reference to understand our supply scope across different equipment and component types.

Category Best For Equipment Type Component Focus
Doosan Engine Parts Complete engine rebuilds & repairs Excavators, Generators, Marine Blocks, Crankshafts, Turbos, Pumps
Filters Routine fleet maintenance Doosan & TATA Engines Fuel, Air, Oil, Transmission filters
Excavator Parts Hydraulic & undercarriage repair Doosan (Develon) Excavators Final drives, Motors, Control valves
Truck Parts Commercial fleet consolidation TATA & Doosan Trucks/Buses Brakes, Clutches, Cabin hardware
Transmission & Chassis Drivetrain & structural overhauls Heavy Equipment & Commercial Gears, Axles, Suspension mounts
25+
Years Sourcing Parts
7,000+
SKUs in Inventory
30+
Export Countries
48h
Quotation Response

Not Sure Which Part?

Let Our Experts Match It

Send us the OEM number, the casting/stamping number, or a photo of the old part. Our engineering team will cross-reference it to the exact current part and confirm fit, stock, and price within 48 hours.

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What's the difference between Doosan, Daewoo and Develon parts?

Daewoo's heavy equipment business was rebranded to Doosan and more recently to Develon, but the underlying engines and machines — and the part numbers for older models — are largely shared across the three names. When you search our catalog or send us a part number, we cross-reference across all three brand names so the right component comes back regardless of which badge is on your machine.

Do you sell genuine OEM parts, aftermarket parts, or both?

Both. For current models we can supply genuine OEM-branded parts or parts produced to OEM specifications. For older or discontinued models, we source quality aftermarket alternatives. We'll tell you which option applies to your part and let you choose based on budget and availability.

What is your minimum order quantity (MOQ)?

It depends on the part. Many fast-moving references — filters, gaskets, pumps and common engine components — are available from low quantities, including single units for urgent repairs. For OEM production and custom-branded parts, a minimum applies and varies by item. Share your list and we'll confirm MOQ and price per line.

How long is delivery / lead time?

In-stock parts are prepared for dispatch quickly after payment, usually within a few business days. Made-to-order and OEM-production items need longer depending on quantity and finishing. Every quote includes an estimated lead time so you can plan around your maintenance schedule.