Doosan DX55 Parts Catalog – 406-Page OEM Parts List

Description

Let me guess — you’ve got a Doosan DX55 mini excavator on the lift (or in the yard) and the wrong part showed up. Or worse, you’re chasing a part number from a third-party source that’s one digit off, and now you’re stuck. I’ve been turning wrenches for 28 years, ASE Master since ’96, and I’ve seen more mismatched parts than I’ve had hot meals. That’s why when I need a part number, I go straight to the source: the Doosan DX55 Parts Catalog. Not a reprint, not a scan from someone’s garage — the original 406-page factory document.

Parts Breakdown for the Doosan DX55

This is a genuine OEM parts catalog, meaning every part number listed comes straight from Doosan’s engineering department. Page 3 shows the complete filter chart with intervals — engine oil filter (471-00123A), fuel filter (K1033222), air cleaner elements (474-00024 outer, 474-00025 inner), suction filter (K1024886), and more. Belts, bulbs, battery (100AH K1025096), fuses, relays — all broken down by part number. The undercarriage section lists idler, upper/lower rollers, sprocket, track shoe assemblies, and rubber shoe options (400mm). No guessing. No cross-referencing aftermarket catalogs. Factory specs.

Get the Right Part Number the First Time

You know the drill: machine down, customer waiting, and the part you ordered doesn’t fit. That stops here. The foreword on page 5 tells you exactly what information you need when ordering: machine model (DX55), machine serial number (found on the bed frame nameplate), engine serial number (4TNV98), part number, description, and quantity. Write it down exactly as shown in the catalog, and you’ll get the right part. I’ve had techs skip the serial number check — don’t be that guy. Doosan DX55 Technical Manual – Factory Equipment List

Filters, Belts, and Under Carriage: Factory Specs Inside

The filter chart alone is worth the access. Engine oil filter change interval: 500 hours. Fuel filter: 500 hours. Outer air cleaner element: 500 hours. Inner: 1000 hours. The belt lengths are listed — fan belt 1125L (2106-1021D21) and air con belt 1150L (DS3202030). Under-carriage part numbers cover idler, rollers, sprocket, track links, and even the rubber shoe assembly. If you need to rebuild the undercarriage, you have the exact numbers to hand your parts guy. No guessing if a generic roller fits. Doosan S340LC-V Parts Catalog | 612-Page OEM Parts Manual

Why Does a 406-Page Parts Catalog Matter?

Because one wrong digit costs you time and money. Third-party parts lists — even good ones — miss updates. This catalog is the original factory document. 406 pages, not 400. It includes the full seal kit list (boom, arm, bucket, swing, center joint, dozer, swing motor, travel motor, track spring) and the engine gasket set (K9006178). That’s coverage for the entire machine, from the hydraulic system to the final drives. If you work on these machines regularly, you need this. Doosan S225LC-V 2009 Parts Catalog – 692 Pages of Factory Specs

Engine Gasket Kit and Seal Kit: Critical Part Numbers

The seal kit list on page 3 — and continued in the full catalog — gives you every part number you need for a complete hydraulic cylinder reseal. Boom seal kit: K9005862. Arm: K9005879. Bucket: K9005880. Boom swing: 2440-9252KT. Center joint: K9005861. Dozer: 2440-9201KT. Swing motor: K9005726. Travel motor: 2.180-01161. Track spring: 2274-1029KT. The engine gasket set part number K9006178 covers the 4TNV98 mill. Order the right kit once. Automotive Industry Overview

Can I use this catalog to find repair steps?

No. This is a parts catalog. Repair procedures are in the service manual.

How do I ensure I order the correct part using this manual?

Start by reading the foreword on page 5. You need the machine model (DX55), machine serial number (on the bed frame nameplate), engine serial number (on the cylinder block), the part number from the catalog, and the description. Cross-check the illustration key number — that reference number ties to the exploded view. Don’t assume the part number is the same across model years. The catalog is specific to the DX55, but serial number breaks exist. If your machine serial number starts with HEAIO, you’re covered. Always verify the interval hours if ordering maintenance parts — the filter chart on page 3 lists hours but the part numbers are the same regardless of interval. Write down the part number exactly as shown, including dashes and letters. One wrong character and you’ll get the wrong part. Automotive Industry Overview

I don’t hand a customer a parts list unless I know it’s right. This catalog is right. 406 pages of factory part numbers, exploded views, and ordering instructions. Skip the guesswork. Access the Factory Manual and get back to wrenching.