Description

John Deere 300D, 250D 2004 Parts Catalog

If you are ordering parts for a John Deere 300D, 250D 2004 Parts Catalog and relying on aftermarket cross-reference lists, you are asking for trouble. I have watched guys swap a hydraulic hose that was three inches off because a third-party book had the wrong length. This 521-page factory document from Deere is what you need on the bench.

Every page is original OEM print. The part numbers were correct at the time of publication (2004) and the grid system sections (01 through 02) let you find exactly what you need without flipping through a generic index. Page 1 shows the left side view of both the 250D and 300D – no guessing which bracket goes where.

LEFT SIDE VIEW AND CUSTOMER INFORMATION

Section 01A of the catalog starts with the left side view of the machine. It calls out each component by number. You get the part number, description, and quantity needed. The manual reminds you that part numbers may change, so verify with your dealer – but the starting point is right here. That is more than you get from any aftermarket compilation.

SERIAL NUMBER PLATE LOCATION

Page 2 covers serial number plate locations. Each dump truck has two plates: one for the product identification number on the left front chassis frame near the cab steps, and one for the engine serial number on the side of the engine. The manual stresses furnishing all characters for warranty claims. Miss one digit and you get the wrong parts – I have seen that happen.

ENGINE SERIAL NUMBER: Decoding the Plate

Page 3 breaks down the engine serial number plate. First line defines manufacturing location, number of cylinders (6), displacement (8.1L), aspiration type (air-to-air turbocharged), and serial number. Second line shows application: ESN 000001–199999 and ESN 200000+ both fit the 250D/300D trucks. That detail saves you from ordering an engine block for the wrong build date. It also tells you the engine is a 6081H series – refer to this Wikipedia article on diesel engines for general theory, but for part numbers, trust this catalog.

Parts Grid Organization (Sections 01 and 02)

The grid system is straightforward. Section 01 covers the main machine groups (A through K for chassis, cab, powertrain). Section 02 covers attachments and options (B through E). Each group has sub-groups like 01A02, 01A03, etc. You do not need to guess – the index at the front lists every grid. For example, if you need brake components, look in group 01F. The exploded drawings show fastener locations and torque specs in foot-pounds where applicable. Need the charge pressure for the hydraulic system? That data is on page 73 – not in this parts catalog, but the service manual John Deere 300D 310D 315D Backhoe Loader Technical Manual covers service procedures. This catalog is for parts identification only.

Why OEM Documentation Beats Aftermarket

Aftermarket parts catalogs reprint old data and often merge different model years. This one is printed by Deere & Company in 2004, copyright 2004. Every page is original, not a scan of a copy. The illustrations are clean, the part numbers are direct from Deere’s system. If you try to use a generic online database, you might order a seal that fits a 1998 model but not your 2004. I have torqued enough bolts to know that the difference of one O-ring can cost you an afternoon of bleeding brakes.

Who Needs This Parts Catalog?

Anyone maintaining a 250D or 300D articulated dump truck from the 2002–2004 production range. If you own a shop that works on these trucks, this catalog belongs on the shelf next to the service manual. It also helps if you are buying a used machine and want to verify what components are original. The 521 pages cover everything from the cab interior to the rear axle group. For compact utility tractors, see the John Deere 4500/4600/4700 Compact Utility Tractors Index. For a 2130, use John Deere 2130 Parts Catalog – Factory Specs for Correct Part Identification.

If you need to understand how the diesel engine operates, this Wikipedia article on diesel engines is a starting point. But for part numbers, you need the factory document.

One more thing: the manual includes a warning that specifications and design are subject to change without notice. That is why you need the correct edition for your serial number range.

FAQ

Does this catalog include torque specifications for assembly?

No. This is a parts catalog, not a service manual. It lists part numbers, quantities, and illustrations. For torque values, use the factory service manual.

Can I use this catalog to look up parts for a 250D with a 2005 build date?

The catalog covers trucks manufactured from 2002 up to the publication date (2004). Later production may have revised part numbers. Check your serial number against the engine application table on page 3. If your ESN is above 200000, the engine parts still match, but other components may have changed. Verify with a dealer for 2005+ builds.

Stop guessing parts numbers. Access the Factory Manual now and get back to wrenching with real data.