Description

Fiat-hitachi EX120-S, EX120-55S, EX120-SHC, EX120-ELV, EX120-SX Parts Catalog

If you’ve ever ordered a hydraulic hose for a Fiat-hitachi excavator and ended up with the wrong thread pitch because some aftermarket catalog had a misprint, you understand the frustration. That’s why you need the Fiat-hitachi EX120-S, EX120-55S, EX120-SHC, EX120-ELV, EX120-SX Parts Catalog — 852 pages of official OEM part numbers and exploded diagrams. No guesswork. No third-party errors.

Page 1 lists the exact covered models: EX120-S, EX120-55S, EX120-SHC, EX120-ELV, EX120-SX, plus other variants. The foreword on page 5 details the model code notation used throughout the catalog. Every section is broken out by upperstructure, undercarriage, and attachments. You will find the ENGINE and FUEL systems properly documented with factory diagrams.

Fiat-hitachi EX120-S, EX120-55S, EX120-SHC, EX120-ELV, EX120-SX Parts Catalog: What You Get

Look through the table of contents. You will see sections like FRAME, CENTER JOINT PARTS, COUNTERWEIGHT, ENGINE, ENGINE SUPPORT, RADIATOR, RADIATOR SUPPORT, RESERVE TANK, AIR CLEANER, AIR CLEANER SUPPORT, PRE CLEANER, MUFFLER, FUEL TANK, FUEL TANK SUPPORT, FUEL PIPING, FUEL FEED PUMP, FUEL DOUBLE FILTER, and then the pump device variants. That’s just the upperstructure. For each of these, the catalog provides an exploded diagram with part numbers and quantities. If you need a specific O-ring for the fuel feed pump, you will find it listed with the exact part number. The index in the back allows you to search by part number directly. This level of detail is what separates an OEM catalog from a generic one.

Engine and Fuel System Parts Breakdown

Engine part numbers are listed under the ENGINE and ENGINE SUPPORT sections. The fuel system gets its own set of sections: FUEL TANK, FUEL PIPING, FUEL FEED PUMP, FUEL DOUBLE FILTER. Need a fuel line for an EX120-S? The diagram in FUEL PIPING shows the exact routing and part number. The catalog also covers the radiator and air cleaner assemblies.

Are Aftermarket Catalogs Reliable?

Short answer: no. I’ve seen aftermarket manuals list a part number that was discontinued five years ago, or show a diagram for a different pump variant. This is the original Hitachi parts catalog printed for the Japanese market. The part numbers are factory-verified. Use the index in the back (organized by part number) to cross-check. The catalog even marks new parts with an asterisk.

3 Reasons to Use OEM Part Numbers

First, fitment. The solenoid valves differ between the EX120-S and EX120-55S—see the SOLENOID VALVE sections. Second, durability. OEM seals and O-rings meet the original hardness spec. Third, warranty. Using non-OEM parts can void coverage on the swing device or control valve.

Pilot Piping and Solenoid Valve Sections

The catalog has no fewer than eleven PILOT PIPING sections, each specific to model variants. For example, PILOT PIPING (1) has separate diagrams for <120,SS,HG,LV,X,H,K> and and . If you skip the variant code, you’ll get the wrong hose assembly. The SHOCKLESS VALVE section is also split by model. Don’t rely on a generic drawing.

Get the Right Part: Use Factory Diagrams

Each page shows an exploded view with callout numbers. Match the callout to the part number list. The quantity column tells you how many to order. Simple system, but only when the diagram matches your exact machine. That’s what this catalog delivers.

If you work on other Fiat-hitachi models, the Fiat-hitachi 850-3, 850LC-3, 870H-3, 870LCH-3 Parts Catalog covers larger excavators. For compact machines, see the Fiat-hitachi ZX50U-2 Parts Catalog – 120 Pages of OEM Specs. And for the big iron, the Fiat-hitachi ZX500LC, ZX500LCH Parts Catalog – 464 Pages has you covered.

For background on why OEM documentation matters in the Automotive Industry Overview, note that parts catalogs use standardized numbering. The Automotive Industry Overview also explains how aftermarket suppliers often deviate from original specs.

Does this catalog include engine parts?

Yes. The ENGINE section covers mounting, support, and radiator components. Engine internal parts are in a separate Isuzu engine catalog.

How do I read the model code in the catalog?

The catalog uses codes like <120> for EX120-5, for EX120SS-5, for EX120-5HG, for EX120-5LV, for EX120-5X, for EX120-5E, for EX120-5Z, for EX130H-5, for EX130K-5. Parts without a code fit all models. Page 5 of the foreword explains the notation. Always check the plate on your machine’s main frame for the model and serial number before ordering. The index at the back also lists part numbers with asterisks for new parts. Using the wrong code can lead to ordering a part that doesn’t fit, costing you time and money.

Stop guessing part numbers and get this official catalog. Access the Factory Manual now to start ordering correctly.