Kubota 01S001, 01S002 Parts Catalog – No Aftermarket Guesswork

If you’ve ever ordered a part for a Kubota engine or excavator based on a blurry aftermarket image and ended up with a piston that doesn’t fit, you know the pain. That’s why this Kubota 01S001, 01S002 Parts Catalog exists. It’s the same document the dealer counter uses: OEM, factory-original, 273 pages of part numbers, exploded diagrams, and weights in kilograms and pounds. No reprints, no copies, no third-party speculation.

Crankshaft and Piston Assembly: Manual Part Identification

The engine is the heart, and if you’re rebuilding, you need the exact crankshaft and piston group. This catalog breaks down the “PISTON CRANKSHAFT” section with part numbers for pistons, rings, wrist pins, and the crankshaft itself. Page 3 shows the Kolben Kurbelwelle diagram with references to 01S003—but the 01S001 and 01S002 variants have their own specific callouts. Each item lists the part number, description, quantity, and weight. When you’re ordering from a dealer, you hand them the Art.Nr. from this book. No confusion.

Cylinder Head and Valve Train: OEM Part Numbers for the Top End

Cylinder head, valves, rocker arms—each listed under its own heading. The “CYLINDER HEAD” and “VALVE ROCKER ARM” chapters include every component from valve guides to rocker shaft plugs. If you’ve got a noisy valve train or a blown head gasket, you can cross-reference the part numbers here before you buy. The catalog includes both the 01S001 and 01S002 serial number ranges, so you know which part fits your build date. We’ve seen guys install the wrong valve spring because they trusted a generic site; this book stops that.

Fuel System Piping and Tank: Where OEM Matters Most

Fuel leaks are dangerous. The “FUEL PIPING” and “FUEL TANK” sections list every line, fitting, and tank component. Seals, clamps, even the specific banjo bolts—all with Kubota part numbers. Unlike aftermarket lists that omit the crush washers, this catalog gives you the exact O-ring and gasket sizes. Page 2 (the oil pan section) also shows the oil filter and dipstick part numbers, which are often misordered. Don’t rely on a parts store cross-reference for fuel system parts; use the factory document.

Hydraulic Control Valve Spool Sections: A Detailed Breakdown

For the excavator and loader functions, the hydraulic control valve is covered section by section: “SPOOL SECTION TRAVEL RH”, “SPOOL SECTION BOOM”, “SPOOL SECTION BUCKET”, and more. Each spool, spring, and spacer has its own part number and weight. If you’re rebuilding a valve bank or replacing a stuck spool, you need the exact revision. The catalog includes separate listings for “CONTROL VALVE 1” and “CONTROL VALVE 3”, with component parts drawings. Without this, you’re guessing which shim stack goes where.

Source Validity: OEM vs Aftermarket Parts Lists

Aftermarket parts catalogs often list a single “universal” part number for a crankshaft or camshaft that actually varies by serial number. This Kubota catalog is the factory document—no reprint, no third-party reinterpretation. The part numbers and diagrams come straight from Kubota’s engineering. We’ve seen shops lose hours because an online “parts list” showed the wrong camshaft gear; with this OEM catalog, you verify before you order. The PDF also includes cross-weight in pounds (lb) alongside kilograms, which is handy when shipping heavy components.

Related manuals you might need for a full rebuild: Kubota Crankcase Oil Pan Parts List”>Crankcase Oil Pan Parts List (if your unit uses a different oil pan variant). For the V3300 engine family, check the Kubota V3300-T-E2B-EPS-1 Parts Catalog – 53-Page OEM Parts Breakdown”>V3300-T-E2B-EPS-1 catalog. If your machine is a compact excavator with a YU or YW chassis, the Kubota YU4210, YW0981 Parts Catalog – 274-Page OEM Parts Breakdown”>YU4210/YW0981 catalog pairs well with this one for the undercarriage and cab.

For context on why OEM documentation matters in heavy equipment, see the Automotive Industry Overview”>Automotive Industry Overview on parts standardization. Automotive Industry Overview

FAQ – Common Questions About the Kubota 01S001, 01S002 Parts Catalog

Does this catalog include torque specs or assembly instructions?

No. This is a parts catalog, not a service manual. You get part numbers, exploded views, quantities, and weights. For torque values and assembly steps, you need the factory service manual for your specific model.

Can I use this catalog to rebuild the engine?

Yes, for ordering parts. It identifies every gasket, seal, bearing, piston, and ring. But you still need a service manual for clearances, torque sequences, and tolerances. Combine both for a complete rebuild.

Are these part numbers still current?

Some may have been superseded. Kubota updates parts over time. This catalog reflects the original production parts. Always check with a Kubota dealer for the latest supercession before ordering.

Is this the same as the dealer’s parts system?

Yes. This is the OEM printed catalog that Kubota dealers use. It’s the same part numbers and illustrations they reference when you bring them a serial number.

When your machine is down, waiting on the wrong part only makes it worse. This is the exact document you need to order right the first time. Download the Factory Manual and keep it on your shop tablet or print the pages you need.