Description

Kubota TW320, TW330 Parts Catalog – 84 Pages of OEM Factory Parts

I’ve been turning wrenches for 28 years, ASE Master, and I’ve lost count how many times I’ve seen a job go sideways because somebody ordered the wrong part number from a third-party source. That’s money down the drain and a machine sitting dead. This Kubota TW320, TW330 Parts Catalog is the factory document – 84 pages of OEM part numbers, exploded views, and group indexes. You need this if you’re working on a TW320 or TW330 vibrating roller and want to order the right part the first time. The manual covers the engine (Kubota D1703-M-ET01 – separate engine parts catalog applies), fuel system, cooling system, intake, exhaust, controls, steering hydraulics, drive hydraulics, vibrating roll, frame, electrical – everything down to the seat and sprinkler. Page 3 lists the group names with chassis number applicability for TW320-1 and TW330-1. That’s how you verify you’re looking at the correct section for your machine.

Engine System, Fuel System, Cooling System – What the TOC Shows

The table of contents on page 3 dives straight into the groups. You get Engine System, Fuel System, Cooling System, Intake System, Exhaust System – all with their own group name and part number prefixes. For example, the Fuel System group is code 0425-02802-0-10027-0. The manual directs you to the appropriate exploded view and part numbers. If you need a cooling fan shroud or a fuel injection line, you’ll find the exact OEM number here. No aftermarket cross-reference. These are the same diagrams the dealer uses. I’ve used these catalogs to source gaskets for the D1703-M-ET01 block – it’s all there. The Cooling System section (page 3, group 3) covers the radiator, hoses, and fan assembly. Don’t trust a generic catalog that claims “fits TW320” without verifying the part number. This manual gives you the numbers and the chassis range they apply to.

7 Systems Covered for the TW320 and TW330

Besides the big three – Engine, Fuel, Cooling – this catalog covers Control System (Throttle and Reversing), Steering Hydraulic System, Steering Wheel, Hydraulic System (Pump Mounting, Drive, Vibrating), Vibrating Roll, Rear Wheel, Brake System, Frame (including Center Pin), Seat, Scraper, Sprinkler, Liquid Spray, and Electrical Equipment. That’s 23 groups total. Each group has its own exploded diagram and parts list. For the vibrating roll itself, there are two groups: one for TW320 (group 17) and one for TW330 (group 18 – partially shown in the OCR). The catalog clearly separates which parts apply to which chassis. If you have a TW330, you don’t need to guess whether a roll bearing from a TW320 fits – the manual tells you.

Who Needs This Parts Catalog?

If you own a TW320 or TW330 vibrating roller, or you work on them for a living, this is the document you keep in the glovebox or on your tablet. DIY operators who maintain their own equipment will use it to order water pump seals, hydraulic filters, or steering cylinders. Professional mechanics bill by the hour – you can’t waste time flipping through aftermarket websites that show generic images. This catalog gives you the part number, the quantity (per unit), and whether the part is supplied as an assembly or individually. The “Guide for Use of Parts Catalogue” on page 1 explains how to read the remarks: “Inc.O-O” means assembly parts, “A/S” means supplied as an assembly. That kind of detail saves you from ordering a seal when you really need the whole pump kit. Beginners: read page 1 first. It tells you to quote model, chassis number, part number, part name, and quantity when ordering. Do that, and you won’t get the wrong part.

OEM vs. Aftermarket Documentation – Why I Won’t Touch Aftermarket Catalogs

Aftermarket parts catalogs are crowd-sourced, mismatched, or scanned from god knows where. I’ve seen them list a part number that doesn’t exist in Kubota’s system. The factory catalog from AutoRepairManuals is an original OEM print – the same PDF that Kubota dealers use. The OCR excerpt shows Japanese and English group names side by side. That’s genuine factory formatting. When you order parts from a dealer, they pull up this exact document. If you’ve got a TW320 with chassis number 4TW50-40101, you can verify part applicability down to the serial range. You don’t get that from a third-party site that says “fits TW320” without any serial number breakdown. For example, the vibrating roll group for TW330 starts at chassis 4TW51-40101. If your machine is before that number, you need a different roll assembly. The manual marks it clearly: “No.10007: Applicable up to 10007; No.10008-: Applicable from 10008”. That’s the kind of precision you need to avoid ordering a US$800 part that doesn’t bolt on.

How to Use the Guide for Ordering Parts – What Page 1 Says

Flip to page 1 of the PDF. It tells you exactly what information to have ready: vehicle model (TW320 or TW330), chassis number (engraved on identification plate and frame), part number, part name, and quantity. The manual also explains that quantities shown are per unit, except for assembly parts (which show the quantity included in one assembly). If a part has “(cf.)” in the remarks, it means the part is supplied as an assembly represented by the key number with “cf.” attached. For example, a fuel injection pump might be listed as an assembly; you order the key number’s part number, not the individual seals. I’ve had technicians tell me they ordered a seal kit only to find out they needed the whole pump assembly because the manual said “A/S”. This catalog prevents that. Also note: part numbers with a “s” mark indicate that they have been corrected to the numbers listed just below. Those are superseded part numbers – you order the one below. Any mechanic who ignores supersession sticks the customer with a non-interchangeable part. Don’t be that guy.

Does this parts catalog include the engine D1703-M-ET01?

The manual explicitly states on page 1: “For the ENGINE (KUBOTA D1703-M-ET01), see the parts catalogue compiled separately.” This catalog covers everything around the engine – mounting brackets, belts, cooling system, exhaust – but not the engine internal parts. You need the separate engine parts catalog for piston rings, cylinder head gaskets, etc. This is standard for Kubota; they break out the engine as a separate module.

What is the difference between the TW320 and TW330 sections?

The table of contents on page 3 shows which groups apply to each model. For example, group 11 (Hydraulic System Drive) applies to both TW320 and TW330, but group 12 applies only to TW320 and group 13 only to TW330. The vibrating roll groups are also separate: group 17 for TW320, group 18 for TW330 (the OCR cuts off at group 17, but the source file continues). The part numbers differ. Do not assume interchangeability – always check the “Applicable Model” column marked with ○ for that chassis.

I’ve used plenty of OEM catalogs over the years, and this one follows the standard Kubota layout. The part numbering convention is consistent: eight digits (e.g., 0445-01803-0-10600-0). If you need to find a hydraulic pump for the steering system, you look in group 8 (Steering Hydraulic System) and find the exploded view for your chassis range. The manual tells you which pump mounts on the TW320 vs TW330. Don’t waste time on phone calls to the dealer parts counter when you have the numbers right in front of you. That’s why I keep a copy of these catalogs on my shop tablet. You can do the same. Kubota V3300-T-E2B-EPS-1 Parts Catalog – 53-Page OEM Parts Breakdown is another good resource if you work on V3300 engine variants. For compact tractor mower decks, look at Kubota YU4210, YW0981 Parts Catalog – 274-Page OEM Parts Breakdown or Kubota RCK60-27B Parts Catalog – 27-Page OEM Breakdown. The Automotive Industry Overview is a general resource, but for factory Kubota parts, stick to the OEM manual. Automotive Industry Overview won’t help you find the right bearing for a vibrating roll. Access the Factory Manual – it’s the only way to guarantee you’re ordering the exact OEM part number Kubota produced.