Description

Kubota V1902 Parts Catalog – 33-Page OEM Breakdown for Crankcase, Oil Pan, and More

You order a part for a Kubota V1902 engine, the box shows up, and it doesn’t fit. Thread pitch is off. Seal diameter is wrong. The machinist at the counter shrugs and says “aftermarket cross-reference.” That’s the problem right there – guesswork. A factory Parts Catalog kills that guesswork dead. This one runs 33 pages, straight from Kubota’s engineering files. No third-party reshuffling. No missing codes. Open it on the bench next to the engine and start matching REF numbers to the actual hardware.

Crankcase Group Breakdown – 7 Plug Types and a Liner Kit

Page 1 covers the crankcase group. You get the complete crankcase assembly (REF 15411 0101 3), four different expansion plugs (REF 06311 75018, 06311 75045, etc.), two sealing caps, straight pins, and the cylinder liners (REF 15521 0231-0). That liner part number alone saves you a phone call. Each plug has a unit count and a CODE number – no confusion about which plug goes where on the block. The exploded diagram shows the O-ring (REF 15221-3370-0) and the drain cock gasket. Ordering a gasket set? Use this page to verify every redundant seal.

Need the Right Oil Pump Seal? Page 2 Lists It

Oil pump assembly is on page 2. The OEM pump group (REF 15471-3501-0) includes the gasket (REF 15221-3515-0), drive gear, key, nut, and washer. Four bolts hold it together – part number 01053-50650. Also on that page: the oil pressure switch (REF 15521-3901-0) and the drain cock (REF 14412-7311-0). If you’re swapping an oil pan or resealing the pump, you need these numbers exact. Aftermarket catalogs sometimes combine the pump gasket with the pan gasket; this manual keeps them separate.

Verify Part Numbers Against Your Engine Serial Number

The first page includes a serial number field and revision code. Before you order, check the serial number on your V1902 block against the revision stamp in the catalog. Kubota changed plug types and pin lengths over production runs. A straight pin (REF 05012-00408) versus a pipe pin (REF 15221-3365-0) – one goes into the crankcase face, the other into the oil pump housing. Wrong pin, loose alignment. That’s a leak waiting to happen.

Interchangeability Codes: Why They Matter on Vintage Diesels

Every page includes columns for “UNIT INTERCHANGEABILITY ÉCHANGEABILITÉ AUSTAUSCH.” Those codes tell you if a part from an earlier V1902 revision fits your engine. Don’t ignore them. I’ve seen guys slap a newer oil pan gasket on an old block and have it weep because the bolt pattern shifted by 2 mm. The codes appear next to each REF number. Cross-reference them before you buy. That’s how you avoid returning a $200 oil pan assembly.

33 Pages of Factory Data – No Spec Left Out

Total page count is exactly 33 pages. That includes the crankcase group (pages 1-3), oil pump, cylinder head components, and the remainder of the short block. Each page is a facsimile of the original Kubota bulletin – same three-language layout (English, French, German), same part-number hierarchy. If you need a part number for a 1980s V1902 that’s been through two rebuilds, this catalog is the only reliable source. For related engines, see the Kubota V3300-T-E2B-EPS-1 Parts Catalog – 53-Page OEM Parts Breakdown and the Kubota YU4210, YW0981 Parts Catalog – 274-Page OEM Parts Breakdown for larger frame equipment. Deck parts? The Kubota RCK60-27B Parts Catalog – 27-Page OEM Breakdown covers RCK60 mower decks.

Who Should Use This Parts Catalog

This is for the guy who pulls a V1902 out of an old tractor, a generator head, or a skid steer and needs to rebuild the bottom end. DIY machine owners, small diesel shops, and farm mechanics. If you’re ordering a cylinder liner kit or an oil pump rebuild, the catalog gives you the original Kubota REF number – not a cross-reference that “might work.” That matters when the engine has to run 12 hours a day in a feed grinder. The Automotive Industry Overview shows how standardized part numbering keeps machinery running across decades – this catalog lives by that standard.

OEM Kubota Documentation vs Aftermarket Reprints

I’ve worked with aftermarket parts books that swap the plug style or skip the revision column. That’s how you end up with a 19 mm expansion plug where a 16 mm belongs. This file is a direct scan of Kubota’s original parts catalog. The OCR excerpt shows the actual layout: REF numbers, CODE numbers, quantities, and the exploded diagram. If you see “05212-0010” for the oil pump key, that’s the factory string. No guessing which aftermarket vendor “improved” the drawing. The Automotive Industry Overview touches on the liability of using non-OEM part references – but you don’t need to read that to know a wrong plug means an oil leak and a tow bill.

Does this catalog include repair procedures?

No. This is a parts catalog – exploded views, part numbers, interchange codes, and quantities. You’ll need the service manual for torque specs and removal steps.

Can I use it to rebuild a V1902 from bare block?

Yes – the catalog covers crankcase, oil pan, cylinder liners, oil pump, and related hardware. Pair it with the factory service manual and you’ve got the full picture.

Are the part numbers still current?

Kubota supersedes numbers over time. Use the REF and CODE columns. If a number is superseded, the revision stamp on page 1 indicates which update applies.

What if my engine serial number doesn’t match the revision listed on page 1?

Check the interchangeability codes in the far-left column. A “Y” means the part swaps across revisions. A blank cell means verify with Kubota dealer – the catalog includes a note on that.

You’ve got the engine open on the bench, the old part in your hand, and you need the right number. This catalog gives it. Access the Factory Manual now and stop losing time on aftermarket cross-reference.