Description

Kubota D1302-BBS-1 1990 Parts Catalog

If you’ve ever ordered a part for a Kubota D1302-BBS-1 and ended up with the wrong water pump or a seal that doesn’t fit, you know the headache. I’ve seen it—guys pull an engine down, then sit on hold for an hour because the parts counter can’t decode the old part number. That’s time you don’t get back. This Kubota D1302-BBS-1 1990 Parts Catalog fixes that. It’s the exact same 52-page OEM book that Kubota dealers used in 1990. No aftermarket reprints, no guessing.

52 pages. That’s what you get—every single one scanned from the original factory release. The manual covers the D1302-BBS-1 diesel engine with illustrated parts lists in English, French, and German. You get code numbers, reference numbers, and interchangeability indicators that tell you when a part supersedes another. No more cross-checking three different websites.

Water Pump Assembly – OEM Part Numbers You Can Trust

The water pump section (group E05) lists the complete assembly. You’ve got two part numbers for the pump: 16241-7303-0 (up to serial number break) and 16241-7303-2 (after). The manual shows you the ball bearing (16241-7355-0/2) and the mechanical seal assembly (16241-7305-0/2). Each part has a quantity and a remark column that flags interchangeability. If you order the wrong bearing because you didn’t check the serial number, that’s on you. This catalog lays it out so you don’t waste a Saturday.

Understanding the Parts List Layout

Left-hand pages are numbered XXX-L, right-hand XXX-R. Each illustration has dotted lines around assemblies—parts inside those brackets aren’t sold separately. You need the whole assembly or you order the individual component? The manual answers that with a dot symbol next to the part. Reference numbers in the illustration match the REF. No. column in the list. Simple once you look at page 3 and 4. Memorize that and you’ll read this catalog faster than most techs read a wiring diagram.

3 Ways to Verify Part Fitment

First, check the S.No. (serial number) column. Kubota stamped a range like ~550100 on early engines. Second, use the I.C. (interchangeability) column. Example-1: square brackets mean a new part can replace an old one but not vice versa. Example-2: no brackets means they’re not interchangeable. Example-3: open brackets mean both ways work. Third, always confirm the code number—that’s the 11-digit number starting with 16241 for water pump parts. Don’t rely on description alone; the code is the final word.

Does This Catalog Include Service Specifications?

No. This is a parts catalog, not a repair manual. You won’t find torque values, clearances, or overhaul procedures here. What it does give you is the exact bill of materials for the engine. If you’re rebuilding a D1302-BBS-1, you still need the factory service manual for assembly specs. But without this catalog, you’ll be guessing which seals and gaskets to order. I’ve seen guys buy a generic gasket set and end up with the wrong thickness. Don’t be that guy.

Get the Right Seal and Bearing – No Room for Guesswork

The water pump section lists two mechanical seal assemblies: 16241-7305-0 and 16241-7305-2. One fits up to serial number 550100, the other after. Same story for the ball bearing. If you try to use the old bearing in a new pump, it’ll fail. The catalog tells you exactly which part goes where. Order both the seal and bearing together so you don’t have to pull the pump twice. That’s a tip from 28 years in the shop.

Working on other Kubota engines? Check out Kubota V3300-T-E2B-EPS-1 Parts Catalog – 53-Page OEM Parts Breakdown for a similar diesel engine. For larger equipment parts, Kubota YU4210, YW0981 Parts Catalog – 274-Page OEM Parts Breakdown covers a wider range of models. And if you need mower deck components, Kubota RCK60-27B Parts Catalog – 27-Page OEM Breakdown gives you the same factory accuracy.

For context on why OEM documentation matters in the Automotive Industry Overview, look at how manufacturers control part numbering. The reliability of factory parts data is backed by decades of industry practice Automotive Industry Overview.

Frequently Asked Questions

Can I use this catalog to look up torque specs?

No. This is a parts catalog, not a service manual.

What is the difference between 16241-7303-0 and 16241-7303-2?

16241-7303-0 is the water pump assembly for engines with serial numbers up to 550100. 16241-7303-2 supersedes it for engines from serial number 550101 and above. According to the interchangeability table on page 4, the new part (7303-2) replaces the old, but not the other way around. If you try to put an old pump on a late engine, the seal won’t align. Always verify the serial number before ordering.

Is the manual in English?

Yes, the catalog includes English, French, and German text for part descriptions and notes.

Does it cover only the D1302-BBS-1?

Yes, this catalog is specific to the D1302-BBS-1 diesel engine model. Other Kubota engines have separate parts catalogs.

52 pages of factory-correct part numbers, illustrations, and interchangeability data. That’s what you get. Don’t waste time guessing part numbers—Access the Factory Manual and order the right parts the first time.