Description

YMZ 238Б, 238Д 2002 Parts Catalog

You’ve got a YMZ 238Б or 238Д diesel sitting in the bay, and you need a water pump gasket, a fuel line clip, or maybe a cylinder head bolt. You pull up some aftermarket cross-reference site, and the part numbers don’t match what’s stamped on the old one. Next thing you know, the part shows up and it’s the wrong thread pitch or a different coating. That’s lost time, lost money, and a pissed-off customer. I’ve been turning wrenches for 28 years, and I’ve seen more comebacks from wrong parts than from bad repairs. The fix is using the factory documentation — not some third-party reprint. This YMZ 238Б, 238Д 2002 Parts Catalog is the real deal: a direct scan of the original Russian-language catalog, 160 pages, published by ОАО “Автодизель” (ЯМЗ) in 2002. It shows you exactly what parts go where, which coatings are specified, and how to tell if a newer part will swap in. No guesswork.

Why a Factory Parts Catalog Beats Aftermarket Cross-Reference

Every time I see a DIY guy trying to match a part number from a generic database, I cringe. The aftermarket might get the shape right, but they miss the subtle changes — like a bolt with a P29 zinc coating versus an older P5 copper coating. That difference matters when you’re bolting into an aluminum block in a humid climate. The factory catalog from this Wikipedia article on diesel engines won’t tell you that, but this parts catalog will. It lists every fastener with a six-digit number plus a dash and a coating code. You get the exact OEM part number, not a “will-fit” substitute. For engines built for MAZ, KrAZ, Ural, MZKT trucks, and heavy equipment, accuracy isn’t optional.

Interchangeability Codes: What the Letters Mean

Look at page 3 of the catalog. The preface explains the coding system clearly. If a part number ends with A, A1, A2, A3, or two-digit suffixes like 01, 02, that part is interchangeable with earlier versions. If the suffix is Б, В, Г, Д, or 10, 20, 30, the part is NOT interchangeable. The catalog prints bold part numbers for the recommended service stock. I’ve had techs ignore these codes and order a non‑interchangeable part, then spend an hour fighting a bolt that won’t seat. Don’t be that guy. Learn the code.

Fastener Coatings and Part Number Breakdown

Each fastener in this catalog gets a coating suffix: П (no coating), П2 (phosphated and oiled), П5 (copper plating), П15 (oxidized), П29 (zinc plated and passivated), П34 (passivated only). That info is printed right next to the part number. When you’re rebuilding a YMZ 238Д that’s been sitting in a damp mine, you want P29 fasteners, not raw steel. The catalog lists each fastener’s coating so you order the right corrosion protection. No need to guess — it’s on the page.

160 Pages of Authorized Spare Parts Nomenclature

This isn’t a service manual with torque specs and repair procedures. It’s a parts catalog — and it’s 160 pages of illustrated assemblies with every nut, bolt, gasket, and seal called out. Each illustration shows the unit with numbered callouts; the accompanying table lists part numbers in order. If you’re rebuilding a fuel pump or a cylinder head, you can scan the drawing, find the number, and order it. The catalog covers both the YMZ 238Б and 238Д variants, so cross‑referencing between models is built in. Need the charge pressure? Page 73 — wait, wrong manual. In this catalog, you’ll find the parts for the fuel system on the illustrated plates. No page‑number spam here, just the data you need.

Audience Fit: Who Needs This Catalog

If you’re a home garage guy with a diesel truck that uses a YMZ 238 series engine — like a KrAZ or Ural military truck, a bulldozer, or an excavator — you need this. If you’re a small shop taking on older Russian equipment, you need the factory nomenclature to avoid ordering parts that don’t fit. The catalog uses metric part numbers and Russian text, but the drawings are universal. The preface is bilingual (Russian and English), so you can navigate the codes. Pair it with a factory service manual for torque specs and repair steps. Related parts catalogs you might need: YMZ 650.10 2009 Parts Catalog for later engines, or YMZ ЯМЗ-236ДК/238АК 2002 Parts Catalog for the 236/238 family. For older agricultural equipment, see Massey-Harris-Ferguson FF 30 GS 1957 Parts Catalog | OEM Fastener Guide.

Source Validity: Original OEM Print, Not a Hack Job

This catalog is an authentic factory document from YMZ (Ярославский Моторный Завод). The file name YMZ_238-238_2002_Parts_Catalog_ru-en-91914016494.pdf matches our internal verification. No redactions, no reprints. The original 2002 edition includes the preface from September 1, 2002, and lists all changes up to that date. When you order a part using numbers from this catalog, you get the part the factory intended. I don’t trust aftermarket documentation on principle — they miss coating codes, they drop interchangeability flags, and they often truncate the part number. This catalog has it all.

Does this catalog include repair procedures or torque specs?

No. This is strictly a parts catalog. It lists part numbers, illustrations, and interchangeability codes. For torque specs and repair steps, you need the corresponding YMZ service manual (sold separately). Don’t try to use this as a repair guide — you’ll strip something.

How do I interpret the part number suffixes like “A1” or “Б”?

The preface on page 3 explains it: suffixes with A, A1, A2, A3 or 01, 02, 03 indicate full interchangeability with earlier versions. Suffixes with Б, В, Г, Д or 10, 20, 30 mean the part is not interchangeable — it’s a different design. Parts printed in bold in the catalog are the recommended trade items for stocking. The fastener coating codes (П, П2, П5, П15, П29, П34) are listed in the preface as well. Always check the suffix before ordering. I’ve seen a tech order a water pump with suffix 01 when the engine needed suffix 10 — the bolt pattern was different. Saved him a return by reading the catalog before buying.

If you’re working on a YMZ 238Б or 238Д, stop guessing and start using the right data. Access the Factory Manual from AutoRepairManuals and keep it on your workbench. The 160-page original PDF is yours instantly — no shipping, no waiting. You’ll have every part number, every coating spec, and every interchangeability code at your fingertips. That’s the difference between a job that goes right and a parts scavenger hunt.