Description

Yanmar 4TNE84T Parts Catalog – 40 Pages of Factory Part Numbers

I’ve been rebuilding diesels since the 90s, and nothing burns my time like cross-referencing a scuffed part number from a greasy photocopy. This Yanmar 4TNE84T Parts Catalog is 40 pages straight from the factory. Page 2 gives you the cylinder block assembly: block assy, cylinder, plug PT1/4, plug 50, plug 30, bolt metal cap, main bearing, thrust metal, camshaft bush, stud cyl. head, gasket cyl. head – all with genuine Yanmar part numbers. You don’t guess what M8x14 plated bolt goes where. You read the line: 26106-080142. That’s the part. No second-guessing, no aftermarket reprints.

Cylinder Block Assembly – What Page 2 Shows

The first two pages are the engine core. You get the block, the plugs, the bearings, the head studs. Every fastener is listed with its size and plating. Notice the main bearing set is item 129001-02930, and the thrust metal OS=0.25 is listed separately. If you’re rebuilding a 4TNE84T, you need these numbers to order oversize bearings. The catalog doesn’t tell you how to install them, but it tells you exactly what to buy. That’s the difference between a parts catalog and a service manual – and right now, you need the part number.

Gear Case and Housing: OEM Numbers Save Time

Page 4 covers the gear case assembly. Flange, gear housing, stud M8x22, gear case assy, oil seal, cap lub. oil supply, cover HO-P, gasket non-asb., knock pipe, retainer, O-ring F.I. pump, O-ring 1A P-16.0, O-ring 1A P-32.0. Bolts from M8x12 plated up to M8x85 plated. Each one has a part number. If you replace a gear case gasket, you want the exact non-asbestos gasket – not a generic cut piece. This catalog lists gasket, HO-P bracket (item 30). That’s how you avoid leaks on a $10,000 engine.

40 Pages – Enough to Find the Right Part?

Forty pages sounds thin for a diesel parts catalog. But Yanmar packed it. The index on page 1 puts the engine in section: INDUSTRIAL, SMALL VERTICAL (B). Then every page is a tight grouping of figures. Figure 1 (page 3) is the cylinder block. Figure 2 (page 4) is the gear case. Each figure covers one subassembly with a clean parts list. No fluff. No exploded-view porn. Just the numbers you need.

Is This Parts Catalog for You?

If you’re a home garage guy rebuilding a Yanmar 4TNE84T for a generator or skid steer, this catalog saves you the headache of ordering the wrong main bearing. If you’re a shop owner with a customer’s engine torn down, you hand this catalog to the parts runner and say “get me item 14, 129408-02800 – main bearing set.” On the workbench, that’s gold. Beginners: don’t expect step-by-step removal instructions. This is a parts catalog. Pair it with a service manual. For that, check our Ammann Yanmar B12 B17 Parts Catalog Ammann Yanmar B12 B17 Parts Catalog or the Yanmar YB271, B27 1994 Parts Catalog – OEM Factory Specs Yanmar YB271, B27 1994 Parts Catalog – OEM Factory Specs for related models. If you need the YB301/YB351, we also have Yanmar YB301 YB351 1991 Parts Catalog – 248 Pages OEM Yanmar YB301 YB351 1991 Parts Catalog – 248 Pages OEM.

Source Validity – Why OEM Matters

This catalog comes from the original Yanmar factory print. The part numbers in the OCR match the printed pages: 729638-01560 for block assy, 129150-02020 for bolt metal cap. Aftermarket catalogs often renumber parts or leave out the “OS” (oversize) options. This one has them. The automotive industry has specific standards for identifying parts – see Automotive Industry Overview for context on why OEM documentation is critical. Trust a factory print over a third-party scan every time. Automotive Industry Overview

Does this manual include torque specs?

No. This is a parts catalog, not a service manual. You need the service manual for torque values.

How do I find a specific part number?

Use the index on page 1. It lists the engine group and section. Then flip to the figure that shows your subassembly. Each part has an item number, part number, and description. For example, main bearing set is item 24 on page 2.

Can I use this to rebuild the entire engine?

You can use it to order every gasket, seal, bearing, and bolt you need. But assembly steps, clearances, and torque specs are not here. Combine it with a factory service manual for a complete rebuild.

Is the PDF searchable?

Yes, the file includes OCR text. You can search for part numbers like 129150-02020 and jump to the page. That saves scrolling through 40 pages.

You’ve got the part numbers. You’ve got the OEM source. Don’t waste time matching bolts by eye. Access the Factory Manual and get the right parts the first time.