Description

Mitsubishi S4S-61SD, S4S-Y162SD, S4S-Y262SD, S4S-DT61SD, S4S-Z263SD 2009 Parts Catalog

You pull a head bolt and it snaps because you grabbed the wrong gasket set. Or you order a piston ring pack online, and it’s for the wrong bore size. That’s why you need the actual factory parts catalog. This is the 2009 Mitsubishi S4S-61SD, S4S-Y162SD, S4S-Y262SD, S4S-DT61SD, S4S-Z263SD Parts Catalog — 188 pages of OEM part numbers, exploded views, and supersession info. Not a reprint, not a third-party compilation. Direct from Mitsubishi Heavy Industries.

What This Catalog Covers – Engine Serial Ranges

Every engine model has a specific serial number range. The catalog covers S4S-61SD (055690-UP), S4S-Y162SD (071374-UP), S4S-Y262SD (112505-UP), S4S-DT61SD (147626-UP), and S4S-Z263SD (158155-UP). It also includes S4S-Z2DT62SD, S4S-Y362SD, and S4S-Y3DT61SD. If you’re working on a generator set built by SDMO, you’ve landed on the right document. The parts breakouts match the exact production cuts, so you don’t guess which water pump fits an early vs late block.

OEM Part Numbers – Not Generic Cross-References

Aftermarket parts catalogs love to say “fits Mitsubishi S4S.” That’s how you end up with the wrong injector line. This book gives you the genuine Mitsubishi part number. Example: the fuel injection pump assembly? It’s in the book with its unique number. No guessing, no calling three suppliers. For the S4S-DT61SD, the cylinder head gasket part number is right there. Page reference? Not needed — the catalog is organized by engine group, not page clutter. You work through the system, you find the part. That’s how OEM documentation works.

3 Reasons to Use the Factory Parts Catalog

• Correct fit: Engine serial numbers are printed at the top of each section. If your engine is S4S-Y162SD serial 075000, you use the parts listed under that range.
• Supersession: Mitsubishi updates parts. The catalog shows superceded numbers. You don’t order a discontinued part.
• Exploded diagrams: Every major assembly — cylinder block, cylinder head, timing gear, lubrication pump — is drawn with callouts. You see exactly how the parts stack.

One more thing: the catalog warns you about imitation parts. Page 4 of the PDF states: “Imitation parts are not reliable from the viewpoints of their material and manufacturing method.” That’s not marketing. That’s a tech saying don’t put a cheap bearing in a diesel that sees 3000 psi cylinder pressure.

Does This Manual Cover the Fuel System?

Yes, the fuel system section is included. Fuel injection pump, injectors, delivery valves, and the high-pressure lines for all six engine models. The S4S-Z263SD uses a different pump than the S4S-61SD. The catalog shows both. You want the delivery valve holder part number? It’s in the fuel system breakdown. No need to guess or call the dealer — though if you need a dealer, the catalog tells you to order from your nearest authorized dealer by specifying Mitsubishi genuine parts. That’s on page A1.

Torque Specs and Fluid Capacities? Not Here – But Here’s What Is

This is a Parts Catalog. It does not contain torque specs or service procedures. If you want cylinder head bolt torques, you need a separate service manual. What this book gives you is the skeleton key to ordering correct parts. You identify the part by its number, then you go to the service manual for installation specs. Many techs keep both documents open. The parts catalog lives next to the torque wrench. Need a new oil cooler for the S4S-Y262SD? Flip to the cooling system section. Done.

Who Needs This Catalog

If you rebuild Mitsubishi diesel engines — in generator sets, irrigation pumps, or industrial equipment — this catalog saves your wallet. Home garage guys who swap a Mitsubishi into a project? Get it. Beginners often think they can cross-reference aftermarket numbers. Bad idea. I’ve seen a guy order an S4S-61SD main bearing set for an S4S-DT61SD. The crank journal diameters are different. Shut the job down for two days. This catalog gives you the exact bearing number. No trust required — just read the exploded diagram.

Source Validity – Why OEM Beats Third-Party

A third-party parts list might compile numbers from various sources. Some are wrong. Some are close but not identical. This catalog is published by Mitsubishi Heavy Industries, Ltd. with Pub.No. 98615-SD080, dated June 2009. It’s the same document their dealers use. If you’re serious about engine reliability, you use the OEM source. For a comparison, check the Mitsubishi S3L2 2009 Parts Catalog – OEM Factory Specs, which has a similar structure for smaller engine families. Also relevant: the Mitsubishi S6A3-PTA PTK 1991 Parts Catalog – Factory OEM Specs and Mitsubishi 4DQ50 Parts Catalog – OEM Diesel Engine Specs. On the broader industry, Automotive Industry Overview explains why OEM documentation leads to fewer comebacks. And for battery cross-references, Automotive Battery specs matter less here, but you get the point.

How do I know this catalog covers the engine I have?

Check your engine serial number. The front page lists each model and the starting serial number. For example, S4S-61SD starts at 055690. If your engine falls within that range, the catalog applies. If your serial is below the start? You need an earlier edition.

Can I print this PDF and take it into the shop?

Yes. The PDF is 188 pages. Print sections as needed. Many techs print the cylinder head section and keep it in a sheet protector near the engine stand. Grease-stained pages are a badge of honor.

Don’t buy a counterfeit or a third-party compilation that claims to have “all engine parts.” Get the genuine article. Access the Factory Manual now and keep it on your tablet or printed binder. Your engine — and your wallet — will thank you.