Description

Mitsubishi K4C, K4D, K4E, K4F 1988 Parts Catalog

I’ve been turning wrenches for twenty-eight years, and I can tell you the difference between a job that goes smooth and one that turns into a parts-chasing nightmare. It starts with having the right part number in your hand before you phone the dealer. This Mitsubishi K4C, K4D, K4E, K4F 1988 Parts Catalog is the real deal – a factory-issued Mitsubishi Heavy Industries document, not some scanned copy that lost resolution on the critical digits. You want to order a cylinder head gasket for a K4E? You need the exact Key No. from page 14 of this catalog, not a guess from a third-party website.

What This Parts Catalog Actually Covers

This is a 151-page OEM parts list for the Mitsubishi K4C, K4D, K4E, and K4F diesel engines built for industrial use, marine, generator, tractor, and other applications. It groups parts by system: ENGINE (crank case, oil pan, cylinder head, main moving parts, timing), FUEL SYSTEM (supply, injection pump, nozzle holder, filter), GOVERNOR SYSTEM, LUBRICATION SYSTEM, COOLING SYSTEM, INLET & EXHAUST SYSTEM (air cleaner, intake/exhaust), ELECTRICAL SYSTEM (starter, alternator), INSTRUMENT PARTS, TOOL, REPAIR GASKET KIT, and OPTIONAL PARTS. The last section includes an effective engine number index (page 122) and a Parts No. index (page 127) so you can cross-reference any superseded or updated component. That index alone saves an hour of scrolling through microfiche.

For example, need a nozzle holder for a K4F fuel system? Turn to page 48 in the Fuel section. The table lists exploded views with Key Nos., the part number, quantity per engine, and a Replaceability symbol (O, X, Y, Z, #). The manual explains those symbols on page 3 – I’ve seen guys order the wrong injector because they ignored that “Y” marking. Don’t be that guy.

7 Systems Broken Down by Group Index

The Group Index on page 1 splits the engine into 11 main groups, but the catalog actually organizes content under 7 broad systems. Each system has sub-groups (e.g., FUEL SYSTEM → FUEL INJECTION PUMP). The numbering is consistent across all four engine models, so a K4C crank case section (page 2) mirrors the K4D layout. That’s the kind of systematic thinking you expect from a factory manual – not some aftermarket binder that renumbers everything after a revision.

Here’s what each major group covers:

• Engine – crank case, oil pan, cylinder head, main moving parts, timing (pages 2–28)
• Fuel – supply, injection pump, nozzle/holder, filter (pages 30–54)
• Governor – governor parts (pages 56–60)
• Lubrication – lubricating parts (pages 62–66)
• Cooling – cooling parts and radiator (pages 68–74)
• Inlet & Exhaust – air cleaner, intake/exhaust (pages 76–82)
• Electrical – equipment, starter (1.6/2.0 kW), alternator (15/35/40/50 A) (pages 84–108)

That covers the entire engine except the block itself. If you’re rebuilding a K4D and need pistons, rings, or bearings, look under Main Moving Parts (page 18). The catalog lists STD and oversize options where applicable.

OEM Catalog vs Aftermarket Part Lists: What You Get

I’ve had customers bring in aftermarket parts catalogs that misprint piston ring end-gap specs by 0.005 inch. This Mitsubishi catalog gives you the genuine part number straight from the factory. The header on every page reads “MITSUBISHI GENUINE PARTS” – they even print a warning on page 2 about imitation parts being inferior in material and manufacturing. When you order a fuel filter for a K4E from this catalog, you get the part Mitsubishi intended, not a universal replacement that might leak at the seal. The Replaceability codes (O, X, Y, Z, #) ensure you know whether a new part works with your engine serial number. Page 4 defines those codes in plain language.

If you want comparable documentation for other Mitsubishi diesel engines, check out Mitsubishi S3L2 2009 Parts Catalog – OEM Factory Specs or Mitsubishi S6A3-PTA PTK 1991 Parts Catalog – Factory OEM Specs. For a larger 4-cylinder industrial engine, see Mitsubishi 4DQ50 Parts Catalog – OEM Diesel Engine Specs.

How to Read the Key Number and Model Column

Don’t skip the “How to Use Parts List” section on page 3. It explains that the Key No. in the illustration corresponds to a row in the table. The “Model & No. Req’d” column lists the quantity for each engine variant – for example, a K4C-61HA (industrial) might require 1 of something while a K4F-62SDG (generator) needs 2. If a part was modified, the old quantity is marked with an “O” to indicate the change. The Replaceability symbol then tells you whether you can mix old and new parts. This matters when you’re rebuilding an older K4D that’s been updated over the years.

The catalog also includes an Effective Engine No. table (page 122) that lists which serial numbers correspond to which model variant. If you have a K4E with a 61SC compressor application, you can confirm the correct parts set. Aftermarket catalogs skip this detail – and that’s how you end up with a starter that has the wrong mounting flange.

Who Needs This Catalog and Why

If you own a boat, generator, tractor, or industrial machine powered by a Mitsubishi K4-series diesel, this catalog is the only reliable way to order parts. The Automotive Industry Overview shows that industrial engines often get rebuilt multiple times – having the original part book prevents you from buying mismatched components. The electrical section covers alternators from 15A to 50A, so you can match your charging system. Even the Automotive Battery connection matters: the wiring diagrams (though not full schematics in this doc) identify the correct cable terminals from the starter to the battery.

This is not a repair manual – it’s a parts identification tool. You still need a service manual for removal and installation torque specs. But when you’re standing at the dealer counter, you hand them a part number from this catalog, not a description. That’s the difference between walking out with the right gasket in ten minutes versus waiting three days for the wrong one.

Q: Does this catalog include torque specifications for cylinder head bolts?

No. This is a parts catalog, not a service manual. It lists every replaceable component (gaskets, bolts, seals) and their part numbers, but does not include installation procedures or torque values. You need a separate factory service manual for tightening specs. The catalog’s value is in identifying the correct part number – especially for fuel injection nozzles and cylinder head gaskets – so you don’t order the wrong size.

Q: Can I use this catalog for a K4C engine built after 1988?

Yes, with caution. Mitsubishi issued updates; the catalog includes an “Effective Engine No.” table on page 122 that lists which serial numbers each part applies to. If your engine number falls within a listed range, the part numbers are valid. Otherwise, cross-check with the Parts No. Index on page 127 for supersessions.

Stop playing parts roulette. Access the Factory Manual and get the genuine Mitsubishi part numbers before you order anything.