Description

Mitsubishi K904C, K907B, K907C, YS750-2 1983 Parts Catalog

You need the right part number for a Mitsubishi K904C, K907B, K907C, YS750-2 1983 Parts Catalog. Aftermarket lookups waste time and deliver wrong parts. This OEM catalog puts the factory part numbers in front of you – exactly as Mitsubishi and Kobelco designed them.

Page 1 of this 310-page document identifies the core engine – the Mitsubishi 6D14.15 – and lists the four machine models this catalog supports. K904C, K907B, K907C, and YS750-2. Each model gets its own column in the parts list. No guessing.

Cylinder Block Group – Exploded Views and Part Numbers

The cylinder block section (group 020-110A) shows every component from the block casting down to the freeze plugs. You get the key number, part name, description, part code, and quantity for each model. The table uses column headers so you can cross-reference the exact part you need. Page 3 lists engine serial number ranges so you know if your engine falls within the 1982-1983 production window. That matters because Mitsubishi updated the cylinder block design during that period. If you order a block without checking the serial, you’re gambling.

Crankshaft Bearing Group – Specs You Can Trust

Crankshaft bearing identification is where aftermarket catalogs fail. This catalog gives you the OEM part number for each main bearing set and rod bearing for the crankshaft. The group 020-120A includes the bearing shells, thrust washers, and seals. Mitsubishi genuine parts are listed with their specific part code. I’ve watched techs install the wrong bearing shell because the aftermarket cross-reference said it fit. It didn’t. This manual eliminates that.

Oil Pan Gaskets and Fasteners – No More Leaks

The oil pan assembly (group 020-150A) includes the gasket, bolts, and drain plug. The parts list tells you the quantity of bolts per engine – not a generic kit count. If you’re rebuilding a 6D14 that uses a different oil pan than the 6D15, the catalog shows the difference. The exploded view makes it obvious. I’ve seen guys reuse old gaskets because they didn’t have the right part number. Don’t be that guy.

3 Reasons an OEM Parts Catalog Beats Aftermarket Databases

First, aftermarket databases reindex part numbers and lose the original group structure. This catalog keeps the Mitsubishi group index – you navigate by engine system, not by generic category. Second, OEM parts have an inspection standard that imitations don’t meet. Page 4 of this catalog explains that Mitsubishi genuine parts pass strict inspections. Third, the catalog includes production dates and modification history. If your engine serial is 6D15-257594 (YS750-2 cold spec), the catalog tells you exactly which parts apply. No aftermarket database gives you that level of accuracy.

If you need a catalog for a different Mitsubishi engine, check the Mitsubishi S3L2 2009 Parts Catalog – OEM Factory Specs for smaller displacement diesels. For the bigger S6A3-PTA, the Mitsubishi S6A3-PTA PTK 1991 Parts Catalog – Factory OEM Specs is available. The Mitsubishi 4DQ50 Parts Catalog – OEM Diesel Engine Specs covers another series. For background on automotive industry standards for parts catalogs, see Automotive Industry Overview on Wikipedia. If you’re dealing with battery issues, refer to Automotive Battery for general knowledge.

Who Needs This 310-Page Manual?

This manual is for anyone who needs to order Mitsubishi genuine parts for a K904C, K907B, K907C, or YS750-2 machine. It is a parts catalog, not a repair manual – you won’t find torque specs or service procedures. If you are a technician rebuilding a 6D14 or 6D15 engine, you need this to get the correct part numbers for the cylinder block, crankshaft, bearings, gaskets, and seals. Shop owners should have it on hand so their techs stop making costly part-ordering mistakes. Beginners can use the exploded diagrams to learn how the engine is assembled and which parts go where.

FAQ

Does this catalog include exploded views for the entire engine?

Yes, it covers all major engine groups from cylinder block to oil pan.

Can I use this catalog to identify parts for a 6D15 engine that was modified in 1983?

Yes. Page 3 includes a table showing engine serial numbers and production dates. For example, the YS750-2 with cold spec (6D150YJ12N) has serial number range 6D15-257594~(83/9). The catalog covers modifications between September 1982 and April 1983. If your engine serial falls within those ranges, the part numbers listed are correct. For later modifications, you would need a later revision of the catalog.

If you want to stop chasing wrong parts and start using the same numbers the factory uses, access the factory manual. It’s the only source for Mitsubishi genuine part numbers.