Description

Mitsubishi S6B-PT, S6B-PTA Parts Catalog – OEM Factory Specs for Diesel Engine Service

If you are maintaining a Mitsubishi S6B-PT or S6B-PTA diesel engine from a DENYO generator set, you’ve probably wasted money on imitation parts or wrong part numbers from aftermarket lists. This isn’t a service manual – it’s a Mitsubishi S6B-PT, S6B-PTA Parts Catalog – 180 pages of factory-sourced part numbers, group illustrations, and serial number application data. That’s what you need to identify each component and order genuine replacements without guesswork.

180 Pages of OEM Part Numbers for the S6B-PT and S6B-PTA

This catalog is built for two engine variants: the standard S6B-PT and the aftercooled S6B-PTA. On page 4, the catalog explains that it covers engines from serial number 27217 and up. Each group – like the crankcase assembly (group 07-01) – shows reference numbers, Mitsubishi part numbers, and quantity per engine. The same data used by authorized dealers. You won’t find repair procedures or torque specs here, but you will find every bolt, gasket, and seal listed exactly as Mitsubishi intended.

How to Read the Parts Catalog: Groups, Reference Numbers, and Serial Numbers

Page 5 shows a sample illustration with group names, part numbers, descriptions, and applicable serial number ranges. Supply code symbols tell you if a part is high-demand or superseded. The catalog includes a part number index at the back (C1 section) and a cross-reference for combination replacements (E1 section). Take the time to learn the layout – I’ve seen too many guys order a whole crankcase when they only needed a dowel pin. Don’t be that guy.

What Serial Numbers Apply to This Catalog?

This catalog is for engine serial numbers 27217 and above (27217 UP). If your engine is older, you need a different publication (Pub. No. 98670-15910 from July 1991). The front matter on page 2 (A1) also emphasizes using only Mitsubishi genuine parts – a warning that comes from expensive field failures with imitation parts.

Ordering Parts the Right Way

When you order, have the part number, quantity, and engine serial number ready. Each part in the catalog has a reference number tied to an illustration – never order by reference number alone. If you see a “G” symbol, that means a combination replacement is available; check the E1 section at the end. And always specify “MITSUBISHI GENUINE PARTS” when you call your dealer. The catalog even includes a bolt/washer cross-reference table (D1 section) for common hardware.

Avoiding Counterfeit Parts: Mitsubishi’s Warning

The catalog includes a full bilingual page warning about imitation parts: they are made from inferior materials and manufacturing methods. For a diesel engine that runs hot under load, fake parts can lead to catastrophic failure. This catalog lists the real deal – every genuine part number direct from the factory. For other Mitsubishi engine families, check the Mitsubishi S3L2 2009 Parts Catalog – OEM Factory Specs”>Mitsubishi S3L2 2009 Parts Catalog – OEM Factory Specs, the Mitsubishi S6A3-PTA PTK 1991 Parts Catalog – Factory OEM Specs”>Mitsubishi S6A3-PTA PTK 1991 Parts Catalog – Factory OEM Specs, or the Mitsubishi 4DQ50 Parts Catalog – OEM Diesel Engine Specs”>Mitsubishi 4DQ50 Parts Catalog – OEM Diesel Engine Specs. For broader industry context, see Automotive Industry Overview”>Automotive Industry Overview and Automotive Battery”>Automotive Battery.

Frequently Asked Questions

Is this catalog a service manual with repair procedures?

No. This is strictly a parts catalog – part numbers, illustrations, and ordering information. You need a separate service manual for repair steps.

Can I use this catalog to find torque specs?

No torque values are listed here. This catalog is for part identification only. Torque specs belong in the engine service manual, not the parts book. I still recommend keeping both on your bench.

Does this catalog cover the S6B-PT engine for applications other than DENYO generators?

This specific catalog was published for DENYO CO., LTD. (generator sets). However, the part numbers for the base engine – cylinder head, pistons, bearings, gaskets – are the same Mitsubishi genuine parts used in other S6B-PT applications. If you have a different application (marine, industrial), cross-check the part numbers against your engine serial number. The catalog also lists the engine model as “PT” for portable (DCA220) and “PTA” for portable (DCA300), so verify your equipment matches.

How do I find the part number for the cylinder head?

Look in group 07-01 (Crankcase Assembly) or group 07-02 (Cylinder Head) – the exact group name will be in the table of contents. Use the part number index at the back (C1) if you know the description.

If you’re serious about keeping your Mitsubishi S6B-PT or S6B-PTA running on genuine parts, this catalog is the reference you need. Stop wasting time on aftermarket look-alikes. Access the Factory Manual now and get the actual part numbers you can trust.