Description

Perkins 404C-22 2006 Parts Catalog

You’ve got a Perkins 404C-22 on the stand, and you need a gasket set, a fuel injector line, or maybe a connecting rod. You pull up some aftermarket parts list and cross your fingers. That’s how you end up with the wrong piston ring set and a weekend wasted. I’ve seen it happen. The difference between a job that goes right and one that turns into a scavenger hunt is having the OEM Perkins 404C-22 2006 Parts Catalog in your hand. This is the same book Perkins dealers used in 2006 — 132 pages of factory part numbers, exploded views, and index listings. No reprints, no scanned-thrice PDFs. Original print.

Engine Breakdown: Identifying the Major Sections

Page 5 lays out the entire engine in sections with corresponding page numbers. You want the cylinder head assembly? That’s section B6AH, starting page 21. Crankshaft and bearings? Section A6AH, page 15. This isn’t a generic diagram — it’s the exact breakdown for the 404C-22. The symbol descriptions on page 9 tell you what each icon means: arrows for direction, circles for fasteners, etc. If you skip that page, you’ll misinterpret the illustrations. Don’t skip it.

Parts Lists & Illustrations: How to Use the Visual Index

Starting on page 11, each major component group gets its own page with an exploded isometric view and a matching table of part numbers, quantities, and descriptions. The illustrations are representational only — the manual says that explicitly on page 4 — so don’t try to measure threads from the picture. Use the part number. If you need the fuel injection pump for the D6AH variant, that’s page 45. The same pump for the D6MH variant is page 51. Two different pumps. Two different pages. The catalog keeps them separate so you order the right one.

Symbol Descriptions: Decoding the Icons

Perkins uses standard symbols across all their parts catalogs. A circle with a dot means “use threadlocker.” A triangle means “apply grease.” Page 9 lists every symbol with its meaning. If you ignore this section, you’ll miss a note about pre-lubricating a bearing before assembly. That’s the kind of oversight that leads to a seized engine 50 hours later. I’ve torn down engines where the previous tech skipped the symbol guide — dry bearings, wrong sealant. Don’t be that guy.

Parts Index: Finding Part Numbers Fast

The index runs from page 124 to 132 — a straight alphabetical and numerical list of every part number and description that appears in the catalog. Need a “Gasket, Cylinder Head”? Look it up in the index, get the page number, flip there, confirm the illustration. This saves you from flipping through the whole book every time. Pair this catalog with the Perkins 400 Series 403C 404C Workshop Manual for torque specs and assembly procedures. The parts catalog gives you the numbers; the workshop manual gives you the installation steps. Use both.

Why a 2006 OEM Parts Catalog Beats Third-Party Lists

Aftermarket parts databases frequently combine variants into one line. The 404C-22 had multiple build lists — the front page of this catalog lists your specific build number and the publication date. Third-party lists don’t carry that. They’ll show one part number for a “fuel injector” when the factory actually used two different atomiser designs depending on the engine code. Pages 49 and 55 show the difference. If you order by the wrong list, you get the wrong injector. Then you’re paying return shipping and waiting another week. OEM documentation keeps your downtime predictable.

FAQ

Does this parts catalog include torque specs?

No. This is a parts catalog, not a service manual. Torque values belong in the workshop manual. Look for the Perkins 403C-15 404C-22 2003 Workshop Manual – Factory Specs for that data.

Can I use this catalog to overhaul the engine?

You can use it to identify every part you need — gaskets, seals, bearings, pistons, rings, cylinder head components. But fitting instructions require the service manual. The catalog says so on page 4: “For fitting instructions please refer to your engine Service Manual.” So don’t skip that step.

Is this the same catalog a Perkins dealer would have used?

Yes. This is the official 2006 publication from Perkins Engines Limited. The information was correct at the time of printing. Always verify superseded part numbers with your local Perkins outlet — the manual says that too. But as a baseline, this is exactly what dealers referenced.

How do I find a specific part number quickly?

Three ways: the engine breakdown on page 5 shows which section covers your component. The parts list illustrations start on page 11. And the parts index on page 124 cross-references every part number and description to the page where it appears. Pick the method that fits how your brain works.

If you’re rebuilding a Perkins 404C-22, you need the right numbers. Aftermarket cross-references are guesses. This OEM catalog is the actual factory list. Access the Factory Manual and keep it on your workbench — next to your torque wrench and your service manual. You’ll use it every time.

Related manuals: Perkins 404C-22 400 2004 Service Manual – OEM Factory Specs covers the earlier model year with some spec differences. And for background on diesel engine fundamentals, refer to this Wikipedia article on diesel engines. For a deeper dive into diesel engine operation, see this Wikipedia article on diesel engines.