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John Deere 243, 244, 343, 344, 443 1994 Parts Catalog – Mike Callahan’s Take

If you’re chasing a part number for a John Deere 243, 244, 343, 344, 443 corn head from the 1969–1993 era, you’ve already learned that aftermarket cross-reference lists are a gamble. One wrong digit and you’re waiting a week for a part that doesn’t fit. That’s why you need the real thing: the 1994 factory Parts Catalog, 131 pages of OEM grid-indexed drawings and callouts. I’ve spent more than 28 years turning wrenches, and I’ve seen what happens when a guy orders a gathering chain based on a generic parts list. It costs time and money. This manual stops that nonsense before it starts.

John Deere 243, 244, 343, 344, 443 Parts Catalog: What’s Inside

You get five major grid sections – A, B, C, D, E – plus an L section for later revisions. Each grid has exploded-view illustrations with key numbers that link directly to the part list. The Alphabetical Index at the back lets you look up components like “Auger Floor and Shield” and immediately get the grid reference (e.g., C08). On page 2, the manual shows you how to decode the serial number plate so you order the right revision for your 344 or 443. Page 3 explains box-enclosed illustrations and bolt strength identification – SAE Grade 8 and HS 10.9 are clearly marked. You don’t guess; you read the spec.

Decode the Serial Number First

Before you order a single part, find the serial number plate on the right-hand side of your corn head. The manual gives examples: for heads up to serial 567200, the plate format is E0444567200H. For heads from 567201 onward, it’s H00444X567201. That letter code tells you the model suffix and factory. Mixing up a pre-567200 auger drive with a later revision means threads that don’t match. The Parts Catalog calls out these breaks explicitly. You won’t find that level of detail in a third-party reprint.

3 Ways the Alphabetical Index Saves Time

First, it groups components by function – auger floors, shields, drives, slowdown sprockets – not by random drawing numbers. Second, each entry lists the specific models it applies to, so you can see at a glance whether the part covers your 243 or your 443. Third, the index references grid pages, not page numbers. Once you have the grid (like “A12”), you flip to that section and see the exploded view with all callouts. No flipping back and forth between index and parts list. The 131-page format is lean because every page is gridded for speed.

Auger Sections: Where the 243 and 344 Differ

Look under “AUGER, CROSS” in the index. The 243 and 244 share one setup; the 344 and 443 share another. The catalog separates them by serial break and by model. If you need the cross auger drive for a 344 built after 1979, the grid D section will have the correct key numbers. Meanwhile, the 243’s auger floor and shield group shows up under a different grid reference. Without the OEM catalog, you’d be relying on a parts counter guy with a screen full of generic images. That’s how you end up with a 643 drive sprocket on a 243 frame.

OEM vs Aftermarket Parts Catalogs: Why Originals Matter

I’ve seen aftermarket parts catalogs that copy the exploded views but leave out the revision codes. The John Deere factory publication (copyright 2000, Deere & Company) includes the exact date-of-manufacture ranges for each model – 243 from 1969–1987, 443 from 1969–1993, etc. It also flags non-current parts with a box-enclosed illustration that has no key number. That means if the part is obsolete, you know it before you call the dealer. The SI units of measure and torque identification are factory-sourced. You won’t get that from a photocopy. If you’re rebuilding a diesel engine that powers one of these heads, you might want to check this Wikipedia article on diesel engines for background on the injection system. For more on engine fundamentals, this Wikipedia article on diesel engines.

Related Manuals You Might Need

• John Deere 2130 Parts Catalog – Factory Specs for Correct Part Identification
• John Deere 4500, 4600, 4700 2000 Parts Catalog – OEM Grid Index
• John Deere 9400, 9100, 9200, 9300 Parts Catalog – OEM Factory

Frequently Asked Questions

Does this catalog cover the 643 model?

No, this catalog covers models 243, 244, 343, 344, and 443 only.

How do I find a specific part like an auger floor?

Use the Alphabetical Index at the back. Look up the part name, then find the grid reference (e.g., A12). Then go to that grid page to see the illustration and part numbers. The index covers items like auger floors, shields, drive components. There are over 50 grid pages across sections A through L, each with exploded views and callouts. Page 2 also explains the serial number decoding, which helps you determine which revision your head is, so you order the correct part for your 344 or 443. Don’t skip the serial number step – I’ve seen guys order a 244 cross auger for a 443 and then blame the manual. It’s all in there if you read it.

Stop wasting time with jumbled parts lists. Get the original 1994 John Deere Parts Catalog for your 243, 244, 343, 344, and 443 corn heads. Every grid, every revision code, every bolt strength callout is factory-verified. Access the Factory Manual now and keep this PDF on your shop tablet. Your parts orders will start coming in right the first time.