Onan 226, 446, 448 Parts Catalog – 59 Page OEM Exploded View Index

Description

If you’ve ever ordered a part for a Onan 226, 446, or 448 compact tractor and got the wrong thing because the aftermarket catalog listed a superseded number or a different year, you know the frustration. This 59-page Parts Catalog is the factory print – not a recompiled third-party mess. It gives you the exact OEM part numbers and exploded views that match your tractor’s build. No guesswork, no returns. You pull the page, find your part on the grid, and order the right piece the first time.

What This 59-Page Parts Catalog Actually Contains

You get the complete alphabetical index upfront. Need a Camshaft? Page 5-1-1, grid A8-A14. Need the Crankshaft group? Same page range. The catalog covers the Engine section from air filter to starter motor, then the Basic Tractor section covering axles, brakes, electrical, hydraulic system, transmission, and more. Page numbers use grid coordinates like B6-B12 so you can locate the exact part in the illustration. This is not a generic parts list – it’s the actual factory reference used by dealers.

Engine Section: Camshaft, Crankshaft, and Piston Group

Inside the engine section (pages 5-11), you’ll find the piston and connecting rods, flywheel, and the complete camshaft and crankshaft assemblies. Part numbers are listed with the original Onan prefixes, so if you need a replacment camshaft for a 226, you can cross-check it against the 446 or 448 variants. The exploded diagrams show every bolt, washer, and seal. No third-party redraw – this is the factory artwork. For the Electrical system, pages 67-77 give you the starter motor, battery, and wiring harness parts. That alone saves you hours of digging through online forums.

Why You Need the Factory Parts Catalog

Aftermarket parts catalogs often combine model years or skip page numbers. This one is specific to P.I.N. ranges: 226 from 14048500, 446 from 14041700, 448 from 14044240 and after. If you have a tractor that falls within those serial breaks, this catalog matches. Compare that to the generic listings on Amazon that ignore running changes. You get the original revision 8-2752, which replaces catalog 8-2751 – meaning it includes updates up to the 1990 production date (8-90-RP-500-445). That matters when you’re ordering a part that changed mid-year.

Hydraulic System and Electrical Coverage

Pages 49-61 cover the hydraulic system – pump, motor, reservoir, valve, and all hoses. Need a replacement pump drive coupling? Page 57, grid E4. The electrical section (pages 67-77) includes not just the starter but also the battery, instruments, and wiring. The grid system might look odd at first – letters for horizontal, numbers for vertical – but once you get used to it, you can find any part in under a minute. I keep a copy in my shop for the two 446s we service. Saves me from calling the dealer every time.

Related manuals you might need: Cummins Onan P216G-P220G 2010 Parts Catalog – OEM Specs and Cummins Onan RBAB 6kW-15kW 2013 Operators Manual | OEM Factory Specs for generator sets. If you’re working on the older P-series engines, grab Onan P216 P218 P220 P224 1995 Service Manual – Factory Specs.

3 Questions Mechanics Ask About This Catalog

1. Can I use this to rebuild the engine? No. This is a parts catalog – it gives part numbers and exploded views, not torque specs or assembly procedures. For that you need the service manual. But if you already have the service manual, this catalog is the missing piece for ordering.

2. What does the grid reference mean? Each page has an overlay grid – letters across the top (A, B, C…) and numbers down the side (1, 2, 3…). A reference like C8 means the part is in the C column, row 8. Look at the exploded diagram and find the intersection. That’s your part. Every part is keyed to the illustration. This system is standard in Onan factory docs – once you learn it, you’ll wish all catalogs used it.

Access the Factory Manual now and stop wasting time on wrong parts. Automotive Industry Overview For background on how OEM documentation affects repair quality, check [LINK_ID_EXT_1: Automotive Industry Overview.