Description

Yamaha TDR250 2001 Parts Catalog – OEM Factory Part Numbers & Diagrams

I’ve watched guys pull their hair out because they ordered a “compatible” head gasket for a TDR250 and it didn’t match the cooling passages. Then they blame the bike. That’s not the bike’s fault – that’s ordering from a parts catalog that wasn’t printed by Yamaha. This Yamaha TDR250 2001 Parts Catalog is the exact microfiche used by dealerships in 2001. 46 pages of nothing but OEM part numbers, exploded diagrams, and reference codes. If you need to rebuild a top end, replace a crank, or find that odd oil seal, this is the document that keeps you from wasting money on the wrong part.

Cylinder Head and Valve Train Parts (Block 1)

The first block in this catalog covers the cylinder head, valves, and associated hardware. Page 1 shows the head assembly with reference numbers like 2YK-11111-01-00 for the cylinder head itself, and 2YK-11131-01-00 for the head (both listed – double-check your VIN). You get the exact part numbers for valve stem seals (1KT-1131-00-00), valve keepers, and the elusive 4Y1-11445-00-00 seal ring. The diagram lays out which bolt gets which washer – no guessing which 90179-06025-00 screw goes where. For a motor that revs like the TDR250, using the wrong valve spring retainer can lunch a piston. This catalog eliminates that risk.

Crankshaft, Pistons, and Connecting Rods (Block 2)

Block 2 is where you find the rotating assembly. The crank group part number is 2YK-11400-00-00. Inside that group you’ll see separate listings for the left and right crank halves (4Y1-11431-00-00 and 2YK-11441-00-00) plus the connecting rod 2WK-11571-00-00. This catalog also lists oversize pistons: from 0.25mm to 1.5mm oversize (2YK-11542-00-00 through 2YK-11546-00-00). If you’re boring the cylinder, you need those exact numbers to order the right slugs. The piston pin circlips (93310-33005-00) and wrist pin bearing are shown too. No aftermarket catalog gives you this granular breakdown without some cross-reference headache.

Why You Need OEM Part Numbers for the TDR250

The 2YK chassis code parts are not the same as earlier TDR models. I’ve seen guys order parts for a 1990 TDR250 and wonder why they don’t fit a 2001. The crank seals, water pump gasket, and even the cylinder studs changed. This 2001 parts catalog gives you the factory-correct reference. When you walk into a Yamaha dealer or order online, you give them a 2YK-xxxxx-xx-xx number – that’s the only language the system speaks. The alternative? You measure 20 times, guess, and still end up with a box of wrong parts. For the cost of a few bolts, this catalog pays for itself on the first order. If you’re also working on other Yamaha models, check out the Yamaha YZF-R1 2002 Parts Catalog – OEM Factory Part Numbers – same factory source, different bike.

Audience Who Should Buy This Catalog

This is for anyone who owns a 2001 Yamaha TDR250 and needs to order parts. DIY mechanics restoring a barn find, home garage enthusiasts tracking down that missing oil seal, or a shop that sees these bikes come through. If you’re a beginner, the exploded diagrams show you exactly how parts relate – you don’t need to be a master tech to read microfiche. But if you’re a pro, you know the value of having the exact part number in your hand before you call the parts counter. The 46 pages cover everything from the kickstarter to the carburetors (though the OCR excerpt only shows the first two blocks, the full catalog includes all major assemblies). For context on why internal combustion engines need precise component matching, see the Internal Combustion Engine overview.

Source Authenticity: Yamaha Factory 2001 Microfiche

This is a direct scan of the Yamaha Motor Distribution B.V. official parts catalog. No third-party compilation, no aftermarket renumbering. The watermark “Copyright © 2001 Yamaha Motor Distribution B.V.” appears on every page. If you’ve ever used a generic parts list and ended up with a mismatched bolt, you know the difference. The OEM catalog lists every hardware item individually – dowel pins, circlips, washers, and seals – with the exact finish and dimension. That matters when a 10mm bolt might be a 90179-06049-00 or a 90179-08025-00 depending on location. Aftermarket catalogs lump hardware into “assorted” bins. This doesn’t. For broader insights into the automotive industry’s reliance on standardised documentation, check out Automotive Industry Overview. Also, if you’re into other two-stroke twins, the Yamaha GTS1000AE 1993 Parts Catalog – Factory Microfiche PDF and Yamaha V125 Parts Catalog – OEM Factory Part Numbers & Diagrams follow the same factory format.

Frequently Asked Questions

Does this catalog include torque specifications?

No. This is a parts catalog, not a service manual. It lists part numbers and diagrams – not torque values or assembly procedures. You need the Yamaha service manual for that.

Can I use this to rebuild the engine completely?

You can use it to order every single bolt, gasket, seal, piston, and bearing. Then you’ll need a service manual for clearances, torque sequences, and timing. The two go together – but you cannot rebuild an engine from a parts catalog alone.

What years does this cover?

Specifically the 2001 model year. Yamaha changed part numbers for earlier and later TDR250 variants. The 2YK-C333 (1) and 2SK-C333 (1) block codes match 2001 production. Older models use different prefixes.

How many pages and what format?

46 pages. Digital access – you get the exact PDF scan of the original microfiche. Viewable on any device. No watermarks, no reprints, just the factory file.

Stop guessing part numbers and ordering from catalogs that don’t match your bike. This Yamaha TDR250 2001 Parts Catalog gives you the exact factory data you need to get the right parts the first time. Access the Factory Manual now and start your rebuild with confidence that every bolt you buy is the one Yamaha intended.