Description

Dana Spicer T20000 2005 Parts Catalog – OEM Factory Specs

If you’re tearing down a Dana Spicer T20000 2005 Parts Catalog transmission and don’t have the factory parts list, you’re ordering blind. I’ve watched seasoned techs install the wrong flange or skip a bushing because they trusted a generic parts lookup. This 44-page OEM catalog gives you exploded views and exact part numbers – no guesswork. It’s not a service manual; it’s the parts bible for that T20000.

What’s Inside: Groups from the T20000 Parts Catalog

Open this catalog and you see groups like CONVERTER HOUSING (GRP-T20-1) and CASE & REAR COVER (GRP-T20-11). Each group lists every component with item numbers, part numbers, and quantities. Page 1 shows the assembly for BREAKER TECH, including flanges and gauges. Page 3 breaks down the converter housing group: part 4205088 ASSY-CONVERTER HOUSING AND PLUG, sleeves, plugs, gaskets, screws, lockwashers, and the air breather. You also get the N.S.S. (Not Sold Separately) and N.I. (Not Illustrated) codes so you don’t call your supplier about parts that don’t exist separately.

Why OEM Parts Catalog Beats Third-Party Lists

Third-party parts sites often re-number or cross-reference incorrectly. I’ve had a job stop because a “compatible” aftermarket part didn’t match the bolt pattern. This catalog comes straight from Dana Spicer – 2005 publication, no revisions of part numbers by external vendors. The part numbers here match what you’ll get from a Dana dealer. Aftermarket documentation? I don’t trust it on principle. Automotive Industry Overview shows that original equipment sources reduce warranty claims. That’s why I keep the factory catalog open on my bench.

Who Needs This 44-Page Catalog

If you run a shop that services heavy equipment – backhoes, dozers, breaker attachments – you need this. DIYers who maintain their own machinery avoid the headache of ordering wrong seals. The catalog covers the T20000 used in powershift transmissions. Even if you’re a beginner, the exploded diagrams let you identify what’s in your hand. Match the item number on the page to your transmission, order the part, and move on. No wasted hours chasing numbers. Pair this with DANA T20000 Powershift Transmission Maint. Manual for routine service and DANA T20000 Powershift Transmission Service Manual for overhauls.

Converter Housing Group: Factory Part Breakdown

Page 3 of the catalog (CONVERTER HOUSING group) is a good example. Item 1 is the converter housing assembly (4205088). Item 2 is sleeve 248612 – two required. Item 5 is the gasket (4205090) between converter housing and transmission case. You get the screw and lockwasher fasteners with exact part numbers. Notice the temperature pickup plug (11F8) and speed sensor port plug (4202489). These details matter when you’re reassembling a transmission that sees high torque. Without the right plug, you get leaks and pressure drops. Internal Combustion Engine fundamentals don’t apply here, but the same principle of correct sealing does.

3 Reasons to Use Factory Part Numbers

First, fitment. Aftermarket parts may be close but not identical – splines off by a millimeter cost you a transmission. Second, material. Dana Spicer specifies the grade of steel for flanges and the compound for O-rings. Third, traceability. If the part fails, the OEM number lets you file a claim. These catalogs are the only source for superseded numbers; Dana updates them via service bulletins, not by reprinting generic lists. For another Dana unit, check Dana Spicer ES42-5 1990 Parts Catalog – OEM Factory Specs.

Beware of Aftermarket Parts Lists

I’ve pulled up online “parts catalogs” that show a T20000 diagram but substitute a different bearing number. You install it, the shaft wobbles. This document is a scan of the original 2005 printing – no re-typeset, no auto-corrected part numbers. The OCR shows exact codes like “4205088 E” and “248612 C”. That’s what you need. Compare your transmission serial number to the model numbers on the front page (4262330, 4501189) to confirm coverage.

Frequently Asked Questions

Does this catalog include torque specs?

No. This is a parts catalog, not a service manual. You need the T20000 service manual for torque values and procedures.

Can I use this to order parts for a T20000 built before 2005?

This 2005 parts catalog covers the T20000 as built that year. Earlier units may use different part numbers for seals, gaskets, and internal components. Always verify the serial number and check Dana’s supersession bulletins. If you have an older unit, start with the maintenance manual to identify your revision level. The exploded views still help with general orientation, but order using the part numbers only after confirming compatibility with your transmission’s date code. Many shops keep multiple year catalogs to cross-reference changes – it saves the “wrong part” return trip.

When you need to pull a transmission, every hour spent on the wrong part is billable time you can’t recover. This catalog cuts that down to zero. Stop searching generic databases. Access the Factory Manual and get the exact Dana Spicer part numbers your T20000 needs.