Dana Spicer DS344, DS404, DS405, DS454, DS404-P 2005 Parts Catalog

You’ve got a Dana Spicer tandem axle on the lift and the part numbers on the old bracket don’t match anything in the aftermarket listings you’ve been using. That’s because aftermarket catalogs copy from copies and leave out the supersession history. This Dana Spicer DS344, DS404, DS405, DS454, DS404-P 2005 Parts Catalog is the actual OEM publication – 44 pages of factory-sourced part numbers, cross-references, and the sort of detail you need when ordering seals, gears, or air lockout parts. I’ve seen guys order a carrier assembly based on a third-party list and end up with the wrong ratio because the manual they used didn’t have the model breakouts. This one does.

Single Reduction Axles – What This Catalog Covers

The manual opens with the model list (page 2) and then drops straight into General Information, including the “How To Use Illustrated Parts List” section. That part sounds basic, but if you’ve ever tried to decode a Dana part number without the index, you know it’s a waste of time. Pages 5–10 cover Single Reduction Forward Axles with exploded views and callouts. The Wheel Differential Lock Assembly section (page 11) lists the components for the diff lock models – something you’ll need if you’re working on a truck that sees off-road duty. Also included: Piston Cover Upgrade Kits (page 13) for the air shift system. That’s a common retrofit when the old plastic covers crack.

Model Identification – Why It Matters

Page 4 shows the Model Identification table. If you don’t know whether your axle is a DS404 or a DS454, you’re guessing. The differences matter: bearing spacers, sensor mounts, and yoke sizes vary. This catalog gives you the tag location and the codes to read. I’ve had a tech bring me a DS404-P that he thought was a standard DS404 – the -P suffix changes the wheel differential lock components. The catalog makes that clear. After you’ve identified the model, jump to the “Wiring Harness Usage by OEM” table on page 13. That section tells you which wire harness and air line routing applies to each OEM chassis. It’s a detail most aftermarket catalogs skip because they’re generic. This one isn’t.

Air Lockout Parts – Before and After 11/2/98

Dana changed the air lockout design on that date. If you order parts for a post-11/2/98 axle using the pre-11/2/98 diagram, you’ll get shift forks that won’t engage. Pages 14 and 16 give separate part numbers for each production run. The “In Axle Speed Sensor” section (page 22) also splits into before and after that date. Those sensors are expensive – ordering the wrong one because you ignored the date split costs real money. The manual also includes the “In Axle Speed Sensory for ABS” page (page 30), which covers the ABS tone ring and sensor mounting. That’s not in the generic aftermarket book.

Quick Part Number Replacement Listing – When You Need a Cross Reference Fast

Starting on page 41, there’s a Quick Part Number Replacement Listing. If you have an old part number that’s been superseded, this table tells you the new number. For example, the old yoke PN might map to a different flange design. I’ve used that page more times than I care to count, especially when a customer walks in with a scrap of paper that has a 1990s number. The “Supersession of D/R454 Models to New Generation Models” (page 36) handles model-level changes – important if you’re retrofitting an older axle with newer carrier assemblies. Also on page 40: Oil Seal Installation Tools. The manual lists the driver kit part number – don’t guess the bearing bore size.

This catalog covers the DS344, DS404, DS405, DS454, and DS404-P. It’s a parts catalog, not a service manual – don’t expect torque specs or rebuild procedures. But for ordering the right gear, pinion, axle shaft, or air shift component, it’s the only reference you should trust. The 44 pages are packed with factory illustrations and the same data the dealer uses. If you’re working on a tandem drive system from a freightliner, international, or peterbilt that uses any of these axles, this PDF saves you the phone call to the parts counter.

Related Manuals

• Dana Spicer ES42-5 1990 Parts Catalog – OEM Factory Specs
• Dana Spicer T20000 2005 Parts Catalog – OEM Factory Specs
• Dana Spicer T210 CM55 1991 Parts Catalog – OEM Factory Specs

For background on how these axles fit into heavy-duty drivetrain systems, see the Automotive Industry Overview and the Internal Combustion Engine articles for context on engine-to-axle integration.

Does this catalog include torque specs for axle assembly?

No. This is a parts catalog – it lists part numbers, not assembly torques. You need the service manual for torque values and procedures.

How do I find the correct part for a DS404-P axle with a wheel differential lock?

Start on page 2 to confirm your model, then go to the Wheel Differential Lock Assembly section (page 11). The -P suffix is identified in the Model Identification table on page 4. The Piston Cover Upgrade Kits on page 13 also apply to that model. If the axle was built after 11/2/98, use the air lockout parts from page 14; if before, page 16. The catalog splits by production date because Dana changed the shift mechanism internal design – using the wrong page will get you parts that don’t fit. For the speed sensor, refer to the In Axle Speed Sensor sections on pages 22 (before and after 11/2/98) and the ABS sensory page 30. If you need an axle shaft, check pages 29-30 – there are separate listings for single reduction, diff lock, and IASS-equipped models. The Quick Part Number Replacement Listing on page 41 will help if you have an old number that has been superseded. That listing covers all models in this catalog.

If you’re tired of ordering the wrong yoke or chasing supersessions through three web sites, get the real thing. Download the Factory Manual from AutoRepairManuals – the PDF is the same 44-page document Dana put out in 2005. No missing pages, no photocopied blur.