SF, SB and EX references
This edition separates the three conventional layouts. It does not establish the whole 4900 production timeline.
Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF ↗
THE ARCHIVED HIGHWAY FILE
Western Star
4900 family
Separate the SF, SB and extended-hood EX layouts before comparing dimensions or powertrain options.
01 / FIND YOUR REFERENCE
Choose a reference edition
Start with the model configuration, then choose a publication and explore its documented equipment.
Catalogue reference
Selecting equipment records your research choice. It does not calculate dimensions, establish an available combination or rate a truck.
About this edition & its evidence
©2016 · WS/MC-B-538. The catalogue covers trucks and tractors. Its 448 in maximum wheelbase is not a tractor-specific range and is withheld from B. Off-road-only Series 60 Tier III equipment, XD and twin-steer TS configurations are excluded. Artwork depicts SF, not a scaled rendering of SB or EX.
Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF ↗
DIMENSION GUIDE / A–H
Precision visual reference
Select a measurement to highlight its endpoints and see what the chosen publication confirms.
Western Star 4900 · 4900 SF · set-forward axle · 2016 factory brochure · 2 published / 6 to verify
Published value Needs verificationSchematic · not to scale
A / SIDE VIEW
Bumper to back of cab (BBC)
Front bumper to the back of the driving cab. Excludes an additional sleeper; it is not overall tractor length.
123 in3,124 mm
Published for this reference; confirm the individual build.
Final-page cab drawing; sleeper excluded.
Original illustrative views; not to scale, a certified drawing or a selected-build rendering. Endpoints explain the measurements. Published values come from the cited reference, never from the image.
Selected reference: Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF. Published values remain tied to this edition.
View the complete dimension table ↓02 / THE MEASUREMENTS
Published dimensions
4900 SF · set-forward axle · 2016 factory brochure
| Measurement | Reference value | Scope / how to verify |
|---|---|---|
| Bumper to back of cab (BBC) | 123 in3,124 mm | Final-page cab drawing; sleeper excluded.Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF ↗ |
| Bumper to front axle (BA) | 33 in838 mm | Final-page bumper-to-steer-axle drawing.Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF ↗ |
6 dimensions still to verify · build record / measurement
| Measurement | Reference value | Scope / how to verify |
|---|---|---|
| Wheelbase | Not verified | Build record / measurement required. |
| Overall tractor length | Not verified | Build record / measurement required. |
| Overall height | Not verified | Build record / measurement required. |
| Cab / body exterior width | Not verified | Build record / measurement required. |
| Width across mirrors | Not verified | Build record / measurement required. |
| Fifth-wheel height | Not verified | Build record / measurement required. |
Planning to transport the truck?
Measure fixed exterior width and mirror width separately, plus overall length, the highest accessory, fifth-wheel height and actual transport weight. Interior bunk width is not exterior width.
03 / UNDER THE SKIN
Powertrain & chassis
Detroit DD13 · Detroit DD15 · Detroit DD16 · Cummins ISX15. Build-specific axle, suspension and wheelbase configuration. Read engine, gearbox and axle ratings together.
| Measurement | Reference value | Scope / how to verify |
|---|---|---|
| DD13 power options | 350–505 hp261–377 kW | 505 hp / 1,850 lb-ft is restricted to specific applications.Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF ↗ |
| DD13 torque options | 1,350–1,850 lb-ft1,830–2,508 N·m | Published in the selected manufacturer reference.Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF ↗ |
| DD15 power options | 400–505 hp298–377 kW | Published in the selected manufacturer reference.Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF ↗ |
| DD15 torque options | 1,550–1,750 lb-ft2,102–2,373 N·m | Published in the selected manufacturer reference.Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF ↗ |
| DD16 power options | 500–600 hp373–447 kW | Published in the selected manufacturer reference.Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF ↗ |
| DD16 torque options | 1,850–2,050 lb-ft2,508–2,779 N·m | Published in the selected manufacturer reference.Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF ↗ |
| ISX15 power options | 400–600 hp298–447 kW | Published in the selected manufacturer reference.Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF ↗ |
| ISX15 torque options | 1,450–2,050 lb-ft1,966–2,779 N·m | Published in the selected manufacturer reference.Western Star 4900 brochure · ©2016 · WS/MC-B-538 · dealer-hosted factory PDF ↗ |
Documented cab options
- Day cab
- 40 / 54 / 68 in Low Roof
- 34 / 40 / 54 / 68 / 82 in High Roof Stratosphere
- 82 in Ultra High Roof Stratosphere
- 40 / 54 / 68 in Ultra Low Roof
Documented transmissions
Read the installed unit’s identification plate and build record.
The catalogue covers trucks and tractors. Its 448 in maximum wheelbase is not a tractor-specific range and is withheld from B. Off-road-only Series 60 Tier III equipment, XD and twin-steer TS configurations are excluded. Artwork depicts SF, not a scaled rendering of SB or EX.
04 / MODELS, YEARS & CHANGES
One badge.
Different reference points.
Publication dates and launch milestones do not establish continuous model-year ranges. Match the VIN, production date and equipment era.
Inspection and build evidence
Identify the axle position and hood before using a BBC figure. Check cab corrosion, hood pivot wear, air-cleaner mounts, frame reinforcements and any vocational-to-tractor conversion.
- VIN-linked factory build record and production date
- Engine and transmission identification plates
- Axle ratings, tyre ratings and fifth-wheel installation
- Physical measurements of the individual tractor
05 / PUTTING IT TO WORK
Match the trailer to the whole truck.
Assess the complete tractor and trailer combination: axle and tyre ratings, coupling capacity, swing clearance and actual loaded dimensions. A model badge does not establish a towing allowance.
HIGHWAYTRAILERS.CA
Flatbed
Start with deck length, load placement, axle distribution and cab-to-trailer clearance.
Read the guide HIGHWAYTRAILERS.CAStep deck
Compare deck height, gooseneck geometry and the loaded combination’s height.
Read the guide HIGHWAYTRAILERS.CARGN / equipment hauling
Check neck compatibility, fifth-wheel loading, wet-kit requirements and the complete axle layout.
Read the guide HIGHWAYTRAILERS.CAHow trailer capacity works
Review the tractor, coupling, trailer, tyres and load as one combination.
Read the guidePulling a trailer
Confirm build-specific combination, axle, tyre and coupling ratings, kingpin and service connections, clearance and actual axle weights. GVW is the loaded truck; GCW is the loaded combination. Neither is trailer payload.
Moving the tractor as cargo
Give the carrier measured length, exterior and mirror widths, height, ground clearance and transport weight. Assess deck access, breakover, loaded height and securement together.
Deck height & loaded height ↗There is no single “4900 towing capacity”.
The model badge, artwork and catalogue option selectors cannot rate an individual combination. Obtain the actual build limits and scale weights.
06 / FOLLOW THE EVIDENCE
Sources & open questions
Reviewed September 7, 2026. Manufacturer figures remain tied to their stated reference; converted equivalents are rounded; original source units are retained. Application and inspection notes are editorial guidance.
Reference-specific evidence needed
- A tractor-specific wheelbase and transmission order guide is needed; the truck-and-tractor maximum is not assigned to every build.
- Exterior body and mirror widths, accessory height and ground-to-coupling height require build-specific measurements.
- Dated references are evidence points, not complete production-year ranges. Confirm the VIN and original order.
- Colours are illustration previews; a dated factory exterior paint palette has not been verified.