A distinct long-hood platform
The introduction reference establishes a 131.5 in BBC and day-cab or sleeper choices. W900 dimensions do not describe this platform.
Kenworth W990 introduction · September 2018 ↗
THE TRACTOR REFERENCE DESK
Kenworth
W990 family
A current premium long-hood conventional that complements rather than automatically succeeds every W900 application.
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
Kenworth W990 introduction · September 2018. Launch configuration reference; current order availability is not inferred from the 2018 announcement.
DIMENSION GUIDE / A–H
Precision visual reference
Select a measurement to highlight its endpoints and see what the chosen publication confirms.
Kenworth W990 · W990 · Kenworth W990 introduction · September 2018 · 1 published / 7 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.
131.5 in3,340 mm
Published for this reference; confirm the individual build.
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: Kenworth W990 introduction · September 2018. Published values remain tied to this edition.
View the complete dimension table ↓02 / THE MEASUREMENTS
Published dimensions
W990 · Kenworth W990 introduction · September 2018
| Measurement | Reference value | Scope / how to verify |
|---|---|---|
| Bumper to back of cab (BBC) | 131.5 in3,340 mm | Published in the selected manufacturer reference.Kenworth W990 introduction · September 2018 ↗ |
7 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. |
| Bumper to front axle (BA) | 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
Confirm dated engine option and rating. Long-hood conventional. Read engine, gearbox and axle ratings together.
Numerical powertrain ratings need a dated configuration-specific source. Current MX-13 and transmission availability must be read from the individual order. Any alternative-engine claim needs model-year evidence.
Documented cab options
- Day cab
- 40 in sleeper
- 52 in sleeper
- 76 in sleeper
Documented transmissions
Read the installed unit’s identification plate and build record.
Launch configuration reference; current order availability is not inferred from the 2018 announcement.
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.
Accommodation adds its own length
The launch lists 40, 52 and 76 in sleepers. Their nominal size does not calculate wheelbase or total length.
Kenworth W990 introduction · September 2018 ↗Inspection and build evidence
Assess long-wheelbase manoeuvrability, winter cab systems, corrosion, service access and the cost of repairing model-specific trim after collision damage.
- factory build sheet
- engine and transmission identities
- axle ratio and ratings
- sleeper/trim package
- records for custom electrical or frame work
05 / PUTTING IT TO WORK
Match the trailer to the whole truck.
Sleeper, day-cab, wheelbase and heavy-spec choices change payload, turning, fuel capacity and trailer clearance.
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 “W990 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
- Add later dated equipment editions and a tractor-specific dimensional drawing.
- Obtain build-specific overall length, exterior and mirror widths, overall height, fifth-wheel height and actual weights.