New Klein Model K400 with New 2021 Kenworth T370 6×4 Chassis

The Klein model K400 Trap tank is a 4,000-gallon water truck tank system designed for on and off highway use in operating conditions of general construction and excavation where water for compaction and dust control is essential. The innovative Klein TRAP tank system makes this work truck the ultimate for job site and operator safety.

The Klein K400 tank system on this super strong Kenworth T370 chassis platform makes this work truck package the leading choice for any construction, quarry, landfill or other operator working in general construction, excavation, dust control or compaction application. Equipped with innovative Klein-branded water pump and water discharge equipment, this reliable work water truck provides extraordinary performance and safe functionality.

The truck chassis features HD front and rear axles, HD frame and suspension, and plenty of content that makes this truck built the RIGHT way for the application.

This truck is available NOW for custom K400 tank equipment specification and upfit.

Call now. Let your knowledgeable Klein rep explain all the details on this great heavy duty water truck package.


  • Availability: 2021 model available soon.
  • Last Updated: June 21, 2021
Chassis Make: Kenworth
Chassis Model: T370 6×4
Model Year: 2021, New, Unused
Status: New
Tank: Klein
Model: K400
Capacity: 4,000 US Gallons, Approx.
Klein S/N: TBD, Several Available

Summary of Main Chassis Specification

Engine: Paccar PX-9 300
Transmission: Allison 3500 RDS 6-Speed
GVWR: 64,000 lbs
Front Axle: 20,000 lbs Meritor
Front Suspension: 20,000 lbs Tapered Leaf Spring with Shocks
Rear Axle: 44,000 lbs Meritor
Rear Suspension: Hendrickson HAULMAAX HMX 460, 46,000 lb Capacity
Brakes: Full Air. Drum Style
Frame: 10 5/8″ with Full Inner Liner
Fuel Tank: 75 Gallon, Aluminum
Tires, Front: 385/65r22.5 18 ply. 2 each.
Wheels, Front: Alcoa Aluminum. 2 each.
Tires, Rear: 11r22.5 14 ply. 8 each.
Wheels, Rear: Accuride Painted Steel
Exterior Color: White. Dupont Imron.


Value Added Options/Features

  • Battery switch
  • Remote throttle/PTO options
  • Air horn under hood
  • Heavy duty steel front bumper upgrade
  • Removable tow hooks
  • Corner windows on cab
  • Electric window lifts
  • AM/FM/WB/USB/Bluetooth/Kenworth radio
  • Stainless steel visor


  • Detailed chassis specification available upon request
  • Weight Study/CG calculations available upon request
  • Chassis gradeability reports & shift split charts available upon request

 main tank equipment features

Tank: Klein, Trap Design
Model: K400
Capacity: 4,000 approx. U.S. Gallons (Approx.)


discharge package

Water Pump: Klein KP3FL
Pump Drive System: PTO drive from transmission mounted PTO
Rear Spray: Two (2) right/left Klein combination sprayhead fan discharges
Side Spray: One (1) driver side. Passenger side spray available as option.
Front Spray: Two (2) right/left Klein combination sprayhead fan discharges
Control Module: Standard Klein manual air actuated control panel
Suction Loading: Available as option.
Gravity: Available as option.
Hose Reel: Available as option.
Pressure Outlet Group: Yes. One 1.5″ with valve and one 3/4″ bib
Turret Monitor: Available as option.


tank equipment

Subframe: Subframe pan. Contains payload.
Baffles: PFC Precision Flow Control Load Stabilization System
Head/Baffle Design: Flanged Tank Bulkheads
Fenders: Tank integrated. Flanged, welded. Mudflaps
Fender Undercoating: Available as option.
Fill Line: Yes. 2.5″ Rear mounted
Fill Line Options: Standard. Options available.
Mounting Hardware: All flex mount in front, Rigid in rear.
Manhole: 30″
Manhole Options: Trash screen
Sight Glass: Available as option.
Low Water Drain Package: Available as option.
Kleinview Rear Camera: Available as option.
Work Lights: Available as option.
Rotating Lights: Available as option.
Liquid Level Indicator, Electronic: Available as option.

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