New Klein Model K400 with New 2023 Western Star 47X

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 Western Star 47X 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.

This complete 4,000 gallon water truck package with all the bells and whistles is dirt ready and available NOW!

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


  • Availability: Available NOW!
  • Last Updated: August 22, 2023
Chassis Make: Western Star
Chassis Model: 47X 6×4
Model Year: 2023, New, Unused
Status: New
Tank: Klein
Model: K400
Capacity: 4,000 US Gallons, Approx.
Klein S/N: 44286-C
FOB: California

Summary of Main Chassis Specification

Engine: Detroit DD13 Gen 5 12.8L 450 HP
Transmission: Allison 4500 RDS
GVWR: 66,000 lbs
Front Axle: 20,000 lbs
Front Suspension: 20,000 lbs Taperleaf
Rear Axle: 46,000 lbs
Rear Suspension: Hendrickson PRIMAAX EX, 46,000 lb Capacity
Brakes: Full Air. Disc Style
Frame: 12.24″ Steel
Fuel Tank: 100 Gallon, Aluminum
Tires, Front: 425/65R22.5
Wheels, Front: Alcoa Polished Aluminum
Tires, Rear: 11R22.5
Wheels, Rear: Alcoa Polished Aluminum
Exterior Color: Dark Concord Blue


Value Added Options/Features

  • Removable front tow/recovery device
  • Remote keyless entry
  • AM/FM/WB/ world tuner radio w/ BT, USB & Aux inputs
  • Digital alarm clock in driver display
  • 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 KP3H
Pump Drive System: Klein SmartSpray System
Rear Spray: Three (3) Klein combination sprayhead fan discharges
Side Spray: Two (2) driver & passenger side w/ remote control elevation on both sides
Front Spray: Two (2) right/left Klein combination sprayhead fan discharges
Control Module: Standard Klein manual air actuated control panel
Suction Loading: Yes. Suction loading package including optional doors to enclose (2) storage tubes
Gravity: Yes. Custom 4″ gravity discharge w/ valve & male cam connector
Hose Reel: Yes. 50′ x 1.5″ electric rewind hose reel
Pressure Outlet Group: Yes. One 1.5″ with valve and one 3/4″ bib
Turret Monitor: Yes. Klein K-Electric turret monitor


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: N/A
Fill Line: Yes. 2.5″ Rear mounted
Fill Line Options: Standard.
Mounting Hardware: All flex mount in front, Rigid in rear.
Manhole: 30″
Manhole Options: Trash screen
Sight Glass: Front & Rear
Low Water Drain Package: Included
Kleinview Rear Camera: Included
Work Lights: Three (3) pair, Six (6) total LED work lights. 2 rear of tank, 2 each side of tank, 3 switches.
Rotating Lights: Two (2) amber rotating lights with brush guard. Front and rear.
Liquid Level Indicator, Electronic: N/A
Misc Equipment Included: Pintle hitch with manual lock.

    Request Quote

    Request a quote

    If you have any questions, call us at 909-460-4546
    or send us an email at