Used 6x4 Water Trucks For Sale in United States

(844) 841-___ SHOW
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2013 Caterpillar CT660S Water Truck 4000 gallons new steel tank!

Price Drop $54,500 USD

Water Truck Caterpillar 2013 CT660 Caterpillar C13 engine jake brake 18 speed manual transmission Eaton Fuller Includes a new drive shaft and yokes for the PTO, and a new water pump. It has...

Condition	Used
Duty Class	Heavy Duty Water Truck
Horse Power	450 HP
Engine Model	Caterpillar C13
Drivetrain	6x4
Transmission	18 Speed Manual
Rear Axle	Tandem Axle
Capacity	4000 Gallons
Compartments	3
MLS Number	14561472
Category	Water Trucks
Last Updated	8/26/2026
Location	Gadsden, AZ, US
Sold By	Iron Lot LLC

(928) 287-___ SHOW
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2017 International ProStar+ (Plus) Water Truck

$51,999 USD

https://www.wateronwheelsllc.com/

Condition	Used
Usage	293,691 Miles
Duty Class	Heavy Duty Water Truck
Engine Model	Cummins X15, Signature
Drivetrain	6x4
Transmission	10 Speed Manual
Rear Axle	Tandem Axle
Capacity	4000 Gallons
Compartments	2
MLS Number	13761469
Category	Water Trucks
Last Updated	8/15/2026
Location	San Luis, AZ, US
Sold By	Water on Wheels LLC

2006 Peterbilt 357 4000 Gallon Water Truck - Caterpillar 350HP, Automatic

Newly Listed

$45,000 USD

HEAVY DUTY TRUCK, RUNS EXCELLENT, NICE TANK, PTO/ PUMP, DIFFERENTIAL LOCK, AIR SEAT!,

Condition	Used
Usage	214,015 Miles
Duty Class	Heavy Duty Water Truck
Horse Power	350 HP
Engine Model	Caterpillar C9
Drivetrain	6x4
Transmission	Automatic
Suspension	HaulMaax
Rear Axle	Tandem Axle
Rear End	46,000 lb 4.56 ratio
Capacity	4000 Gallons
Stock Number	06PETE214TAWATER
MLS Number	14584154
Category	Water Trucks
Last Updated	9/3/2026
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(844) 956-___ SHOW
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2021 Peterbilt 367 4000 Gallon Water Truck - Paccar 370HP, 6 Speed Allison Rds Automatic

Newly Listed

Contact for price

DANA SPICER DSP41 REARS,

Condition	Used
Usage	1,740 Hours
Duty Class	Heavy Duty Water Truck
Horse Power	370 HP
Engine Model	Paccar PX9
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	Hendrickson
Rear Axle	Tandem Axle
Rear End	40,000 lb 5.57 ratio
Capacity	4000 Gallons
Stock Number	C5406
MLS Number	14583929
Category	Water Trucks
Last Updated	9/3/2026
Location	West Sacramento, CA, US
Sold By	DeWald Equipment

(833) 495-___ SHOW
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2020 International HV 4000 Gallon Water Truck - Cummins, Automatic

2009 Peterbilt 340 4000 Gallon Water Truck - Paccar 330HP, Automatic

2009 Sterling L9500 4000 Gallon Water Truck - Caterpillar 385HP

Newly Listed

$59,500 USD

2009 Sterling Cat C-13, 410 hp, 13 speed 3 yr old 4,000 gal water system, epoxy coated, hose reel, many upgrades … 59,500.00,

Condition	Used
Duty Class	Heavy Duty Water Truck
Horse Power	385 HP
Engine Model	Caterpillar C13
Drivetrain	6x4
Transmission	13 Speed
Rear Axle	Tandem Axle
Capacity	4000 Gallons
MLS Number	14578386
Category	Water Trucks
Last Updated	9/1/2026
Location	Chandler, AZ, US
Sold By	Maverick Equipment LLC

(855) 653-___ SHOW
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2016 Peterbilt 367 4000 Gallon Water Truck - Cummins 500HP, 13 Speed Automatic

2022 Freightliner M2 106 4000 Gallon Water Truck - Detroit 350HP, 6 Speed Allison Rds Automatic

Price Drop $129,500 USD

2022 Freightliner M2-106 Tandem Axle 4,000 Gallon Water Truck, 7.7L Detroit Diesel DD8 Engine, 350 HP, Engine Brake, Allison 3000 RDS 6 Speed Automatic Transmission, ONLY 7,534 ECM Verified...

Condition	Used
Usage	7,534 Miles
Duty Class	Heavy Duty Water Truck
Upfit Make	Ledwell
Horse Power	350 HP
Engine Model	Detroit DD8
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 5.29 ratio
Capacity	4000 Gallons
Stock Number	T17844D
MLS Number	14356598
Category	Water Trucks
Last Updated	8/28/2026
Location	Denver, CO, US
Sold By	DTI Trucks

2005 Kenworth T800 4000 Gallon Water Truck - Cummins 330HP, 10 Speed Manual

$35,000 USD

GOOD TRUCK, RUNS EXCELLENT, AIR SEAT, AIR BRAKES, DIFFERENTIAL LOCK, DUMP VALVE, NICE TANK, PTO/ PUMP, FRONT/ SIDE/ REAR SPRAYERS!,

Condition	Used
Usage	97,399 Miles
Duty Class	Heavy Duty Water Truck
Horse Power	330 HP
Engine Model	Cummins ISM
Drivetrain	6x4
Transmission	10 Speed Manual
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.11 ratio
Capacity	4000 Gallons
Stock Number	05T897TAWATER
MLS Number	14563188
Category	Water Trucks
Last Updated	8/29/2026
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(844) 445-___ SHOW
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2007 Volvo VHD, NEW Tank, VE D12 12.13L, Eaton 10 Spd, NEW 4,000 Gal, Sprayers, 132K Low Miles!

$78,500 USD

***** Exceptional values available until Monday Labor Day, 2026. ***** Pricing is subject to modification. Dealer Doc Fee: $ 290, Sales tax and licensing fees are applicable within the...

Quantity	2
Condition	Used
Usage	15,796 Hours
Duty Class	Heavy Duty Water Truck
Horse Power	365 HP
Engine Model	Volvo VE D12
Drivetrain	6x4
Transmission	10 Speed Manual
Suspension	Camelback
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.90 ratio
Capacity	4000 Gallons
Compartments	3
Stock Number	486685
MLS Number	14309187
Category	Water Trucks
Last Updated	8/31/2026
Location	Midvale, UT, US
Sold By	MTS Utah, Inc.

(844) 982-___ SHOW
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: 2020 FREIGHTLINER M2-106 4,000-GALLON WATER TRUCK – FRONT, REAR & SIDE SPRAYERS – CUMMINS ISL – ALLISON AUTOMATIC – ONLY 13K MILES

$94,995 USD

FOR SALE: 2020 FREIGHTLINER M2-106 4,000-GALLON WATER TRUCK – FRONT, REAR SIDE SPRAYERS – CUMMINS ISL – ALLISON AUTOMATIC – ONLY 13K MILES, Offered for sale is a 2020 Freightliner...

Condition	Used
Usage	13,382 Miles
Duty Class	Heavy Duty Water Truck
Upfit Type	Water Tank Body
Upfit Make	Curry Supply
Upfit Model	4,000 gallons
Horse Power	300 HP
Engine Model	Cummins ISL
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	TufTrac
Rear Axle	Tandem Axle
Rear End	40,000 lb
Capacity	4000 Gallons
Compartments	1
Stock Number	LR4295
MLS Number	14533661
Category	Water Trucks
Last Updated	8/15/2026
Location	Miami, FL, US
Sold By	Truck and Van Outlet

(855) 653-___ SHOW
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2021 Freightliner M2 106 4000 Gallon Water Truck - Detroit 350HP, 6 Speed Allison Rds Automatic

$134,500 USD

2021 Freightliner M2-106 Tandem Axle 4,000 Gallon Water Truck, 7.7L Detroit Diesel DD8 Engine, 350 HP, Allison 6 Speed Automatic Transmission, 6,857 ECM Verified Miles 2,232 ECM Verified...

Condition	Used
Usage	2,232 Hours
Duty Class	Heavy Duty Water Truck
Upfit Make	Curry Supply
Horse Power	350 HP
Engine Model	Detroit DD8
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	TufTrac
Rear Axle	Tandem Axle
Rear End	40,000 lb 5.86 ratio
Capacity	4000 Gallons
Stock Number	T18367D
MLS Number	14490721
Category	Water Trucks
Last Updated	7/28/2026
Location	Denver, CO, US
Sold By	DTI Trucks

1998 Mack CH613 4000 Gallon Water Truck - E7 350HP, 9 Speed Manual

$16,000 USD

GOOD TRUCK, RUNS EXCELLENT, PTO/ PUMP, GOOD TIRES, SIDE AND REAR SPAYERS!,

Condition	Used
Usage	295,744 Miles
Duty Class	Heavy Duty Water Truck
Horse Power	350 HP
Engine Model	Mack E7
Drivetrain	6x4
Transmission	9 Speed Manual
Suspension	Camelback
Rear Axle	Tandem Axle
Rear End	44,000 lb
Capacity	4000 Gallons
Stock Number	98CH295WATER
MLS Number	14499152
Category	Water Trucks
Last Updated	7/22/2026
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(855) 980-___ SHOW
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1982 International S2500 2000 Gallon Water Truck - Cummins, 8 Speed Manual

$26,000 USD

162576 Miles, Engine: CUMMINS, Fuel Type: Diesel, 8 Speed Manual Transmission, Drive: 6x4, Spring Suspension, Wheels: All Steel, Tandem Rear Axles, Composition: Steel

Condition	Used
Usage	162,576 Miles
Duty Class	Heavy Duty Water Truck
Drivetrain	6x4
Transmission	8 Speed Manual
Suspension	Spring
Rear Axle	Tandem Axle
Capacity	2000 Gallons
Stock Number	A19058-INT
MLS Number	14422218
Category	Water Trucks
Last Updated	7/22/2026
Location	OGDEN, UT, US
Sold By	Rocky Mountain Truck Parts

(833) 495-___ SHOW
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2009 Sterling L9500 4000 Gallon Water Truck - Caterpillar, 13 Speed Manual

Contact for price

2009 Sterling C13 CAT, 13 Speed, 3 yr old water system, epoxy coated, runs great, work ready! Call,

Condition	Used
Duty Class	Heavy Duty Water Truck
Engine Model	Caterpillar C13
Drivetrain	6x4
Transmission	13 Speed Manual
Rear Axle	Tandem Axle
Capacity	4000 Gallons
MLS Number	14481523
Category	Water Trucks
Last Updated	7/14/2026
Location	Chandler, AZ, US
Sold By	Maverick Equipment LLC

1998 Volvo WG64T 4000 Gallon Water Truck - Caterpillar 300HP, 9 Speed Manual

$14,000 USD

GOOD TRUCK, RUNS EXCELLENT, PTO/ 3 INCH PUMP, AIR SEAT, AIR BRAKES!,

Condition	Used
Duty Class	Heavy Duty Water Truck
Horse Power	300 HP
Engine Model	Caterpillar 3306C
Drivetrain	6x4
Transmission	9 Speed Manual
Suspension	Walking Beam
Rear Axle	Single Axle
Rear End	4,000 lb 3.90 ratio
Capacity	4000 Gallons
Stock Number	98VOLV118WATER
MLS Number	14478950
Category	Water Trucks
Last Updated	7/11/2026
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

2008 Freightliner M2 106 3500 Gallon Water Truck - Cummins 280HP, Automatic

$35,000 USD

GOOD TRUCK, RUNS GREAT, PTO/ PUMP, GRAVITY BAR, DIFFERENTIAL LOCK, DUMP VALVE!,

Condition	Used
Usage	246,620 Miles
Duty Class	Heavy Duty Water Truck
Horse Power	280 HP
Drivetrain	6x4
Transmission	Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	46,000 lb
Capacity	3500 Gallons
Stock Number	08M2246TAWATER
MLS Number	14439976
Category	Water Trucks
Last Updated	6/19/2026
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

1995 Mack RD690S 3600 Gallon Water Truck - E7 350HP, Manual

$24,000 USD

GOOD TRUCK, RUNS EXCELLENT, AIR SEAT, PTO, AIR CONTROLS, DIFFERENTIAL LOCK, REAR HITCH!,

Condition	Used
Usage	493,421 Miles
Duty Class	Heavy Duty Water Truck
Horse Power	350 HP
Engine Model	Mack E7
Drivetrain	6x4
Transmission	Manual
Suspension	Camelback
Rear Axle	Tandem Axle
Rear End	44,000 lb
Capacity	3600 Gallons
Stock Number	95RD493WATER
MLS Number	14284251
Category	Water Trucks
Last Updated	4/3/2026
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(855) 725-___ SHOW
NUMBERCall Seller

2023 Freightliner M2 112 4000 Gallon Water Truck - Detroit 450HP, 6+1 Speed Allison Rds Automatic

$129,999 USD

Brand new tank and system, On a low mile 2023 Freightliner truck, Contact: ED Gibbs for details,

Condition	Used
Usage	90,000 Miles
Duty Class	Heavy Duty Water Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	6+1 Speed Allison RDS Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.90 ratio
Capacity	4000 Gallons
MLS Number	14273185
Category	Water Trucks
Last Updated	3/28/2026
Location	Phoenix, AZ, US
Sold By	TCI Transportation

(844) 716-___ SHOW
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2006 International Paystar 5600 4000 Gallon Water Truck - Cummins 370HP, 5 Speed Allison Rds Automatic

Contact for price

HARD TO FIND 6 X 6 Water truck! , 2006 International 5600i 6 x 6 chassis #5255; Vin # 1HTXGAHT96J255413, , Cummins ISM- 385; 370 horsepower turbo diesel with Jake brake, , Allison 4500_RDS_P...

Condition	Used
Usage	8,562 Hours
Duty Class	Heavy Duty Water Truck
Horse Power	370 HP
Engine Model	Cummins ISM385V
Drivetrain	6x4
Transmission	5 Speed Allison RDS Automatic
Suspension	Walking Beam
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.88 ratio
Capacity	4000 Gallons
Stock Number	5255A
MLS Number	13446868
Category	Water Trucks
Last Updated	3/12/2026
Location	Pacific, WA, US
Sold By	Puget Sound Truck Sales, Inc.

(844) 716-___ SHOW
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2006 International Paystar 5600 4000 Gallon Water Truck - Cummins 370HP, 5 Speed Allison Rds Automatic

Contact for price

HARD TO FIND 6 X 6 Water truck! , 2006 International 5600i 6 x 6 chassis #5255; Vin # 1HTXGAHT96J255413, , Cummins ISM- 385; 370 horsepower turbo diesel with Jake brake, , Allison 4500_RDS_P...

Condition	Used
Usage	8,562 Hours
Duty Class	Heavy Duty Water Truck
Horse Power	370 HP
Engine Model	Cummins ISM385V
Drivetrain	6x4
Transmission	5 Speed Allison RDS Automatic
Suspension	Walking Beam
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.88 ratio
Capacity	4000 Gallons
Stock Number	5255
MLS Number	13300607
Category	Water Trucks
Last Updated	3/12/2026
Location	Pacific, WA, US
Sold By	Puget Sound Truck Sales, Inc.

(833) 495-___ SHOW
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2021 Peterbilt 567 4000 Gallon Water Truck - Paccar 430HP, 12 Speed Automatic

Contact for price

MX11 @430HP @1600/1650 FT LBS, 12 Speed Automatic, Flex Air Spring Suspension / 52" Spacing, 13,200 LB Front Axle, 40,000 LB Rears, 3.36 Ratio, 240" WB, Air Disc Brakes, Air Conditioning,...

Condition	Used
Usage	211,607 Miles
Duty Class	Heavy Duty Water Truck
Horse Power	430 HP
Engine Model	Paccar MX-11
Drivetrain	6x4
Transmission	12 Speed Automatic
Suspension	Flex Air
Rear Axle	Tandem Axle
Rear End	40,000 lb
Capacity	4000 Gallons
MLS Number	14085952
Category	Water Trucks
Last Updated	1/13/2026
Location	Chandler, AZ, US
Sold By	Maverick Equipment LLC

2002 Freightliner FL80 4000 Gallon Water Truck - Caterpillar 250HP, Automatic

$34,000 USD

GOOD TRUCK, RUNS EXCELLENT, AIR BRAKES, NICE AGM TANK, DIFFERENTIAL LOCK, PTO/PUMP, SIDE/ REAR SPRAYERS, HOSE REEL!,

Condition	Used
Usage	152,357 Miles
Duty Class	Heavy Duty Water Truck
Upfit Make	AGM
Horse Power	250 HP
Engine Model	Caterpillar C7
Drivetrain	6x4
Transmission	Automatic
Suspension	Walking Beam
Rear Axle	Tandem Axle
Rear End	40,000 lb 5.22 ratio
Capacity	4000 Gallons
Stock Number	02FL80152TAWATER
MLS Number	14042805
Category	Water Trucks
Last Updated	12/14/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales