Automatic Tri Axle 6x4 Dump Trucks For Sale

(844) 241-___ SHOW
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36 0

2026 Western Star 47X Tri Axle Dump Truck - Cumminsx12 455HP, Automatic

Newly Listed

$235,995 USD

*2026 2026 Western Star 47X -- CumminsX12 Diesel -- Allison Automatic** Cummins ISB 6.7L Diesel -- 455 HP / 660 lb-ft torque* Allison 4500 RDS Automatic Transmission* 70-Gallon Fuel Tank* 20...

Condition	New
Usage	6 Miles
Horse Power	455 HP
Engine Model	CumminsX12
Drivetrain	6x4
Transmission	6 Speed Automatic
Rear Axle	Tri Axle
Rear End	46,000 lb
Stock Number	TLWG5456
MLS Number	13980425
Category	Dump Trucks
Last Updated	11/13/2025
Location	Pompano Beach, FL, US
Sold By	Go Freightliner of Broward

(844) 241-___ SHOW
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36 0

2026 Western Star 47X Dump Truck - Cumminsx12 455HP, Automatic

Newly Listed

$235,995 USD

*2026 2026 Western Star 47X -- CumminsX12 Diesel -- Allison Automatic** Cummins ISB 6.7L Diesel -- 455 HP / 660 lb-ft torque* Allison 4500 RDS Automatic Transmission* 70-Gallon Fuel Tank* 20...

Condition	New
Usage	6 Miles
Horse Power	455 HP
Engine Model	CumminsX12
Drivetrain	6x4
Transmission	6 Speed Automatic
Rear Axle	Tri Axle
Rear End	46,000 lb
Stock Number	TDWG5446
MLS Number	13977679
Category	Dump Trucks
Last Updated	11/13/2025
Location	Pompano Beach, FL, US
Sold By	Go Freightliner of Broward

(844) 481-___ SHOW
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35 1

2020 Mack Granite 64FR Tri Axle Dump Truck - MP8 445HP, 12 Speed M Drive Automatic, 16' Dump

$110,000 USD

2020 MACK GR64FR TRI-AXLE DUMPTRUCK, MP8 MOTOR 445 HP, MDRIVE AUTO TRANSMISSION, OX BODIES BED, 18,740LBS FRONT AXLES, 20K INT LIFT AXLE, 44K REAR AXLES, ELECTRIC TARP, DOUBLE FRAME, 16 FT...

Condition	Used
Usage	230,795 Miles
Duty Class	Heavy Duty Dump Truck
Upfit Make	Ox Bodies
Bed Length	16 ft.
Horse Power	445 HP
Engine Model	Mack MP8
Drivetrain	6x4
Transmission	12 Speed mDRIVE Automatic
Suspension	Camelback
Rear Axle	Tri Axle
Rear End	64,000 lb
MLS Number	13965730
Category	Dump Trucks
Last Updated	11/6/2025
Location	Jackson, TN, US
Sold By	Snider Equipment

(480) 995-___ SHOW
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5 0

2018 Freightliner Cascadia 126 Dump Truck - Detroit 450HP, 12 Speed Dt12 Automatic, 18' Dump

Price Drop

$109,000 USD

Brand New Dump Truck Conversion, New Dump Bed and Entire System, Aluminum Wheels will be added, One Owner Fleet Maintained Truck, Contact Ed Gibbs for more information,

Condition	Used
Usage	384,000 Miles
Duty Class	Heavy Duty Dump Truck
Bed Length	18 ft.
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tri Axle
Rear End	52,000 lb
Stock Number	18352
MLS Number	13690365
Category	Dump Trucks
Last Updated	11/13/2025
Location	Phoenix, AZ, US
Sold By	TCI Transportation

(609) 318-___ SHOW
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11 0

2023 Kenworth T880 Tri Axle Dump Truck - Cummins 500HP, 6 Speed Allison Rds Automatic, 17.5' Dump

$199,900 USD

Heritage Steel body paired with an Allison Transmission and Cummins Power!, Perfect truck to add to any fleet, Truck has been fully gone over and is ready to work !,

Quantity	5
Condition	Used
Usage	3,620 Hours
Duty Class	Heavy Duty Dump Truck
Upfit Make	HERITAGE
Bed Length	17.5
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	Neway
Rear Axle	Tri Axle
Rear End	46,000 lb 4.30 ratio
Stock Number	275460
MLS Number	13071880
Category	Dump Trucks
Last Updated	10/31/2025
Location	Millstone Township, NJ, US
Sold By	Hunter Truck

(833) 490-___ SHOW
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10 0

2020 Mack Granite 64FR Dump Truck, DOT Passing , Used Truck Inspected , Zero Down Financing WAC, Warranty Options

$169,995 USD

For sale is a 2020 Mack GR64F Tandem Axle dump truck, powered by a robust MP7 Engine with 425 Horsepower. This truck features an mDrive Transmission for smooth operation and a durable...

Condition	Used
Usage	155,276 Miles
Duty Class	Heavy Duty Dump Truck
Bed Length	16 ft.
Horse Power	425 HP
Engine Model	Mack MP7
Drivetrain	6x4
Transmission	12 Speed mDRIVE Automatic
Suspension	Camelback
Rear Axle	Tri Axle
Rear End	44,000 lb 3.79 ratio
Stock Number	U010702
MLS Number	13845654
Category	Dump Trucks
Last Updated	11/4/2025
Location	Springfield, MO, US
Sold By	Tri State Truck Center - Springfield, MO

(844) 445-___ SHOW
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Tri State Truck Center - Springfield, MO

45 0

2011 Peterbilt 386 Tri-Axle Dump Truck, Elliptical Dump Body, Tarping System, Highlift Tailgate, Butt Plate.

$79,950 USD

*JUST ARRIVED! This a 2011 Peterbilt 386 Tri-Axle with Cummins ISX 12L, 425 HP, Automatic 10-Speed Eaton-Fuller Trans w/ New Clutch, Jake Break, Diff Lock, Double Frame, PTO, Controls to bed...

Condition	Used
Usage	946,631 Miles
Duty Class	Heavy Duty Dump Truck
Upfit Type	Dump Body
Bed Length	18 ft.
Horse Power	425 HP
Engine Model	Cummins ISX
Drivetrain	6x4
Transmission	10 Speed Ultrashift Plus Automatic
Suspension	Air Leaf
Rear Axle	Tri Axle
Rear End	5.43 ratio
Stock Number	118828
MLS Number	13799753
Category	Dump Trucks
Last Updated	10/9/2025
Location	Midvale, UT, US
Sold By	MTS Utah, Inc.

(717) 384-___ SHOW
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15 0

2025 Peterbilt 567 Tri Axle Dump Truck - Cummins 525HP, 6 Speed Allison Rds Automatic

Contact for price

2025 PETERBILT 567 TRI-AXLE STEEL DUMP ***CUMMINS X15****ALLISON 4500 RDS-P****18' STEEL BIBEAU HIGH LIFT GATE*** 20K STEERABLE PUSHER,

Condition	New
Usage	1,569 Miles
Duty Class	Heavy Duty Dump Truck
Upfit Make	Bibeau
Horse Power	525 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	Hendrickson HMX460
Rear Axle	Tri Axle
Rear End	46,000 lb 4.56 ratio
Stock Number	269814
MLS Number	13822926
Category	Dump Trucks
Last Updated	9/19/2025
Location	Lancaster, PA, US
Sold By	Hunter Truck

(480) 995-___ SHOW
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3 0

2018 Freightliner Cascadia 125 Dump Truck - Detroit 450HP, Automatic

$135,000 USD

BRAND NEW DUMP CONVERSION, New Dump Box and Complete System, Contact Ed Gibbs for more information,

Condition	Used
Usage	189,000 Miles
Duty Class	Heavy Duty Dump Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tri Axle
Rear End	40,000 lb
MLS Number	13635737
Category	Dump Trucks
Last Updated	11/13/2025
Location	Phoenix, AZ, US
Sold By	TCI Transportation

(866) 751-___ SHOW
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16 0

2020 Kenworth T880 Tri Axle Dump Truck - Paccar 455HP, 6 Speed Allison Rds Automatic, 16' Dump

$162,500 USD

VERY CLEAN!!! 180 DAY/50K ENGINE WARRANTY!! READY TO WORK!!! CALL NOW FOR MORE INFORMATION

Condition	Used
Usage	243,169 Miles
Duty Class	Heavy Duty Dump Truck
Upfit Make	Beau-Roc
Bed Length	16 ft.
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	Chalmers
Rear Axle	Tri Axle
Rear End	46,000 lb 4.10 ratio
Stock Number	110921
MLS Number	13752908
Category	Dump Trucks
Last Updated	8/21/2025
Location	Louisville, KY, US
Sold By	Boyd Truck Centers

(844) 949-___ SHOW
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13 0

2019 Mack Granite 64BR Automatic Tri-Axle Dump Truck - Only 69k miles!

$174,950 USD

2019 Mack Granite 64BR Automatic Tri-Axle Dump Truck.Odometer reads 69,029 miles. Mack MP8 diesel engine. 445 HP. Mack automatic transmission. Camelback suspension. Rogers heavy spec AR...

Warranty

Condition	Used
Usage	69,029 Miles
Duty Class	Heavy Duty Dump Truck
Horse Power	445 HP
Engine Model	Mack MP8
Drivetrain	6x4
Transmission	mDRIVE Automatic
Suspension	Camelback
Rear Axle	Tri Axle
Rear End	44,000 lb
Stock Number	40
MLS Number	13588631
Category	Dump Trucks
Last Updated	5/18/2025
Location	Lexington, KY, US
Sold By	Equipment Dudes LLC

(844) 949-___ SHOW
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9 0

2020 Peterbilt 348 6x4 Tri-Axle Automatic Dump Truck

$137,500 USD

2020 Peterbilt 348 6x4 Tri-Axle Automatic Dump Truck.Approximately 183,000 miles. Paccar PX-9 six-cylinder 8.9L diesel engine. 450 hp. Allison 3500 RDS automatic transmission. 6x4 drive type...

Condition	Used
Usage	183,000 Miles
Duty Class	Heavy Duty Dump Truck
Bed Length	16 ft.
Horse Power	450 HP
Engine Model	Paccar PX-9
Drivetrain	6x4
Transmission	Allison RDS Automatic
Rear Axle	Tri Axle
Rear End	46,000 lb
MLS Number	13205076
Category	Dump Trucks
Last Updated	5/1/2025
Location	Indianapolis, IN, US
Sold By	Equipment Dudes LLC

(855) 586-___ SHOW
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11 0

2012 Kenworth T800 Tri Axle Dump Truck - Paccar 405HP, Manual

$134,999 USD

2012 KENWORTH T800 DUMP TRUCK, - 318,778 MILES, - PACCAR MX-13 ENGINE, - 405 HP, - EATON ULTRASHIFT TRANSMISSION, - NEW CLUTCH, - NEW BRAKES AND DRUMS ON DRIVE WHEELS, - NEW EGR COOLER, -...

Condition	Used
Usage	318,778 Miles
Duty Class	Heavy Duty Dump Truck
Upfit Make	Rogers
Horse Power	405 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	Ultrashift Automatic
Rear Axle	Tri Axle
Stock Number	1NKDXPTX9CJ332501
MLS Number	11944087
Category	Dump Trucks
Last Updated	5/15/2025
Location	Athens, TN, US
Sold By	Gateline Equipment

(855) 586-___ SHOW
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13 0

2024 Mack Granite 64FR Tri Axle Dump Truck - MP8, Automatic

$294,999 USD

2024 MACK GRANITE 64FR TRI AXLE DUMP TRUCK, -331 MILES, - MACK MP8 ENGINE, -TRI AXLE, -DURACLASS BED,

Condition	Used
Duty Class	Heavy Duty Dump Truck
Engine Model	Mack MP8
Drivetrain	6x4
Transmission	Automatic
Rear Axle	Tri Axle
MLS Number	11976485
Category	Dump Trucks
Last Updated	5/15/2025
Location	Athens, TN, US
Sold By	Gateline Equipment

(855) 586-___ SHOW
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17 0

2013 Kenworth T800 Tri Axle Dump Truck - Cummins 400HP, Automatic

$117,999 USD

2013 KENWORTH T800 TRI AXLE DUMP TRUCK, - 321,773 MILES, - CUMMINS ISX ENGINE, - 400 HP, - EATON AUTOMATIC TRANSMISSION, - TRI AXLE, - DURACLASS END DUMP BED,

Condition	Used
Usage	321,773 Miles
Duty Class	Heavy Duty Dump Truck
Upfit Make	DuraClass
Horse Power	400 HP
Engine Model	Cummins ISX
Drivetrain	6x4
Transmission	Automatic
Rear Axle	Tri Axle
Stock Number	1NKDX4EX0DJ368123
MLS Number	11895644
Category	Dump Trucks
Last Updated	5/15/2025
Location	Athens, TN, US
Sold By	Gateline Equipment