Automatic 6x4 Trucks with Cummins Engines For Sale

2021 International LT Dump Truck - Cummins 450HP, 12 Speed Automatic, 13' Dump

$59,500 USD

CUMMINS X15 POWER WITH EATON FULLER AUTOMATIC!! CLEAN FLEET MAINTAINED ! AUTOMATIC! JAKES, LOCKERS, FLEET MAINTAINED, VIRGIN RUBBER! BRAND NEW 13'X56" DUMP BED, NEW PTO, TANK, TARP, 18 CU...

Condition	Used
Usage	427,219 Miles
Duty Class	Heavy Duty Dump Truck
Bed Length	13 ft.
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	7148
MLS Number	14023738
Category	Dump Trucks
Last Updated	12/26/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

(707) 849-___ SHOW
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2018 Kenworth T800 Tandem Axle Oil Field Truck - Cummins, 525HP, Automatic

$157,500 USD

2018 KW T800 Heavy Haul Winch Truck Excellent Condition ready for work Cummins X15 Engine, 525HP, 204k miles, 7k hours, Allison 4500RDS Transmission, Two Speed Rear Ends, 4.78 Rear Axle...

Condition	Used
Usage	7,690 Hours
Duty Class	Heavy Duty Oil Field Truck
Horse Power	525 HP
Engine Model	Cummins ISX15 525
Drivetrain	6x4
Transmission	Allison RDS Automatic
Rear Axle	Tandem Axle
Rear End	46,000 lb 4.78 ratio
MLS Number	13019155
Category	Oil Field Trucks
Last Updated	12/23/2025
Location	Santa Rosa, CA, US
Sold By	Personal Asset Brokerage

(833) 801-___ SHOW
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20 0

2015 Kenworth T440 Tandem Axle Cab & Chassis Truck - Cummins, 350HP, Automatic

Newly Listed

$40,000 USD

GOOD TRUCK, RUNS EXCELLENT, AIR SEAT, DOUBLE FRAME, FULL LOCKING REARS, FLOATS, LOW MILES!,

Condition	Used
Usage	219,940 Miles
Duty Class	Heavy Duty Cab & Chassis Truck
Horse Power	350 HP
Drivetrain	6x4
Transmission	Automatic
Suspension	Chalmers
Rear Axle	Tandem Axle
Rear End	46,000 lb 5.57 ratio
Stock Number	15T4219TACC
MLS Number	14063097
Category	Cab & Chassis Trucks
Last Updated	12/28/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(866) 579-___ SHOW
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30 4

2022 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 400HP, 12 Speed Endurant Automatic

Price Drop

$72,950 USD

Take a look at this low-mile 2022 Kenworth T680 equipped with a 76" raised roof double bunk sleeper featuring a refrigerator, work desk, TV mount, dual air-ride seats, and full storage...

Condition	Used
Usage	266,136 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	CO10789
MLS Number	13873816
Category	Sleeper Semi Trucks
Last Updated	12/28/2025
Location	Kansas City, MO, US
Sold By	Michelle Sells Trucks

(844) 624-___ SHOW
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30 4

2022 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 400HP, 12 Speed Endurant Automatic

Price Drop

$72,950 USD

Take a look at this low-mile 2022 Kenworth T680 equipped with a 76" raised roof double bunk sleeper featuring a refrigerator, work desk, TV mount, dual air-ride seats, and full storage...

Condition	Used
Usage	7,748 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	CO10789
MLS Number	13873815
Category	Sleeper Semi Trucks
Last Updated	12/28/2025
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

(833) 801-___ SHOW
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5 0

2014 Kenworth T440 Tandem Axle Cab & Chassis Truck - Cummins, 350HP, Automatic

Recently Updated

$40,000 USD

GOOD TRUCK, RUNS EXCELLENT, AIR SEAT, DOUBLE FRAME, FULL LOCKING REARS, FLOATS, LOW MILES!,

Condition	Used
Usage	96,769 Miles
Duty Class	Heavy Duty Cab & Chassis Truck
Horse Power	350 HP
Drivetrain	6x4
Transmission	Automatic
Suspension	Chalmers
Rear Axle	Tandem Axle
Rear End	46,000 lb 5.57 ratio
Stock Number	14T44096TACC
MLS Number	13848027
Category	Cab & Chassis Trucks
Last Updated	12/28/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(866) 695-___ SHOW
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17 0

2016 Peterbilt 579 Day Cab Truck - Cummins 450HP, Automatic

Newly Listed

Contact for price

526125 Miles, Engine: CUMMINS ISX, 450 HP, Fuel Type: Diesel, Automatic Transmission, Drive: 6x4, Air Ride Suspension, Tires: LP22.5, Wheels: All Aluminum, Tandem Rear Axles, Rear Axle...

Condition	Used
Usage	526,125 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Cummins ISX
Drivetrain	6x4
Transmission	Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	36,000 lb
Stock Number	MCOMAM344382
MLS Number	14062737
Category	Day Cab Semi Trucks
Last Updated	12/27/2025
Location	Dallas, TX, US
Sold By	MCO Truck and Equipment

(833) 801-___ SHOW
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22 0

2011 Peterbilt 320 Tandem Axle Garbage Truck - Cummins, 370HP, Automatic

Newly Listed

$25,000 USD

GOOD TRUCK, RUNS EXCELLENT, DIFFERENTIAL LOCK, NEW-WAY 40 YARD PACKER, DOUBLE FRAME, SOUTHERN TRUCK/ WELL MAINTAINED! !,

Condition	Used
Usage	27,421 Hours
Duty Class	Heavy Duty Garbage Truck
Horse Power	370 HP
Engine Model	Cummins ISM
Drivetrain	6x4
Transmission	Automatic
Suspension	HaulMaax
Rear Axle	Tandem Axle
Rear End	46,000 lb 5.57 ratio
Stock Number	11PETE80GAR
MLS Number	14062694
Category	Garbage Trucks
Last Updated	12/27/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(844) 985-___ SHOW
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33 0

2022 Peterbilt 389 Sleeper Semi Truck - 70" Raised Roof Sleeper, Cummins 450HP, Automatic

Recently Updated

$102,999 USD

Peterbilt 389 with a CUMMINS X15 450hp 70in Single Bunk Sleeper has a 13 Speed AUTOMATIC Transmission! Dual Exhaust Stacks; Air Slide 5th Wheel; Full DISC BRAKES; Lots of Chrome including...

Condition	Used
Usage	379,836 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.42 ratio
Stock Number	8680205
MLS Number	13988135
Category	Sleeper Semi Trucks
Last Updated	12/27/2025
Location	Bolingbrook, IL, US
Sold By	JX Truck Center

(855) 984-___ SHOW
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20 0

2026 Kenworth W900 Day Cab Truck - Cummins 565HP, 6 Speed Allison Rds Automatic

Recently Updated

$209,595 USD

Transfer this unit to your nearest Maryland/Delaware location at no additional cost! Baltimore, Bel Air, Dover, Landover, Mardela Springs, Upper Marlboro or Westminster. Contact us for...

Condition	New
Usage	71 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	565 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	AG 460
Rear Axle	Tandem Axle
Rear End	46,000 lb 4.30 ratio
Stock Number	KN223135
MLS Number	13884046
Category	Day Cab Semi Trucks
Last Updated	12/25/2025
Location	Landover, MD, US
Sold By	All Roads Trucks

(844) 988-___ SHOW
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16 0

2024 Autocar DC64 Cab & Chassis Truck

Recently Updated

$279,900 USD

Autocar DC64 Quint Axle Cab Chassis. Multiple Configurations Available, 20K Front Axle, 46K Rear Axles, Three 8K Lift Axles, 90K GVWR. Cummins Engine, 475 HP. AIR Ride Suspension. Allison...

Condition	New
Usage	1,100 Miles
Duty Class	Heavy Duty Cab & Chassis Truck
Horse Power	475 HP
Engine Model	Cummins X12
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	70,000 lb 4.30 ratio
MLS Number	12755679
Category	Cab & Chassis Trucks
Last Updated	12/25/2025
Location	Roseville, MN, US
Sold By	Universal Truck Sales

(855) 653-___ SHOW
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39 0

2020 International WorkStar 7400 4000 Gallon Water Truck - Cummins 350HP, 6 Speed Allison Rds Automatic

Newly Listed

Contact for price

2020 International 7400 Tandem Axle 4,000 Gallon Water Truck, Cummins L9 8.9L Turbo Diesel Engine, 350 HP, Exhaust Brake, Allison 6 Speed Automatic Transmission, ONLY 29,208 Miles, 3,729...

Condition	Used
Usage	3,729 Hours
Duty Class	Heavy Duty Water Truck
Upfit Make	Ledwell
Horse Power	350 HP
Engine Model	Cummins L9
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Capacity	4000 Gallons
Stock Number	T17846D
MLS Number	14059525
Category	Water Trucks
Last Updated	12/24/2025
Location	Denver, CO, US
Sold By	DTI Trucks

(888) 853-___ SHOW
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23 0

2014 Freightliner M2 106 Propane Truck - Cummins 350HP, 6 Speed Allison Rds Automatic

Newly Listed

$199,000 USD

2014 Freightliner M2 106, 350 hp ISL Cummins, Allison RDS Automatic transmission, air ride suspension, 5.29 rear end ratio, 14,700# steer axle, 40,000# rears, 252" wheel base, A/C, tilt and...

Condition	Used
Usage	264,113 Miles
Duty Class	Heavy Duty Propane Truck
Horse Power	350 HP
Engine Model	Cummins ISL
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 5.29 ratio
Stock Number	100
MLS Number	14059471
Category	Propane Trucks
Last Updated	12/24/2025
Location	New Salem, ND, US
Sold By	Pedigree Truck and Trailer Sales, Inc.

(833) 300-___ SHOW
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36 1

2022 Kenworth T680 Sleeper Semi Truck - 66" Mid Roof Sleeper, Cummins 500HP, Automatic

Newly Listed

Contact for price

522698 Miles, Engine: CUMMINS X15, 500 HP, Fuel Type: Diesel, Automatic Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Mid Roof Sleeper, Sleeper Size: 66, Wheels: All Aluminum,...

Condition	Used
Usage	522,698 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	66"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	C-37173
MLS Number	14059003
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Champlain, NY, US
Sold By	Gamache Truck Center

(844) 624-___ SHOW
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32 4

2023 International LoneStar Sleeper Semi Truck - 73" Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

Price Drop

$67,950 USD

AVAILABLE FOR SALE IN KANSAS CITY, MO. INSPECTED AND DETAILED. READY TO WORK!!!, *Remaining Warranty:, - Frame side rails - 7/1/2027, - Cab/Cowl Structure: 7/1/2027, - Cab/Cowl Perforation:...

Condition	Used
Usage	445,924 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	MO10949
MLS Number	13993269
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Kansas City, MO, US
Sold By	Michelle Sells Trucks

(844) 435-___ SHOW
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8 0

2019 International LT Day Cab Truck - Cummins 450HP, 10 Speed Automatic

Recently Updated

$34,900 USD

very clean low mile tandem day cab, ISX Power, Auto Shift,

Condition	Used
Usage	1 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Drivetrain	6x4
Transmission	10 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	277518
MLS Number	13364600
Category	Day Cab Semi Trucks
Last Updated	12/24/2025
Location	Liverpool, NY, US
Sold By	Allegiance Trucks

(855) 653-___ SHOW
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39 0

2013 Peterbilt 365 Dump Truck - Cummins 425HP, 6 Speed Allison Rds Automatic, 15' Dump

Recently Updated

$134,500 USD

2013 Peterbilt 365 Tandem Axle Dump Truck, Cummins ISX-12 11.9L Diesel Engine, 425 HP, 1650 Ft/Lb Torque, 3 Stage Engine Brake, Allison 6 Speed Automatic Transmission, ONLY 90,352 Miles ...

Condition	Used
Usage	2,591 Hours
Duty Class	Heavy Duty Dump Truck
Bed Length	15 ft.
Horse Power	425 HP
Engine Model	Cummins ISX12
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	HaulMaax
Rear Axle	Tandem Axle
Rear End	40,000 lb 5.57 ratio
Stock Number	T17816D
MLS Number	14042159
Category	Dump Trucks
Last Updated	12/23/2025
Location	Denver, CO, US
Sold By	DTI Trucks

39 0

2021 International LT Day Cab Truck - Cummins 450HP, 12 Speed Endurant Automatic

Price Drop

$34,500 USD

2021 International LT Day Cab. Cummins 450HP. Automatic Transmission 12 Speed Endurant Eaton. 2.79 Ratio. GVWR 52,350. All aluminum Wheels. New Virgin Bridgestone Rubber. We can remove...

Condition	Used
Usage	447,886 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	7150
MLS Number	14020573
Category	Day Cab Semi Trucks
Last Updated	12/23/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

35 0

2021 International LT Day Cab Truck - Cummins 450HP, 12 Speed Endurant Automatic

Price Drop

$37,500 USD

FLEET MAINTAINED INTERNATIONAL LT 625, CUMMINS X15, 450HP, 12 SPEED EATON ENDURANT TRANSMISSION, 2.79 RATIOS, NEW BRIDGESTONE VIRGIN RUBBER ALL THE WAY AROUND, READY TO WORK! JB HUNT...

Quantity	8
Condition	Used
Usage	375,545 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	7144
MLS Number	13988081
Category	Day Cab Semi Trucks
Last Updated	12/23/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

32 0

2021 International LT Day Cab Truck - Cummins 450HP, 12 Speed Endurant Automatic

Price Drop

$37,500 USD

FLEET MAINTAINED INTERNATIONAL LT 625, CUMMINS X15, 450HP, 12 SPEED EATON ENDURANT TRANSMISSION, 2.79 RATIOS, NEW BRIDGESTONE VIRGIN RUBBER ALL THE WAY AROUND, READY TO WORK! JB HUNT...

Quantity	8
Condition	Used
Usage	373,031 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	7147
MLS Number	13988027
Category	Day Cab Semi Trucks
Last Updated	12/23/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

64 0

2016 Kenworth T880 Dump Truck - Cummins 450HP, 10 Speed Smart Advantage Automatic

Recently Updated

$84,500 USD

FLEET MAINTAINED KENWORTH T880 DUMP TRUCK WITH NEW BED!! . CUMMINS 450HP! 10 SPEED EATON AUTOMATIC!! BRAND NEW 15.5'X52" DUMP BED, NEW PTO, TANK, TARP, 19 CU YARD CAPACITY. 3.55 REAR RATIO!...

Condition	Used
Usage	226,325 Miles
Duty Class	Heavy Duty Dump Truck
Bed Length	15.5
Horse Power	450 HP
Engine Model	Cummins ISX15
Drivetrain	6x4
Transmission	10 Speed Smart Advantage Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	7045
MLS Number	13985521
Category	Dump Trucks
Last Updated	12/23/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

42 0

2020 International LT Sleeper Semi Truck - 72" Raised Roof Sleeper, Cummins 450HP, 10 Speed Automatic

Price Drop

$32,500 USD

CLEAN FLEET MAINTAINED, CUMMINS X15 POWER, AUTO TRANS, DOUBLE BUNK ,APU, GREAT TIRES, DOUBLE TANKS, READY TO WORK. FOR MORE TRUCKS PLEASE VISIT OUR SITE

Condition	Used
Usage	530,508 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	10 Speed Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	7120
MLS Number	13853341
Category	Sleeper Semi Trucks
Last Updated	12/23/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

72 0

2019 Peterbilt 389 Sleeper Semi Truck - 63" Mid Roof Sleeper, Cummins 450HP, 10 Speed Smart Advantage Automatic

Price Drop

$79,500 USD

LOW MILES! MULTIPLE UNITS!! CLEAN PETE 389 SLEEPER, FLEET MAINTAINED, X ENTERPRISE TRUCK, CUMMINS X15, 450HP, EATON SMART ADVANTAGE 10 SPEED AUTO TRANSMISSION, VIRGIN RUBBER, HYDRAPAK/PTO,...

Condition	Used
Usage	221,763 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	10 Speed Smart Advantage Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	63"
Suspension	Air Leaf
Rear Axle	Tandem Axle
Rear End	38,000 lb 3.08 ratio
Stock Number	7038
MLS Number	13734540
Category	Sleeper Semi Trucks
Last Updated	12/23/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

64 0

2019 Peterbilt 389 Sleeper Semi Truck - 62" Mid Roof Sleeper, Cummins 450HP, 10 Speed Smart Advantage Automatic

Price Drop

$74,500 USD

CLEAN 2019 PETERBILT 389! FLEET MAINTAINED, X ENTERPRISE TRUCK, CUMMINS X15 POWRED, EATON SMART ADVANTAGE,10 SPEED AUTO TRANSMISSION, HYDRAPAK/PTO, LEGACY PASSENGER SEAT, VIRGIN BRIDGESTONE...

Condition	Used
Usage	324,522 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	10 Speed Smart Advantage Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	62"
Suspension	Air Leaf
Rear Axle	Tandem Axle
Rear End	38,000 lb 3.08 ratio
Stock Number	7040
MLS Number	13693411
Category	Sleeper Semi Trucks
Last Updated	12/23/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd