Used 12 Speed Trucks with Cummins Engines For Sale

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23 2

2023 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Cummins 500HP, 12 Speed Automatic

$122,950 USD

2023 FREIGHTLINER CASCADIA 126 – 500HP CUMMINS + DINETTE + APU, Only 185,637 miles – Located in Commerce City, CO This clean Cascadia is powered by a 500HP Cummins X15 and Eaton 12-speed...

Condition	Used
Usage	5,395 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	CO10375
MLS Number	13601234
Category	Sleeper Semi Trucks
Last Updated	7/16/2025
Location	Kansas City, MO, US
Sold By	Michelle Sells Trucks

(844) 624-___ SHOW
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20 2

2023 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Cummins 500HP, 12 Speed Automatic

$122,950 USD

2023 FREIGHTLINER CASCADIA 126 – 500HP CUMMINS + DINETTE + APU, Only 185,637 miles – Located in Commerce City, CO This clean Cascadia is powered by a 500HP Cummins X15 and Eaton 12-speed...

Condition	Used
Usage	5,395 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	CO10375
MLS Number	13601232
Category	Sleeper Semi Trucks
Last Updated	7/16/2025
Location	Oklahoma City, OK, US
Sold By	Michelle Sells Trucks

(855) 717-___ SHOW
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37 1

2020 Kenworth T680 Sleeper Semi Truck - Raised Roof Sleeper, Cummins 400HP, 12 Speed Endurant Automatic

Price Drop

$59,900 USD

** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC!!!!, SIDE AND FULL FAIRINGS, LIQUID DEF Se Habla Espanol! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 7 DAYS A WEEK!!!!...

Condition	Used
Usage	461,681 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.79 ratio
Stock Number	N14931-DELIVERY 2 U
MLS Number	13483844
Category	Sleeper Semi Trucks
Last Updated	7/11/2025
Location	Turlock, CA, US
Sold By	Diamond Truck Sales Inc

(855) 717-___ SHOW
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33 1

2021 Kenworth T680 Sleeper Semi Truck - 72" Raised Roof Sleeper, Cummins 400HP, 12 Speed Endurant Automatic

Price Drop

$53,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** AUTOMATIC 12 SPEED!!!!, DEF, DIFF LOCK, Se Habla Español! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 7 DAYS A WEEK!!!! ...

Condition	Used
Usage	583,645 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	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.64 ratio
Stock Number	N14930-DELIVERY 2 U
MLS Number	13483826
Category	Sleeper Semi Trucks
Last Updated	7/11/2025
Location	Turlock, CA, US
Sold By	Diamond Truck Sales Inc

(844) 624-___ SHOW
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24 1

2019 International LT Day Cab Truck - Cummins 450HP, 12 Speed Ultrashift Plus Amt

Price Drop

$32,950 USD

FOR SALE: Looking for a late-model long wheelbase day cab that's proven its worth without racking up excessive miles? This 2019 International LT is an outstanding choice. Under the hood, you...

Condition	Used
Usage	10,079 Hours
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Ultrashift Plus Automatic
Suspension	Hendrickson
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	OK10118
MLS Number	13448737
Category	Day Cab Semi Trucks
Last Updated	7/15/2025
Location	Oklahoma City, OK, US
Sold By	Michelle Sells Trucks

23 0

2023 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

$65,250 USD

Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing; extended warranties;...

Condition	Used
Usage	575,146 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	599740
MLS Number	13582417
Category	Sleeper Semi Trucks
Last Updated	7/18/2025
Location	Montgomery, AL, US
Sold By	Penske Used Trucks

25 0

2022 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

$65,606.73 USD

Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing; extended warranties;...

Condition	Used
Usage	294,933 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	454896
MLS Number	13694190
Category	Sleeper Semi Trucks
Last Updated	7/16/2025
Location	Calgary, AB, Canada
Sold By	Penske Used Trucks

23 0

2022 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

Price Drop

$64,250 USD

Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing; extended warranties;...

Condition	Used
Usage	536,638 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	UPS234934
MLS Number	13577190
Category	Sleeper Semi Trucks
Last Updated	7/17/2025
Location	Aurora, CO, US
Sold By	Penske Used Trucks

21 0

2020 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

$46,500 USD

Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing; extended warranties;...

Condition	Used
Usage	609,515 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	354287
MLS Number	13693943
Category	Sleeper Semi Trucks
Last Updated	7/16/2025
Location	Las Vegas, NV, US
Sold By	Penske Used Trucks

(833) 801-___ SHOW
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5 0

2019 Kenworth T680 Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Amt

$22,000 USD

NICE TRUCK, RUNS GREAT, CLEAN, WELL MAINTAINED, DUAL AIR RIDE SEAT, DIFFERENTIAL LOCK, DUMP VALVE, SLINDING 5TH WHEEL, POWER WINDOWS, POWER DOOR LOCKS, SMART WHEEL, FULL GAUGE PACKAGE!,

Condition	Used
Usage	774,995 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	19X15774T680
MLS Number	13693753
Category	Sleeper Semi Trucks
Last Updated	7/10/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

23 0

2020 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

$38,500 USD

MANAGERS SPECIAL Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing;...

Condition	Used
Usage	657,044 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	338157
MLS Number	13526854
Category	Sleeper Semi Trucks
Last Updated	7/13/2025
Location	Portland, OR, US
Sold By	Penske Used Trucks

23 0

2022 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

Price Drop

$66,500 USD

MANAGERS SPECIAL Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing;...

Condition	Used
Usage	487,302 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	UPP235167
MLS Number	13587318
Category	Sleeper Semi Trucks
Last Updated	7/18/2025
Location	Fontana, CA, US
Sold By	Penske Used Trucks

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49 0

2021 Peterbilt 579 Dump Truck - Cummins 450HP, 12 Speed Automatic

$69,500 USD

FLEET MAINTAINED PETERBILT 579, BRAND NEW 14'X56" DUMP BED, NEW PTO, TANK, TARP, 19 CU YARD CAPACITY, CUMMINS X15 POWERED, 12 SPD AUTOMATIC TRANSMISSION, NEW VIRGIN RUBBER! Please visit our...

Condition	Used
Usage	487,394 Miles
Duty Class	Heavy Duty Dump Truck
Bed Length	14 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	6916
MLS Number	13690363
Category	Dump Trucks
Last Updated	7/12/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

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51 0

2018 Peterbilt 579 Day Cab Truck - Cummins 450HP, 12 Speed Endurant Automatic

Price Drop

$59,500 USD

CLEAN FLEET MAINTAINED PETERBILT 579! CUMMINS X15 - 450HP! 12 SPEED EATON ENDURANT! BENDIX COLLISON MITIGATION SYSTEM! VIRGIN RUBBER! DISC BREAKS! PTO! SLIDING 5TH WHEEL! INTER AXLE DIF...

Condition	Used
Usage	214,822 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 2.93 ratio
Stock Number	7051
MLS Number	13690165
Category	Day Cab Semi Trucks
Last Updated	7/12/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

16 1

2022 Peterbilt 579 Sleeper Semi Truck

Price Drop

$79,900 USD

2022 Peterbilt 579 – 80" Ultraloft Sleeper, X15 Power, Thermo King APU, Stock #1285170 This 2022 Peterbilt 579 is spec’d for comfort and efficiency with a strong focus on uptime and fuel...

Quantity	6
Condition	Used
Usage	342,314 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	UltraLoft
Sleeper Size	80"
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	1285170
MLS Number	13540092
Category	Sleeper Semi Trucks
Last Updated	7/9/2025
Location	Atlanta, GA, US
Sold By	Rush Truck Centers Atlanta

23 1

2022 Peterbilt 579 Sleeper Semi Truck (Multiples Available)

Price Drop

$74,900 USD

2022 Peterbilt 579 – 80" Ultraloft Sleeper, X15 Power, Thermo King APU Stock #1271561 This 2022 Peterbilt 579 is spec’d for comfort and efficiency with a strong focus on uptime and fuel...

Quantity	6
Condition	Used
Usage	427,300 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins ISX
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	UltraLoft
Sleeper Size	80"
Suspension	Flex Air
Rear Axle	Tandem Axle
Rear End	2.79 ratio
Stock Number	1271561
MLS Number	13523900
Category	Sleeper Semi Trucks
Last Updated	7/9/2025
Location	Atlanta, GA, US
Sold By	Rush Truck Centers Atlanta

16 1

2022 Peterbilt 579 Sleeper Semi Truck

Price Drop

$69,900 USD

Stock 1273416 2022 Pete 579 Multiples available but they are moving quickly. 4 left. Cummins X15 Eaton Endurant 80" Ultra Loft double Bunk APU Fleet maintained and well spec'd. milage is 562...

Quantity	4
Condition	Used
Usage	562,335 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins ISX
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	UltraLoft
Sleeper Size	80"
Suspension	Air Leaf
Rear Axle	Tandem Axle
Stock Number	1273416
MLS Number	13523439
Category	Sleeper Semi Trucks
Last Updated	7/9/2025
Location	Atlanta, GA, US
Sold By	Rush Truck Centers Atlanta

18 2

2022 Peterbilt 579 Sleeper Semi Truck

Price Drop

$79,900 USD

New Body-style Peterbilt 579 Ultraloft Sleeper Discover the ultimate long haul truck that combines power, comfort, and state-of-the-art technology. This new body style Peterbilt 579...

Condition	Used
Usage	361,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	UltraLoft
Sleeper Size	80"
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	1314335
MLS Number	13415006
Category	Sleeper Semi Trucks
Last Updated	7/9/2025
Location	Atlanta, GA, US
Sold By	Rush Truck Centers Atlanta

21 1

2019 Peterbilt 579 Sleeper Semi Truck Only 456k

$49,750 USD

2019 Peterbilt 579 Ultraloft – Cummins Powered – Priced to Move Stock 1000993 Fresh arrival—this 2019 Peterbilt 579 Ultraloft just landed and is headed straight for detail and service....

Condition	Used
Usage	456,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	UltraLoft
Sleeper Size	80"
Stock Number	1000993
MLS Number	13526578
Category	Sleeper Semi Trucks
Last Updated	7/9/2025
Location	Atlanta, GA, US
Sold By	Rush Truck Centers Atlanta

22 1

2020 International LT625 Day Cab Truck

Price Drop

$43,500 USD

2020 International LT625 Daycab – Cummins X15 – Freshly Serviced Stock 1798436 This 2020 International LT625 Daycab is fleet-ready and built for performance. Powered by a 400HP Cummins X15...

Quantity	2
Condition	Used
Usage	374,966 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	400 HP
Engine Model	Cummins X15, Signature
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.79 ratio
Stock Number	1798436
MLS Number	13527792
Category	Day Cab Semi Trucks
Last Updated	7/9/2025
Location	Atlanta, GA, US
Sold By	Rush Truck Centers Atlanta

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49 0

2020 International LT Day Cab Truck - Cummins 450HP, 12 Speed Endurant Automatic

$37,500 USD

CLEAN 2020 INTERNATIONAL DAY CAB, FLEET MAINTAINED! CUMMINS X15 450HP, 12 SPEED EATON ENDURANT TRANSMISSION, JAKES, LOCKERS, DRIVER ASSISTANCE SYSTEM, NEW VIRGIN RUBBER ALL THE WAY AROUND! ...

Condition	Used
Usage	424,098 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 2.75 ratio
Stock Number	7028
MLS Number	13689944
Category	Day Cab Semi Trucks
Last Updated	7/9/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

(866) 530-___ SHOW
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9 0

2020 Kenworth T680 Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

$53,995 USD

CUMMINS X15 / AUTOMATIC TRANSMISSION / FLEET MAINTAINED / FINANCING AVAILABLE 2020 KENWORTH T680, CUMMINS X15, AUTOMATIC TRANSMISSION, 561,416 MILES, FLEET MAINTAINED, READY TO WORK ...

Condition	Used
Usage	561,416 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	8537
MLS Number	13672990
Category	Sleeper Semi Trucks
Last Updated	7/9/2025
Location	Fontana, CA, US
Sold By	Fontana Truck Center

23 0

2020 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

$48,500 USD

MANAGERS SPECIAL Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing;...

Condition	Used
Usage	429,146 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	338161
MLS Number	13383324
Category	Sleeper Semi Trucks
Last Updated	7/12/2025
Location	Asheville, NC, US
Sold By	Penske Used Trucks