Used Diesel 12 Speed Trucks with Cummins Engines For Sale

(888) 493-___ SHOW
NUMBERCall Seller

Featured Item

27 1

2022 Peterbilt 579 Sleeper Semi Truck

$79,900 USD

2022 Peterbilt 579 – Road Ready and Fleet Friendly! Stock1272928, Looking for late-model trucks that are driver-preferred and ready to roll? Check out our 2022 Peterbilt 579 units, built...

Quantity	6
Condition	Used
Usage	424,000 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	Unibilt
Sleeper Size	80"
Suspension	Flex Air
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	1272928
MLS Number	13503970
Category	Sleeper Semi Trucks
Last Updated	7/19/2025
Location	Atlanta, GA, US
Sold By	Rush Truck Centers Atlanta

(541) 480-___ SHOW
NUMBERCall Seller

Featured Item

32 0

2022 Peterbilt 579 Cab-over Sleeper With 53' Great Dane Trailer

$99,500 USD

This is a very nice one owner truck that has mostly traveled the I5 lane. It has been well maintained, with excellent tires 13,200 front axle and suspension with front air disc...

Condition	Used
Usage	331,517 Miles
Duty Class	Heavy Duty Cabover with Sleeper
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed
Sleeper Type	UltraLoft
Sleeper Size	80"
MLS Number	13441176
Category	Cabover Sleepers
Last Updated	7/29/2025
Location	Eugene, OR, US
Sold By	Skyline Equipment Co.

(833) 695-___ SHOW
NUMBERCall Seller

Featured Item

26 0

2020 International LT625 Sleeper Semi Truck

$46,100 USD

Call for rental/lease prices

Double Bunk Completely reconditioned,, ready for new owner . Cummins 15 litre auto trans double bunk Price includes 90 day 25,000 mile limited warrenty Lease or finance OAC

Warranty

Quantity	2
Condition	Used
Usage	416,439 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15, Signature
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Double Bunk
Rear Axle	Tandem Axle
Stock Number	21450
MLS Number	12934384
Category	Sleeper Semi Trucks
Last Updated	7/28/2025
Location	Benicia, CA, US
Sold By	NorCal Truck Sales and Mfg.

(855) 807-___ SHOW
NUMBERCall Seller

69 0

2020 Peterbilt 579 Tandem Axle Flatbed Truck - 525HP, 12 Speed Endurant Automatic

Newly Listed

$109,500 USD

FRESH OVERHAUL WITH PAPERWORK!! VERY CLEAN AND MAINTAINED PETERBILT 579 WITH ARI LEGACY CUSTOM 155 INCH SLEEPER, CUMMINS 525HP, 12 SPEED AUTOMATIC, SLIDING 5TH WHEEL, 14,600 FAW, 40,000 RAW,...

Condition	Used
Usage	1,078,195 Miles
Duty Class	Heavy Duty Flatbed Truck
Horse Power	525 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	155"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	6904Toter
MLS Number	13734665
Category	Flatbed Trucks
Last Updated	7/31/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

28 0

2021 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

Recently Updated

$59,000 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	407,691 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 3.25 ratio
Stock Number	216671
MLS Number	13611973
Category	Sleeper Semi Trucks
Last Updated	7/31/2025
Location	Mebane, NC, US
Sold By	Penske Used Trucks

23 0

2021 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

Price Drop

$45,500 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	543,943 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 3.25 ratio
Stock Number	375899
MLS Number	13607026
Category	Sleeper Semi Trucks
Last Updated	7/31/2025
Location	Mebane, NC, US
Sold By	Penske Used Trucks

(844) 624-___ SHOW
NUMBERCall Seller

25 0

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

Recently Updated

$42,950 USD

For Sale: 2020 International LT - Cummins Powered, Low Miles!, Equipped with a 450hp Cummins X15, 12 Speed Automatic Transmission. Only 217k Miles! Key Features Include: Smart Wheel Controls...

Condition	Used
Usage	13,788 Hours
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Ultrashift Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	CO10583
MLS Number	13715107
Category	Day Cab Semi Trucks
Last Updated	7/31/2025
Location	Kansas City, MO, US
Sold By	Michelle Sells Trucks

(844) 624-___ SHOW
NUMBERCall Seller

24 0

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

Recently Updated

$42,950 USD

For Sale: 2020 International LT - Cummins Powered, Low Miles!, Equipped with a 450hp Cummins X15, 12 Speed Automatic Transmission. Only 217k Miles! Key Features Include: Smart Wheel Controls...

Condition	Used
Usage	217,032 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Ultrashift Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	CO10583
MLS Number	13715106
Category	Day Cab Semi Trucks
Last Updated	7/31/2025
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

(844) 307-___ SHOW
NUMBERCall Seller

33 0

2021 International LT625 Sleeper Semi Truck - 73" Hi Rise Sleeper, Cummins 400HP, 12 Speed

Recently Updated

$55,000 USD

Inspection Report

Condition	Used
Usage	445,061 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Hi Rise Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear End	20,000 lb 2.64 ratio
Stock Number	502538
MLS Number	13586432
Category	Sleeper Semi Trucks
Last Updated	7/31/2025
Location	Charlotte, NC, US
Sold By	International Motors, LLC

(855) 807-___ SHOW
NUMBERCall Seller

40 0

2025 Peterbilt 567 Tri Axle Day Cab Truck - Cummins 525HP, 12 Speed Automatic

Recently Updated

$209,500 USD

$7,000/mo to rent

CLEAN LIKE NEW 2025 PETERBILT 567, FACTORY WARRANTY FROM IN SERVICE DATE 2 YEAR 250K ON ENGINE, 5 YEAR 100,000 CUMMINS POWERED 525HP, EATON 12 SPEED AUTO TRANSMISSION, AIR TRAC SUSPENSION,...

Condition	Used
Usage	84,130 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	525 HP
Engine Model	Cummins X15
Drivetrain	8x4
Transmission	12 Speed Endurant Automatic
Suspension	Air Trac
Rear Axle	Tri Axle
Rear End	59,500 lb 3.73 ratio
Stock Number	7036
MLS Number	13679951
Category	Day Cab Semi Trucks
Last Updated	7/31/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

(844) 216-___ SHOW
NUMBERCall Seller

44 4

2020 Kenworth T680 Sleeper Semi Truck - Raised Roof Sleeper, Cummins 500HP, 12 Speed Automatic

Recently Updated

$59,900 USD

430,353 Miles, Cummins X15 Engine, 500 H.P Engine Brake, Endurant Automatic - 12 Speed, Fleet Maintained, Navigation, Virgin Rubber, Fridge, 76" Condo Sleeper with Workstation Upper Bunk,...

Condition	Used
Usage	430,353 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
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	417831
MLS Number	13603401
Category	Sleeper Semi Trucks
Last Updated	7/31/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

(844) 216-___ SHOW
NUMBERCall Seller

24 0

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

Price Drop

$51,500 USD

430,655 Miles, Cummins X15 100th Anniversary Edition, 450HP, 12 Speed Eaton Automatic, Double Bunk, Aluminum wheels, Battery APU, Collision Mitigation System, Inverter, Air Slide 5th Wheel,...

Condition	Used
Usage	430,655 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
Sleeper Size	76"
Suspension	Paccar
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	399405
MLS Number	13586519
Category	Sleeper Semi Trucks
Last Updated	7/31/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

(844) 216-___ SHOW
NUMBERCall Seller

34 1

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

Recently Updated

$49,500 USD

X15 – 450HP, 12 Speed automatic, Double bunk, Aluminum wheels, Battery APU, *Rep Photos - will update with actual photos soon**,

Condition	Used
Usage	518,100 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
Sleeper Size	76"
Suspension	Paccar
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	399402
MLS Number	13586515
Category	Sleeper Semi Trucks
Last Updated	7/31/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

(855) 717-___ SHOW
NUMBERCall Seller

39 1

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

Recently Updated

$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	7/31/2025
Location	Turlock, CA, US
Sold By	Diamond Truck Sales Inc

26 0

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

Recently Updated

$53,000 USD

SPECIAL PROMOTION - Original Price: $58000.00 Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We...

Condition	Used
Usage	526,104 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	UPS234930
MLS Number	13607732
Category	Sleeper Semi Trucks
Last Updated	7/30/2025
Location	Sturtevant, WI, US
Sold By	Penske Used Trucks

24 0

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

Recently Updated

$71,750 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	393,260 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 3.25 ratio
Stock Number	419131
MLS Number	13574681
Category	Sleeper Semi Trucks
Last Updated	7/30/2025
Location	North Bergen, NJ, US
Sold By	Penske Used Trucks

23 0

2021 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

Recently Updated

$67,750 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	376,887 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	394933
MLS Number	13710027
Category	Sleeper Semi Trucks
Last Updated	7/31/2025
Location	Greeley, CO, US
Sold By	Penske Used Trucks

28 0

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

Recently Updated

$48,500 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	496,914 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	356887
MLS Number	12442515
Category	Sleeper Semi Trucks
Last Updated	7/30/2025
Location	Indian Trail, NC, US
Sold By	Penske Used Trucks

18 0

2020 International LT625 Day Cab Truck - Cummins 450HP, 12 Speed Automatic

Recently Updated

$40,750 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	410,600 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	12 Speed Automatic
Sleeper Size	0"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	353974
MLS Number	12718995
Category	Day Cab Semi Trucks
Last Updated	7/30/2025
Location	Stockton, CA, US
Sold By	Penske Used Trucks

25 0

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

Price Drop

$57,250 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	342,261 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	353504
MLS Number	13657266
Category	Sleeper Semi Trucks
Last Updated	7/31/2025
Location	Middlefield, OH, US
Sold By	Penske Used Trucks

23 0

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

Recently Updated

$53,000 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	389,184 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	353473
MLS Number	13514116
Category	Sleeper Semi Trucks
Last Updated	7/31/2025
Location	Brook Park, OH, US
Sold By	Penske Used Trucks

(844) 624-___ SHOW
NUMBERCall Seller

25 0

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

Recently Updated

$42,950 USD

For Sale: 2020 International LT - Cummins Powered, Low Miles!, Equipped with a 450hp Cummins X15, 12 Speed Automatic Transmission. Only 217k Miles! Key Features Include: Smart Wheel Controls...

Condition	Used
Usage	13,788 Hours
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Ultrashift Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	CO10583
MLS Number	13715108
Category	Day Cab Semi Trucks
Last Updated	7/31/2025
Location	Oklahoma City, OK, US
Sold By	Michelle Sells Trucks

23 0

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

Recently Updated

$36,250 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	628,936 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	338190
MLS Number	12580818
Category	Sleeper Semi Trucks
Last Updated	7/30/2025
Location	Hammond, LA, US
Sold By	Penske Used Trucks