6x4 Sleeper Semi Trucks with Cummins Engines For Sale

(833) 658-___ SHOW
NUMBERCall Seller

2025 Kenworth W990 Sleeper Semi Truck, Over the Road, Delivery, Hauler, Day Cab, Tractor, Trucking, Cummins Engine, Wet Kit, Headache Rack, Tandem

$169,999 USD

2025 Kenworth W990 Sleeper , Stock: 129952, VIN:1XK1D49X5SJ129952, Year: 2025, Make: Kenworth, Model: W990, Engine:Cummins X15 565 hp Engine, Mileage: 122031, Horsepower: 565HP,...

Condition	Used
Usage	2,277 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins ISX / X15
Drivetrain	6x4
Transmission	10 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	129952
MLS Number	14047480
Category	Sleeper Semi Trucks
Last Updated	2/3/2026
Location	Elkton, MD, US
Sold By	Complete Recycling Group LLC

(888) 853-___ SHOW
NUMBERCall Seller

2010 Kenworth T660 Sleeper Semi Truck - Mid Roof Sleeper, Cummins 450HP, 10 Speed Amt

$26,900 USD

2010 Kenworth T660, ISX15 450 hp Cummins, 10 speed automatic transmission, 3.55 rear end ratio, air ride suspension, half fenders over drives, aluminum wheels, fender mirrors, painted visor,...

Condition	Used
Usage	777,108 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins ISX15
Drivetrain	6x4
Transmission	10 Speed Automated
Sleeper Type	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	4821
MLS Number	14000088
Category	Sleeper Semi Trucks
Last Updated	1/22/2026
Location	New Salem, ND, US
Sold By	Pedigree Truck and Trailer Sales, Inc.

(833) 490-___ SHOW
NUMBERCall Seller

2021 International LT625 Sleeper, Affordable, Cummins X15 450hp, Dot Passing, Fresh Detail, Warranty Options , Zero Down Financing (WAC)

Recently Updated

$39,950 USD

Grab this road-ready 2021 International LT before it’s gone—low-mileage Cummins X15 450HP powerhouse, butter-smooth 12-speed automatic, 215 WB, 2.79 rears with massive 200-gallon fuel...

Warranty

Quantity	13
Condition	Used
Usage	494,226 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15, Signature
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	56"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.00 ratio
Stock Number	U066838
MLS Number	13999604
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Springfield, MO, US
Sold By	Tri State Truck Center - Springfield, MO

(833) 538-___ SHOW
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Tri State Truck Center - Springfield, MO

2023 Peterbilt 389 Sleeper Semi Truck - 78" Mid Roof Sleeper, Cummins 500HP, 18 Speed Manual

Newly Listed

Contact for price

369191 Miles, 12413 Hours, Engine: CUMMINS X15, 500 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Mid Roof Sleeper, Sleeper Size: 78,...

Condition	Used
Usage	12,413 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	18 Speed Manual
Sleeper Type	Mid Roof Sleeper
Sleeper Size	78"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.55 ratio
Stock Number	4002
MLS Number	14124513
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Idaho Falls, ID, US
Sold By	Dad's Truck and Trailer Sales

(855) 910-___ SHOW
NUMBERCall Seller

2021 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Amt

Newly Listed

$44,950 USD

Cummins Engine, N.A.P., Air Release 5th Wheel, Auto Trans, Espar Bunk Heater, Invertor, Jumper Posts, LED Lights, Fridge, Sliding 5th Wheel, Well Maintained Fleet Truck, Oil Changed Every...

Condition	Used
Usage	456,527 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	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	3609
MLS Number	14124213
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	GRANGER, IA, US
Sold By	Barr-Nunn Transportation LLC

(844) 624-___ SHOW
NUMBERCall Seller

2022 International LT Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, 10 Speed Manual

Recently Updated

$59,950 USD

2022 International LT625 for sale - LOW MILES only 220k miles!, - 10 speed manual, - 450 HP Cummins X15 motor, - High rise sleeper with single bunk, - Electric APU, - Fresh DOT and...

Condition	Used
Usage	220,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins ISX
Drivetrain	6x4
Transmission	10 Speed Manual
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	MO11060
MLS Number	14111281
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Kansas City, MO, US
Sold By	Michelle Sells Trucks

(833) 538-___ SHOW
NUMBERCall Seller

2023 Peterbilt 389 Sleeper Semi Truck - 72" Mid Roof Sleeper, Cummins 565HP, 18 Speed Manual

Recently Updated

$124,900 USD

457801 Miles, Engine: CUMMINS X15, 500 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Mid Roof Sleeper, Sleeper Size: 78, Tires: 22.5 low...

Condition	Used
Usage	457,801 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	18 Speed Manual
Sleeper Type	Mid Roof Sleeper
Sleeper Size	78"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.55 ratio
Stock Number	4000
MLS Number	14105490
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Idaho Falls, ID, US
Sold By	Dad's Truck and Trailer Sales

(844) 985-___ SHOW
NUMBERCall Seller

2022 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 450HP, Automatic

Recently Updated

$56,900 USD

THERMOKING APU! Brand NEW Virgin Tires! This 2022 Kenworth T680 is powered by a Cummins X15 450hp Engine and a 12 Speed Automatic Transmission. It has a spacious double bunk sleeper; air...

Condition	Used
Usage	471,561 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	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	8680138
MLS Number	13963622
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Bolingbrook, IL, US
Sold By	JX Truck Center

2023 International LT625 Sleeper Semi Truck - 73" Raised Roof Sleeper, Cummins 450HP, 12 Speed

Newly Listed

$69,500 USD

Condition	Used
Usage	497,382 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear End	20,000 lb 2.79 ratio
Stock Number	505638
MLS Number	14123856
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Commerce City, CO, US
Sold By	International Motors, LLC

2022 International LT625 Sleeper Semi Truck - 73" Raised Roof Sleeper, Cummins 400HP, 12 Speed

Recently Updated

$50,000 USD

Inspection Report

Condition	Used
Usage	496,117 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear End	20,000 lb 2.64 ratio
Stock Number	504226
MLS Number	13796785
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Tampa, FL, US
Sold By	International Motors, LLC

(855) 807-___ SHOW
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2016 Peterbilt 389 Sleeper Semi Truck - 48" Flat Top Sleeper, Cummins 485HP, 10 Speed Manual

Recently Updated

$64,500 USD

PETERBILT 389 FLATTOP, 176K ON OVERHAUL WITH PAPERWORK, CUMMINS ISX15, 485HP, 10 SPEED MANUAL TRANSMISSION, 8 BRAND NEW DRIVE TIRES, 48" SLEEPER, DUAL STACKS AND BREATHERS, JAKES, LOCKERS,...

Condition	Used
Usage	819,040 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	485 HP
Engine Model	Cummins ISX15
Drivetrain	6x4
Transmission	10 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	48"
Suspension	Air Trac
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	7132
MLS Number	13916588
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

2021 International LT625 Sleeper Semi Truck - 73" Raised Roof Sleeper, Cummins 400HP, 12 Speed

Price Drop $46,500 USD

Take full advantage of Manager Special discounted pricing. *All pricing is subject to approval and terms.

Inspection Report

Condition	Used
Usage	390,671 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear End	20,000 lb 2.79 ratio
Stock Number	502472
MLS Number	13885230
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	West Sacramento, CA, US
Sold By	International Motors, LLC

(888) 758-___ SHOW
NUMBERCall Seller

2022 International LT625 Sleeper Semi Truck - 56" Hi Rise Sleeper, Cummins 400HP, 12 Speed

Price Drop $56,500 USD

Worry-Free Program AVAILABLE � 1 OR 2-Year Factory-Backed Engine Aftertreatment Warranty + Extended Vehicle Coverage Preventive Maintenance Service AVAILABLE. $0 Deductible. No Claim...

Inspection Report

Condition	Used
Usage	285,958 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	56"
Suspension	Air Ride
Rear End	20,000 lb 2.79 ratio
Stock Number	502369
MLS Number	13621578
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Kansas City, MO, US
Sold By	International Motors, LLC

2020 International LT Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, Automatic

Recently Updated

$45,995 USD

2020 INTERNATIONAL LT, CUMMINS X15, AUTOMATIC TRANSMISSION, 411,290 MILES, FLEET MAINTAINED MULTIPLE UNITS AVAILABLE FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON...

Condition	Used
Usage	411,290 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	1526
MLS Number	13794492
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2020 International LT Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, Automatic

Recently Updated

$45,995 USD

2020 INTERNATIONAL LT, CUMMINS X15, AUTOMATIC TRANSMISSION, 427,792 MILES, FLEET MAINTAINED MULTIPLE SIMILAR UNITS AVAILABLE FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN...

Condition	Used
Usage	427,792 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X12
Drivetrain	6x4
Transmission	Automatic
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	1649
MLS Number	13749891
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2020 International LT Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, Automatic

Recently Updated

$45,995 USD

2020 INTERNATIONAL LT, CUMMINS X15, AUTOMATIC TRANSMISSION, 427,168 MILES, FLEET MAINTAINED WE HAVE MULTIPLE SIMILAR UNITS FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE...

Condition	Used
Usage	427,168 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	1624
MLS Number	13749889
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2020 International LT Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, Automatic

Recently Updated

$47,995 USD

2020 INTERNATIONAL LT, CUMMINS X15, AUTOMATIC TRANSMISSION, 395,160 MILES, FLEET MAINTAINED WE HAVE MULTIPLE SIMILAR UNITS FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE...

Condition	Used
Usage	395,160 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	1778
MLS Number	13744393
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

(844) 216-___ SHOW
NUMBERCall Seller

2016 Freightliner Cascadia 125 Sleeper Semi Truck - Raised Roof Sleeper, Detroit, 10 Speed Manual

Recently Updated

$27,900 USD

693k Miles, ISX Cummins, 450 HP, 10 Speed Manual, New Clutch, PTO/HydraFlow, 3.58 Ratio, Diff Lock, 12k Fronts, 40k Rears, Aluminum Wheels, Air Slide 5th, 72" Mid-Roof Sleeper, Single Bunk,...

Condition	Used
Usage	693,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins ISX
Drivetrain	6x4
Transmission	10 Speed Manual
Sleeper Type	Mid Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.23 ratio
Stock Number	HN6478
MLS Number	13586477
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

(833) 801-___ SHOW
NUMBERCall Seller

1999 Western Star 4900EX Sleeper Semi Truck - Mid Roof Sleeper, Cummins 500HP, 10 Speed Manual

Newly Listed

$16,000 USD

GOOD TRUCK, RUNS GREAT, DUAL EXHAUST, DUAL BREATHERS, DIAMOND TUCKED INTERIOR, SLIDING 5TH WHEEL, AIR SEAT, DIFFERENTIAL LOCK, DUMP VALVE!,

Condition	Used
Usage	1,082,053 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins N14 CELECT PLUS
Drivetrain	6x4
Transmission	10 Speed Manual
Sleeper Type	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	99N14WS
MLS Number	14122337
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(855) 807-___ SHOW
NUMBERCall Seller

2019 Kenworth T880 Sleeper Semi Truck - 72" Mid Roof Sleeper, Cummins 500HP, 13 Speed Ultrashift Automatic

Newly Listed

$59,500 USD

CLEAN FLEET MAINTAINED 2019 KENWORTH T880 MIDROOF, CUMMINS X15 500HP, EATON 13 SPEED AUTOMATIC, 13,200 FAW, 40,000 RAW, GREAT 24.5 RUBBER! DOUBLE EXHAUST, FRIGERATOR, ALUMINUM RIMS! ...

Condition	Used
Usage	416,741 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	13 Speed Ultrashift Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	7184
MLS Number	14122249
Category	Sleeper Semi Trucks
Last Updated	2/3/2026
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

(833) 478-___ SHOW
NUMBERCall Seller

2020 Peterbilt 389 Sleeper Semi Truck - 70" Mid Roof Sleeper, Cummins 565HP, 18 Speed Manual

Recently Updated

Contact for price

Just in! Sharp truck with all the right specs. 565HP and 18spd and a full gauge package to keep an eye on everything. Call today for more info!,

Condition	Used
Usage	700,464 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	565 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	18 Speed Manual
Sleeper Type	Mid Roof Sleeper
Sleeper Size	70"
Suspension	Pete Low Air Leaf
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.36 ratio
Stock Number	7143
MLS Number	14087910
Category	Sleeper Semi Trucks
Last Updated	2/3/2026
Location	Palmetto, GA, US
Sold By	7E Truck Sales, LLC

(844) 985-___ SHOW
NUMBERCall Seller

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

Recently Updated

$102,999 USD

ONLY 378k Miles! CUMMINS X15 450hp 78in Double Bunk Sleeper has a 13 Speed AUTOMATIC Transmission! Dual Exhaust Stacks; Air Slide 5th Wheel; Full DISC BRAKES; Lots of Chrome including Visor!...

Condition	Used
Usage	378,248 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	78"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.42 ratio
Stock Number	8680189
MLS Number	13988075
Category	Sleeper Semi Trucks
Last Updated	2/3/2026
Location	Rockford, IL, US
Sold By	JX Truck Center

2022 International LT625 Sleeper Semi Truck - 73" Raised Roof Sleeper, Cummins 400HP, 12 Speed

Newly Listed

$65,000 USD

APU, DOT, PM, Available Warranty!

Inspection Report

Condition	Used
Usage	327,179 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear End	20,000 lb 2.79 ratio
Stock Number	505686
MLS Number	14122061
Category	Sleeper Semi Trucks
Last Updated	2/3/2026
Location	La Vergne, TN, US
Sold By	International Motors, LLC

2022 International LT625 Sleeper Semi Truck - 73" Raised Roof Sleeper, Cummins 400HP, 12 Speed

Newly Listed

$61,250 USD

APU, DOT, PM, Available Warranty!

Inspection Report

Condition	Used
Usage	411,827 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear End	20,000 lb 2.79 ratio
Stock Number	505683
MLS Number	14122060
Category	Sleeper Semi Trucks
Last Updated	2/3/2026
Location	La Vergne, TN, US
Sold By	International Motors, LLC