6x4 Sleeper Semi Trucks For Sale in United States

(844) 687-___ SHOW
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2024 Freightliner Cascadia 126 Sleeper Semi Truck - 76" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

Recently Updated

$108,950 USD

**For sale: Two low-mileage DD15-powered Cascadia's, fully equipped with APU and loaded with warranty** Upgrade your fleet with the industry-leading 2024 Freightliner Cascadia 126 WITH ONLY...

Condition	Used
Usage	6,060 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	WS10445
MLS Number	14053757
Category	Sleeper Semi Trucks
Last Updated	1/31/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

(833) 781-___ SHOW
NUMBERCall Seller

2022 Freightliner Cascadia - 72" Raised Roof Double Bunk Sleeper, Detroit, Automatic, Battery Powered HVAC with Optimized Idle

Recently Updated

$64,700 USD

Condition	Used
Usage	396,183 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Detroit DD15GHG21
Drivetrain	6x4
Transmission	Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Rear Axle	Tandem Axle
Rear End	2.28 ratio
Stock Number	52634
MLS Number	14004444
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	PHOENIX, AZ, US
Sold By	Schneider

(833) 781-___ SHOW
NUMBERCall Seller

2020 Freightliner Cascadia Sleeper Semi Truck - 48" Extra-Tall Roof, Detroit, Automatic

Recently Updated

$44,000 USD

Condition	Used
Usage	435,199 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Detroit DD15 EPA 17
Drivetrain	6x4
Transmission	Detroit DT12 Automatic
Sleeper Type	Extra Tall Sleeper
Sleeper Size	48"
Rear Axle	Tandem Axle
Rear End	2.28 ratio
Stock Number	20133
MLS Number	13776847
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Carlisle, PA, US
Sold By	Schneider

(833) 801-___ SHOW
NUMBERCall Seller

2022 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Paccar 455HP, 12 Speed Endurant Amt

Newly Listed

$28,500 USD

VERY NICE TRUCK, RUNS EXCELLENT, power windows, power mirrors, heated mirrors, differential lock, double bunk, dump valve, sliding 5th wheel! FLEET MAINTAINED TRUCK!,

Condition	Used
Usage	633,693 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
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	22MX633T680
MLS Number	14118137
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(833) 801-___ SHOW
NUMBERCall Seller

2022 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Paccar 455HP, 12 Speed Endurant Amt

Newly Listed

$28,500 USD

NICE TRUCK, RUNS EXCELLENT, power windows, power mirrors, heated mirrors, differential lock, double bunk, dump valve, sliding 5th wheel! FLEET MAINTAINED TRUCK!,

Condition	Used
Usage	637,910 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
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	22MX637T680
MLS Number	14118136
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(833) 478-___ SHOW
NUMBERCall Seller

2023 Peterbilt 389 Sleeper Semi Truck - Raised Roof Sleeper, Cummins 565HP, 18 Speed Manual

Newly Listed

Contact for price

486489 Miles, Engine: CUMMINS X15, 565 HP, 18 Speed Manual Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Raised Roof Sleeper, Wheels: Aluminum, Wheel Base: 280, Tandem Rear...

Condition	Used
Usage	486,489 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	565 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	18 Speed Manual
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	7140
MLS Number	14118098
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Palmetto, GA, US
Sold By	7E Truck Sales, LLC

2022 Kenworth T680 Sleeper Semi Truck - Cummins 450HP, Automatic

Recently Updated

$75,995 USD

2022 KENWORTH T680, CUMMINS X15, AUTOMATIC TRANSMISSION, 360,694 MILES, FLEET MAINTAINED MULTIPLE UNITS AVAILABLE FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON...

Condition	Used
Usage	360,694 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	5094
MLS Number	14097552
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Recently Updated

$64,995 USD

2020 KENWORTH T680, CUMMINS X15, AUTOMATIC TRANSMISSION, 376,500 MILES, FLEET MAINTAINED FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON APPROVED CREDIT, FIRST TIME...

Condition	Used
Usage	376,500 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	7759
MLS Number	14083865
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

(855) 489-___ SHOW
NUMBERCall Seller

2021 Peterbilt 389 Sleeper Semi Truck - 72" Raised Roof Sleeper, Cummins 450HP, 13 Speed Manual

Recently Updated

$98,000 USD

Includes 6 MO/50,000 mile Engine and Aftertreatment Warranty, X15 450hp with 13 Speed manual Transmission, 72" Raise roof Sleeper, 2 Bunks, Dual Exhaust, Dual S/S Air Cleaners, Wet Kit,...

Condition	Used
Usage	20,903 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	13 Speed Manual
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	2210
MLS Number	14096140
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Rhome, TX, US
Sold By	Jordan Truck Sales of Texas, LLC

(833) 801-___ SHOW
NUMBERCall Seller

2015 Freightliner Coronado 122 SD Sleeper Semi Truck - 42" Flat Top Sleeper, Detroit 450HP, 10 Speed Manual

Recently Updated

$28,000 USD

NICE TRUCK, RUNS EXCELLENT, WET KIT, DUAL EXHAUST, FULL LOCKING REARS, DUMP VALVE, SLIDING 5TH, POWER WINDOWS, POWER MIRRORS, HEATED MIRRORS, SUPER NICE TRUCK! *SOUTHERN TRUCK/ NOT RUSTY!,

Condition	Used
Usage	813,601 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	10 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	42"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.42 ratio
Stock Number	15DET813FLATCOR
MLS Number	14053841
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(844) 624-___ SHOW
NUMBERCall Seller

2024 Freightliner Cascadia 126 Sleeper Semi Truck - 76" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

Recently Updated

$108,950 USD

**For sale: Low-mileage DD15-powered Cascadia's, fully equipped with APU and loaded with warranty* Upgrade your fleet with the industry-leading 2024 Freightliner Cascadia 126 WITH ONLY 277,...

Condition	Used
Usage	6,060 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	WS10445
MLS Number	14053756
Category	Sleeper Semi Trucks
Last Updated	1/31/2026
Location	Kansas City, MO, US
Sold By	Michelle Sells Trucks

2019 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

Price Drop $51,995 USD

2019 FREIGHTLINER CASCADIA 126, DETROIT DD15, 445,422 MILES, DETROIT DT12 AUTOMATIC TRANSMISSION, FLEET MAINTAINED FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON...

Condition	Used
Usage	445,422 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	0805
MLS Number	14029253
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2022 Kenworth T680 Sleeper Semi Truck - Cummins 450HP, 12 Speed Endurant Automatic

Price Drop $69,995 USD

2022 KENWORTH T680, CUMMINS X15, AUTOMATIC TRANSMISSION, 378,279 MILES, FLEET MAINTAINED FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON APPROVED CREDIT, FIRST TIME...

Condition	Used
Usage	348,279 Miles
Duty Class	Heavy Duty Sleeper Semi 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
Stock Number	5077
MLS Number	14029224
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

(844) 307-___ SHOW
NUMBERCall Seller

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

Newly Listed

$49,750 USD

Inspection Report

Condition	Used
Usage	473,656 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	505586
MLS Number	14117996
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Tampa, FL, US
Sold By	International Motors, LLC

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

Recently Updated

$102,999 USD

AUTOMATIC HOOD! This 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...

Condition	Used
Usage	365,522 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	8680204
MLS Number	13988140
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Pewaukee, WI, US
Sold By	JX Truck Center

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

Recently Updated

$102,999 USD

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! This unit only...

Condition	Used
Usage	354,536 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	8680203
MLS Number	13988136
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Pewaukee, WI, US
Sold By	JX Truck Center

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

Recently Updated

$102,999 USD

AUTOMATIC Transmission Peterbilt 389! 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...

Condition	Used
Usage	373,407 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	8680188
MLS Number	13988074
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Bolingbrook, IL, US
Sold By	JX Truck Center

2021 Peterbilt 579 Sleeper Semi Truck - 80" Raised Roof Sleeper, Paccar 485HP, Automatic

Price Drop $34,900 USD

ULTRALOFT! This 2021 Ultraloft Peterbilt 579 Double Bunk Sleeper is boasting an 80in Double Bunk Sleeper with Rear Climate Control; Inverter; Microwave and TV Prep; Front Disc Brakes; Air...

Condition	Used
Usage	552,921 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	485 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	80"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.93 ratio
Stock Number	8680148
MLS Number	13988034
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Rockford, IL, US
Sold By	JX Truck Center

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

Price Drop $48,995 USD

2020 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 550,306 MILES, FLEET MAINTAINED MULTIPLE UNITS AVAILABLE FINANCING AVAILABLE FOR ALL CREDIT TYPES,...

Condition	Used
Usage	550,306 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	0628
MLS Number	13985520
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2022 Kenworth T680 Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

Recently Updated

$79,995 USD

2022 KENWORTH T680 NEXT GEN, CUMMINS X15, 450 HP, AUTOMATIC TRANSMISSION, 303,000 MILES, FLEET MAINTAINED FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON APPROVED...

Condition	Used
Usage	303,000 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	5209
MLS Number	13985517
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Price Drop $63,995 USD

2021 KENWORTH T680, CUMMINS X15, AUTOMATIC TRANSMISSION, 383,863 MILES, FLEET MAINTAINED FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON APPROVED CREDIT, FIRST TIME...

Condition	Used
Usage	383,863 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	6008
MLS Number	13985516
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Price Drop $64,995 USD

2021 KENWORTH T680, CUMMINS X15, AUTOMATIC TRANSMISSION, 369,558 MILES, FLEET MAINTAINED MULTIPLE UNITS AVAILABLE FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON...

Condition	Used
Usage	369,558 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	5997
MLS Number	13985515
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2022 Kenworth T680 Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

Price Drop $72,995 USD

2022 KENWORTH T680 NEXT GEN, CUMMINS X15, AUTOMATIC TRANSMISSION, 389,117 MILES, FLEET MAINTAINED FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON APPROVED CREDIT, FIRST...

Condition	Used
Usage	389,117 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	5100
MLS Number	13985494
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Price Drop $54,995 USD

2021 KENWORTH T680, CUMMINS X15, AUTOMATIC TRANSMISSION, 495,540 MILES, FLEET MAINTAINED FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON APPROVED CREDIT, FIRST TIME...

Condition	Used
Usage	495,540 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	5862
MLS Number	13985491
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet