Heavy Duty 6x4 Sleeper Semi Trucks For Sale

Your Current Search
Industry
Trucks
Category
Sleeper Semi Trucks
GVWR Category
Heavy Duty
Drive Type
6x4
Click the to remove the filter.
Narrow Your Search
Keyword Search
Search within the selected criteria
Industry
Trucks (2600)
Category
Sleeper Semi Trucks (2600)
Model
Select a manufacturer to view available models.
Model Year
-
GVWR Category
Heavy Duty (2600)
Cab Style
Fuel Type
Mileage
-
Horsepower
-
Inspection Report
Warranty
Price
-
State / Region
Select a country to view available states.
Seller Type
1-25 of 2,600 results
1-25 of 2,600 results
Western Star 49X Sleeper Semi Truck - Detroit 600HP, 18 Speed Manual
10 0

2025 Western Star 49X Sleeper Semi Truck - Detroit 600HP, 18 Speed Manual

Call for price
1356 Miles, Engine: DETROIT DD16, 600 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Air Ride Suspension, Wheels: Aluminum, Wheel Base: 254, Tandem Rear Axles, Rear Axle...
ConditionUsed
Usage1,356 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power600 HP
Engine ModelDetroit DD16
Drivetrain6x4
Transmission18 Speed Manual
SuspensionAir Ride
Rear AxleTandem Axle
Rear End46,000 lb
Stock NumberWS4899
MLS Number13171682
CategorySleeper Semi Trucks
Last Updated10/11/2024
Location
Fort Kent, ME, US
Sold By

Freightliner of Maine

Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual
13 0

2025 Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual

Call for price
1266 Miles, Engine: DETROIT DD16, 600 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Spring Suspension, Sleeper Type: Flat Top Sleeper, Wheels: Aluminum, Wheel Base: 254,...
ConditionNew
Usage1,266 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power600 HP
Engine ModelDetroit DD16
Drivetrain6x4
Transmission18 Speed Manual
Sleeper TypeFlat Top Sleeper
SuspensionSpring
Rear AxleTandem Axle
Rear End46,000 lb
Stock NumberWS4898
MLS Number13218645
CategorySleeper Semi Trucks
Last Updated11/7/2024
Location
Fort Kent, ME, US
Sold By

Freightliner of Maine

Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual
13 0

2025 Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual

Call for price
6 Miles, Engine: DETROIT DD16, 600 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Flat Top Sleeper, Wheels: Aluminum, Wheel Base: 250,...
ConditionNew
Usage6 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power600 HP
Engine ModelDetroit DD16
Drivetrain6x4
Transmission18 Speed Manual
Sleeper TypeFlat Top Sleeper
SuspensionAir Ride
Rear AxleTandem Axle
Rear End46,000 lb
Stock NumberWS4882
MLS Number13142937
CategorySleeper Semi Trucks
Last Updated9/28/2024
Location
Bangor, ME, US
Sold By

Freightliner of Maine

Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual
11 0

2025 Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual

Call for price
984 Miles, Engine: DETROIT DD16, 600 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Flat Top Sleeper, Wheels: Aluminum, Wheel Base: 250,...
ConditionNew
Usage984 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power600 HP
Engine ModelDetroit DD16
Drivetrain6x4
Transmission18 Speed Manual
Sleeper TypeFlat Top Sleeper
SuspensionAir Ride
Rear AxleTandem Axle
Rear End46,000 lb
Stock NumberWS4880
MLS Number13117974
CategorySleeper Semi Trucks
Last Updated9/17/2024
Location
Bangor, ME, US
Sold By

Freightliner of Maine

Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual
12 0

2025 Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual

Call for price
8 Miles, Engine: DETROIT DD16, 600 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Flat Top Sleeper, Wheel Base: 250, Tandem Rear Axles,...
ConditionNew
Usage8 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power600 HP
Engine ModelDetroit DD16
Drivetrain6x4
Transmission18 Speed Manual
Sleeper TypeFlat Top Sleeper
SuspensionAir Ride
Rear AxleTandem Axle
Rear End46,000 lb
Stock NumberWS4875
MLS Number13051473
CategorySleeper Semi Trucks
Last Updated9/26/2024
Location
Bangor, ME, US
Sold By

Freightliner of Maine

Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual
12 0

2025 Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual

Call for price
7 Miles, Engine: DETROIT DD16, 600 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Flat Top Sleeper, Wheels: Aluminum, Wheel Base: 250,...
ConditionNew
Usage7 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power600 HP
Engine ModelDetroit DD16
Drivetrain6x4
Transmission18 Speed Manual
Sleeper TypeFlat Top Sleeper
SuspensionAir Ride
Rear AxleTandem Axle
Rear End46,000 lb
Stock NumberWS4874
MLS Number13138144
CategorySleeper Semi Trucks
Last Updated9/28/2024
Location
Fort Kent, ME, US
Sold By

Freightliner of Maine

Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual
15 0

2025 Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual

Call for price
1085 Miles, Engine: DETROIT DD16, 600 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Flat Top Sleeper, Wheel Base: 250, Tandem Rear Axles...
ConditionNew
Usage1,085 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power600 HP
Engine ModelDetroit DD16
Drivetrain6x4
Transmission18 Speed Manual
Sleeper TypeFlat Top Sleeper
SuspensionAir Ride
Rear AxleTandem Axle
Rear End46,000 lb
Stock NumberWS4873
MLS Number13051483
CategorySleeper Semi Trucks
Last Updated8/21/2024
Location
Bangor, ME, US
Sold By

Freightliner of Maine

Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual
12 0

2025 Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual

Call for price
1281 Miles, Engine: DETROIT DD16, 600 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Flat Top Sleeper, Wheel Base: 250, Tandem Rear Axles...
ConditionNew
Usage1,281 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power600 HP
Engine ModelDetroit DD16
Drivetrain6x4
Transmission18 Speed Manual
Sleeper TypeFlat Top Sleeper
SuspensionAir Ride
Rear AxleTandem Axle
Rear End46,000 lb
Stock NumberWS4872
MLS Number13051647
CategorySleeper Semi Trucks
Last Updated8/22/2024
Location
Fort Kent, ME, US
Sold By

Freightliner of Maine

Western Star 49X Sleeper Semi Truck - 36" Flat Top Sleeper, Detroit 600HP, 18 Speed Manual
12 0

2025 Western Star 49X Sleeper Semi Truck - 36" Flat Top Sleeper, Detroit 600HP, 18 Speed Manual

Call for price
914 Miles, Engine: DETROIT DD16, 600 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Spring Suspension, Sleeper Type: Flat Top Sleeper, Sleeper Size: 36, Wheel Base: 254,...
ConditionNew
Usage914 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power600 HP
Engine ModelDetroit DD16
Drivetrain6x4
Transmission18 Speed Manual
Sleeper TypeFlat Top Sleeper
Sleeper Size36"
SuspensionSpring
Rear AxleTandem Axle
Rear End46,000 lb
Stock NumberWS4863
MLS Number13056867
CategorySleeper Semi Trucks
Last Updated8/21/2024
Location
Fort Kent, ME, US
Sold By

Freightliner of Maine

Western Star 49X Sleeper Semi Truck - Detroit 600HP, 18 Speed Manual
15 0

2025 Western Star 49X Sleeper Semi Truck - Detroit 600HP, 18 Speed Manual

Call for price
1384 Miles, Engine: DETROIT DD16, 600 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Spring Suspension, Tandem Rear Axles, Rear Axle Weight: 46000 lb
ConditionNew
Usage1,384 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power600 HP
Engine ModelDetroit DD16
Drivetrain6x4
Transmission18 Speed Manual
SuspensionSpring
Rear AxleTandem Axle
Rear End46,000 lb
Stock NumberWS4852
MLS Number13038859
CategorySleeper Semi Trucks
Last Updated8/21/2024
Location
Fort Kent, ME, US
Sold By

Freightliner of Maine

Western Star 49X Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 13 Speed Manual
12 0

2024 Western Star 49X Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 13 Speed Manual

$171,500 USD
1040 Miles, Engine: DETROIT DD15, 505 HP, Fuel Type: Diesel, 13 Speed Manual Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Raised Roof Sleeper, Sleeper Size: 72, Tires:...
ConditionNew
Usage1,040 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power505 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission13 Speed Manual
Sleeper TypeRaised Roof Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock NumberWS4761
MLS Number12442510
CategorySleeper Semi Trucks
Last Updated10/31/2024
Location
Bangor, ME, US
Sold By

Freightliner of Maine

Western Star 4900EX Sleeper Semi Truck - 84" Raised Roof Sleeper, Detroit 600HP, 13 Speed Manual
21 0

2022 Western Star 4900EX Sleeper Semi Truck - 84" Raised Roof Sleeper, Detroit 600HP, 13 Speed Manual

$139,500 USD
Customer owned unit, eager to sell! Call us today! Experience the power and efficiency of the Detroit 600/1850 T 12 engine in style! This beast comes equipped with impressive features such...
ConditionUsed
Usage181,112 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power600 HP
Engine ModelDetroit DD16
Drivetrain6x4
Transmission13 Speed Manual
Sleeper TypeRaised Roof Sleeper
Sleeper Size84"
Suspension4 Bag Air Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.42 ratio
Stock NumberWS4569
MLS Number12938057
CategorySleeper Semi Trucks
Last Updated10/16/2024
Location
Bangor, ME, US
Sold By

Freightliner of Maine

Freightliner FLD120 Classic Sleeper Semi Truck - Flat Top Sleeper, Detroit 470HP, 13 Speed Manual
20 0

2006 Freightliner FLD120 Classic Sleeper Semi Truck - Flat Top Sleeper, Detroit 470HP, 13 Speed Manual

Call for price
2006 FREIGHTLINER CLASSIC, 14 LITER DETROIT 470HP, RTLO-16913A TRANSMISSION, MERITOR RT-40-145 R-SRS RATIO 3.42, WET KIT WITH HYDRAULIC FLUID HEATER, 240 INCH WHEEL BASE,
ConditionUsed
Usage838,727 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power470 HP
Drivetrain6x4
Transmission13 Speed Manual
Sleeper TypeFlat Top Sleeper
SuspensionAirLiner
Rear AxleTandem Axle
Rear End3.42 ratio
Stock NumberV93607-FLC
MLS Number13118064
CategorySleeper Semi Trucks
Last Updated9/17/2024
Location
OGDEN, UT, US
Sold By

Rocky Mountain Truck Parts

Freightliner Columbia 120 Sleeper Semi Truck - Raised Roof Sleeper, Detroit, 12 Speed Dt12 Automatic
9 1

2006 Freightliner Columbia 120 Sleeper Semi Truck - Raised Roof Sleeper, Detroit, 12 Speed Dt12 Automatic

Call for price
2006 FREIGHTLINER COLUMBIA 120, 14 LITER DETROIT SERIES 60, AUTOMATIC TRANSMISSION, APU, OVERHAULED BY SMITH POWER,,
ConditionUsed
Duty ClassHeavy Duty Sleeper Semi Truck
Engine ModelDetroit SERIES 60 14.0 DDEC V
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automatic
Sleeper TypeRaised Roof Sleeper
SuspensionAirLiner
Rear AxleTandem Axle
Stock NumberV93380-FL
MLS Number12946394
CategorySleeper Semi Trucks
Last Updated6/21/2024
Location
OGDEN, UT, US
Sold By

Rocky Mountain Truck Parts

2021 Freightliner Cascadia Sleeper Semi Truck - 400HP, Automatic / Quantity 2
5 0

2021 Freightliner Cascadia Sleeper Semi Truck - 400HP, Automatic / Quantity 2

$52,500 USD
Quantity2
ConditionUsed
Usage452,982 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power400 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Automatic
Rear AxleTri Axle
Stock NumberUJ4916
MLS Number13175385
CategorySleeper Semi Trucks
Last Updated10/15/2024
Location
Crestwood, IL, US
Sold By

Optima Truck & Trailer Sales Inc

Freightliner Cascadia 126 Sleeper Semi Truck - Detroit
94 0

2023 Freightliner Cascadia 126 Sleeper Semi Truck - Detroit

$104,900 USD
274313 Miles, 9665 Hours, Engine: DETROIT DD15, 455 HP, Fuel Type: Diesel, 12 Speed Endurant AMT Transmission, Drive: 6x4, Overdrive, Air Ride Suspension, Sleeper Type: Raised Roof Sleeper,...
ConditionUsed
Usage9,665 Hours
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDetroit DD15
Emission RatingUSA Tier 4 Final
Drivetrain6x4
Transmission12 Speed Endurant Automated
Sleeper TypeRaised Roof Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 2.79 ratio
Stock NumberUH2061
MLS Number13068305
CategorySleeper Semi Trucks
Last Updated10/30/2024
Location
Elgin, IL, US
Sold By

TFS Recovery, Inc.

2015 Peterbilt 579 Sleeper Semi Truck - 445HP, Automatic
9 0

2015 Peterbilt 579 Sleeper Semi Truck - 445HP, Automatic

$25,000 USD
ConditionUsed
Usage746,757 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power445 HP
Engine ModelPaccar
Drivetrain6x4
Sleeper TypeDouble Bunk
SuspensionAir Ride
Stock NumberU90287
MLS Number13207380
CategorySleeper Semi Trucks
Last Updated10/31/2024
Location
Crestwood, IL, US
Sold By

Optima Truck & Trailer Sales Inc

2020 International Sleeper Semi Truck
19 0

2020 International Sleeper Semi Truck

$49,950 USD
ConditionUsed
Usage385,346 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Upfit MakeInternational
Horse Power450 HP
Engine ModelCummins CUMMINS X-15
Drivetrain6x4
Transmission12 Speed Automatic
SuspensionAir Ride
Rear AxleTandem Axle
Rear End3.36 ratio
Stock NumberU-8405
MLS Number12760654
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 Kenworth T680 Sleeper Semi Truck, Thermo King APU, Virgin Drive tires
19 0

2020 Kenworth T680 Sleeper Semi Truck, Thermo King APU, Virgin Drive tires

$67,950 USD
ConditionUsed
Usage450,654 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power450 HP
Engine ModelCummins CUMMINS X-15
Drivetrain6x4
Transmission12 Speed Automatic
Sleeper TypeDouble Bunk
Sleeper Size76"
SuspensionAir Ride
Rear AxleTandem Axle
Stock NumberU-8397
MLS Number12760672
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 Freightliner Cascadia Sleeper Semi Truck
20 0

2020 Freightliner Cascadia Sleeper Semi Truck

$47,950 USD
ConditionUsed
Usage570,912 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automatic
Sleeper TypeMid Roof XT Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End3.08 ratio
Stock Numberu-8222
MLS Number12690763
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, US
Sold By

Impel Union Inc.

2020 Freightliner Cascadia Sleeper Semi Truck
19 0

2020 Freightliner Cascadia Sleeper Semi Truck

$49,950 USD
ConditionUsed
Usage513,853 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automatic
Sleeper TypeMid Roof XT Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End3.08 ratio
Stock NumberU-8221
MLS Number12690759
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, US
Sold By

Impel Union Inc.

2020 Freightliner Cascadia Sleeper Semi Truck
20 0

2020 Freightliner Cascadia Sleeper Semi Truck

$49,950 USD
ConditionUsed
Usage510,100 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automatic
Sleeper TypeMid Roof XT Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End3.08 ratio
Stock Numberu-8219
MLS Number12690762
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, US
Sold By

Impel Union Inc.

2020 International LT Sleeper Semi Truck
20 0

2020 International LT Sleeper Semi Truck

$45,950 USD
ConditionUsed
Usage423,593 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power400 HP
Engine ModelCummins CUMMINS X-15
Drivetrain6x4
Transmission12 Speed Automatic
Sleeper TypeMid Roof XT Sleeper
SuspensionAir Ride
Rear AxleTandem Axle
Stock NumberU-8053
MLS Number12760639
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 International LT Sleeper Semi Truck
20 0

2020 International LT Sleeper Semi Truck

$45,950 USD
ConditionUsed
Usage423,555 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Engine ModelCummins CUMMINS X-15
Drivetrain6x4
Transmission12 Speed Automatic
Sleeper TypeMid Roof XT Sleeper
SuspensionAir Ride
Rear AxleTandem Axle
Stock NumberU-8052
MLS Number12735238
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 International LT Sleeper Semi Truck
21 0

2020 International LT Sleeper Semi Truck

$45,950 USD
ConditionUsed
Usage423,555 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power400 HP
Engine ModelCummins CUMMINS X-15
Drivetrain6x4
Transmission12 Speed Automatic
Sleeper TypeMid Roof XT Sleeper
SuspensionAir Ride
Rear AxleTandem Axle
Stock NumberU-8052
MLS Number12760640
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

Related searches
Did you find what you were looking for? Yes No
Got a sleeper semi truck to sell? In minutes, you can create an online listing for your sleeper semi truck and advertise it to thousands of buyers.
Start selling today