Tandem Axle Sleeper Semi Trucks For Sale in Colorado

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2019 Peterbilt 579 Sleeper Semi Truck - 80" Mid Roof Sleeper, Paccar 455HP, 12 Speed Endurant Automatic

$32,950 USD

AVAILABLE FOR SALE: 2019 PETERBILT 579 SLEEPER IN KANSAS CITY, MO WAITING FOR INSPECTION AND DETAIL.. FUEL-EFFICIENT, DRIVER-FOCUSED, AND READY TO WORK!!! CALL AMERICAN TRUCK CENTERS FOR...

Condition	Used
Usage	538,858 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	80"
Suspension	Flex Air
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	MO11032
MLS Number	14064737
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

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2023 Freightliner Cascadia 126 Sleeper Semi Truck - 76" Raised Roof Sleeper, Detroit 450HP, 12 Speed Dt12 Automatic

$109,950 USD

2023 Freightliner Cascadia 126 Sleeper – Detroit DD15 450 HP, DT12 Automatic, 76” Raised Roof Double Bunk, 191K Miles This 2023 Freightliner Cascadia 126 is a well-maintained, Class 8...

Condition	Used
Usage	191,443 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 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
Stock Number	MO11105
MLS Number	14109181
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

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

Price Drop $42,950 USD

This fully loaded 2022 Kenworth T680 combines modern aerodynamics, cutting-edge safety features, and driver comfort to deliver a superior over-the-road experience. Equipped with an...

Condition	Used
Usage	14,631 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Automated
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	CO10797
MLS Number	13899963
Category	Sleeper Semi Trucks
Last Updated	2/8/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

(844) 385-___ SHOW
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2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Condo Sleeper, 455HP, 12 Speed Automatic

Newly Listed

$47,416 USD

Condition	Used
Usage	687,485 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15 GHG'17 455/1650
Transmission	12 Speed Automatic
Sleeper Type	Condo Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	878761
MLS Number	14131335
Category	Sleeper Semi Trucks
Last Updated	2/8/2026
Location	Commerce City, CO, US
Sold By	Ryder

2022 International LT Sleeper Semi Truck - 73" Raised Roof Sleeper, Cummins 450HP, 12 Speed Amt

Newly Listed

$54,950 USD

372000 Miles, Engine: CUMMINS X15, 450 HP, Fuel Type: Diesel, 12 Speed AMT Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Raised Roof Sleeper, Sleeper Size: 73, Wheels:...

Condition	Used
Usage	372,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	CO11131
MLS Number	14129505
Category	Sleeper Semi Trucks
Last Updated	2/6/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

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

Newly Listed

$48,750 USD

Used 2023 International LT625 Sleeper Semi Truck with 73" integral sleeper, Cummins X15 450HP diesel engine, 12-speed Eaton automatic transmission, tandem rear axle, and 280-gallon fuel...

Condition	Used
Usage	600,911 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	UPP236398
MLS Number	14129395
Category	Sleeper Semi Trucks
Last Updated	2/8/2026
Location	Greeley, CO, US
Sold By	Penske Used Trucks

2023 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 475HP, 12 Speed Automatic

Recently Updated

$67,250 USD

Used 2023 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 467,344 miles, 475 HP DD15AT diesel engine, 72" integral sleeper, 12-speed Detroit automatic transmission, tandem rear axle....

Condition	Used
Usage	467,346 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	475 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	461964
MLS Number	13512550
Category	Sleeper Semi Trucks
Last Updated	2/6/2026
Location	Aurora, CO, US
Sold By	Penske Used Trucks

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$47,000 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 674,624 miles, 455 HP DD15AT diesel engine, 72" integral sleeper, 12-speed automatic Detroit transmission, tandem rear axle,...

Condition	Used
Usage	674,626 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	386387
MLS Number	14015395
Category	Sleeper Semi Trucks
Last Updated	2/7/2026
Location	Aurora, CO, US
Sold By	Penske Used Trucks

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 475HP, 13 Speed Manual

Recently Updated

$69,500 USD

Used 2020 Freightliner Cascadia 126 Sleeper Semi Truck with 72" integral sleeper, 475HP DD15AT diesel engine, 13-speed Eaton manual transmission, tandem rear axle, air ride suspension, and...

Condition	Used
Usage	456,585 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	475 HP
Engine Model	DD15AT
Transmission	13 Speed Manual
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.23 ratio
Stock Number	349201
MLS Number	14024757
Category	Sleeper Semi Trucks
Last Updated	2/7/2026
Location	Greeley, CO, US
Sold By	Penske Used Trucks

2019 Freightliner Cascadia 125 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$50,000 USD

Used 2019 Freightliner Cascadia 125 Sleeper Semi Truck, 472,339 miles, 455HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle, air ride...

Condition	Used
Usage	472,339 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	226789
MLS Number	14051521
Category	Sleeper Semi Trucks
Last Updated	2/8/2026
Location	Greeley, CO, US
Sold By	Penske Used Trucks

2024 Kenworth T680 Sleeper Semi Truck - 52" Mid Roof Sleeper, Paccar 510HP, 12 Speed Endurant Automatic

Recently Updated

$89,950 USD

This 2024 Kenworth T680 comes with a remaining 6 year / 600,000 mile PACCAR Premium Warranty, giving owner operators and fleets rare long-term protection on the engine and aftertreatment...

Condition	Used
Usage	120,165 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	52"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.25 ratio
Stock Number	CO11033
MLS Number	14053871
Category	Sleeper Semi Trucks
Last Updated	2/5/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Price Drop $63,000 USD

Used 2020 Freightliner Cascadia 126 Sleeper Semi Truck for sale with 381,884 miles, 455HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, 13,300 lb front...

Condition	Used
Usage	381,885 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	342002
MLS Number	13854039
Category	Sleeper Semi Trucks
Last Updated	2/8/2026
Location	Greeley, CO, US
Sold By	Penske Used Trucks

2020 International LT Sleeper Semi Truck - 72" Raised Roof Sleeper, Cummins 400HP, 12 Speed Automatic

Price Drop $32,950 USD

For Sale: 2020 International LT Sleeper Equipped with a 400hp Cummins X15, 12-Speed Automatic Transmission, 72” Raised Roof Double Bunk Sleeper, Dual Sleeper Windows, Hood Mirrors, Full...

Condition	Used
Usage	476,010 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	CO10785
MLS Number	13852500
Category	Sleeper Semi Trucks
Last Updated	2/5/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

2022 Kenworth T880 Sleeper Semi Truck - 76" Mid Roof Sleeper, Cummins 450HP, 12 Speed Endurant Amt

Price Drop $57,950 USD

Take a look at this 2022 Kenworth T880 powered by a Cummins X15 rated at 450 HP and paired with an Endurant 12-speed automated transmission with a 2.85 ratio, set up for efficient highway...

Condition	Used
Usage	484,747 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	Mid Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	CO10775
MLS Number	13852453
Category	Sleeper Semi Trucks
Last Updated	2/6/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

2022 Kenworth T880 Sleeper Semi Truck - 76" Mid Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

Price Drop $57,950 USD

Take a look at this 2022 Kenworth T880 powered by a Cummins X15 rated at 450 HP and paired with an Endurant 12-speed automated transmission with a 2.85 ratio, set up for efficient highway...

Condition	Used
Usage	486,123 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	Mid Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	CO10782
MLS Number	13852450
Category	Sleeper Semi Trucks
Last Updated	2/6/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

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

Recently Updated

$39,950 USD

NEW BRAKES AND ROTORS!!! Walmart Fleet Maintained!! APU! Engine Brakes! Fridge! Inverter! 450HP Cummins! Automatic! Sliding 5th Wheel! Double Bunk! Heated Mirrors! USB Ports! Collision...

Condition	Used
Usage	485,274 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	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	CO10758
MLS Number	13825420
Category	Sleeper Semi Trucks
Last Updated	2/5/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

(844) 385-___ SHOW
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2019 Freightliner Cascadia 126 Sleeper Semi Truck - 70" Condo Sleeper, 505HP, 12 Speed Automatic

Newly Listed

$68,719 USD

Condition	Used
Usage	407,690 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	DD15 GHG'17 505/1625
Transmission	12 Speed Automatic
Sleeper Type	Condo Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.36 ratio
Stock Number	806051
MLS Number	14126084
Category	Sleeper Semi Trucks
Last Updated	2/4/2026
Location	Commerce City, CO, US
Sold By	Ryder

(844) 385-___ SHOW
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2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Condo Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$61,435 USD

Condition	Used
Usage	446,284 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15 GHG'17 455/1650
Transmission	12 Speed Automatic
Sleeper Type	Condo Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.85 ratio
Stock Number	274322
MLS Number	13970592
Category	Sleeper Semi Trucks
Last Updated	2/5/2026
Location	Commerce City, CO, US
Sold By	Ryder

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

Recently Updated

$57,500 USD

Used 2023 International LT625 Sleeper Semi Truck for sale, 530,000 miles, Cummins X15 diesel engine, 450 HP, 12-speed Eaton automatic transmission, 73" integral sleeper, tandem rear axle,...

Condition	Used
Usage	530,000 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	UPS235775
MLS Number	14102300
Category	Sleeper Semi Trucks
Last Updated	2/5/2026
Location	Greeley, CO, US
Sold By	Penske Used Trucks

2019 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

Price Drop $38,750 USD

Used 2019 International LT625 Sleeper Semi Truck, 442,821 miles, 450 HP Cummins X15 diesel engine, 12-speed Eaton automatic transmission, 73" integral sleeper, 13200 lbs front axle, 40000...

Condition	Used
Usage	442,821 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	332688
MLS Number	14013536
Category	Sleeper Semi Trucks
Last Updated	2/8/2026
Location	Greeley, CO, US
Sold By	Penske Used Trucks

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

$72,750 USD

Used 2022 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 460,751 miles, 455HP DD15AT diesel engine, 72" integral sleeper, 12-speed Detroit automatic transmission, tandem rear axle,...

Condition	Used
Usage	461,273 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	385123
MLS Number	13905601
Category	Sleeper Semi Trucks
Last Updated	2/7/2026
Location	Greeley, CO, US
Sold By	Penske Used Trucks

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Amt

$74,950 USD

2022 Freightliner Cascadia – Fully Loaded Warranty Covered This 2022 Freightliner Cascadia is a dependable, driver-friendly truck built for efficiency, comfort, and long-haul performance....

Condition	Used
Usage	11,000 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
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	CO11110
MLS Number	14120271
Category	Sleeper Semi Trucks
Last Updated	2/7/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

2021 Kenworth W990 Sleeper Semi Truck - 76" Mid Roof Sleeper, Cummins 500HP, 12 Speed Endurant Automatic

$84,950 USD

NEW PICTURES COMING. This 2021 Kenworth W990 sleeper truck offers premium features and a strong spec for owner-operators and fleets alike. Highlighted upgrades include chicken lights, a full...

Condition	Used
Usage	426,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.87 ratio
Stock Number	CO11128
MLS Number	14120116
Category	Sleeper Semi Trucks
Last Updated	1/31/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

2021 Kenworth W990 Sleeper Semi Truck - 76" Mid Roof Sleeper, Cummins 500HP, 12 Speed Endurant Amt

$84,950 USD

NEW PICTURES COMING. This 2021 Kenworth W990 sleeper truck is well-optioned and built for long-haul efficiency and driver comfort. Standout features include chicken lights, a full gauge...

Condition	Used
Usage	480,000 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	Mid Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.87 ratio
Stock Number	CO11127
MLS Number	14120111
Category	Sleeper Semi Trucks
Last Updated	1/31/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks