12 Speed Tandem Axle Sleeper Semi Trucks For Sale

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

$47,750 USD

Used 2019 Freightliner Cascadia 125 Sleeper Semi Truck, 491,493 miles, 455HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle, air ride...

Condition	Used
Usage	491,493 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	219456
MLS Number	14013013
Category	Sleeper Semi Trucks
Last Updated	1/27/2026
Location	Birmingham, AL, US
Sold By	Penske Used Trucks

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2019 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 450HP, 12 Speed Automatic

$39,000 USD

Used 2019 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 691,150 miles, 450HP DD13 diesel engine, 12-speed automatic transmission, 72" integral sleeper, tandem rear axle, air ride...

Condition	Used
Usage	691,151 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	DD13
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.41 ratio
Stock Number	215922
MLS Number	13879121
Category	Sleeper Semi Trucks
Last Updated	1/25/2026
Location	Charlotte, NC, US
Sold By	Penske Used Trucks

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

$59,405 USD

Condition	Used
Usage	638,510 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15 GHG'21 455/1500
Transmission	12 Speed
Sleeper Type	Condo Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.85 ratio
Stock Number	570708
MLS Number	14012398
Category	Sleeper Semi Trucks
Last Updated	12/3/2025
Location	Pittsburgh, PA, US
Sold By	Ryder

2022 International LT625 Sleeper Semi Truck - 72" Condo Sleeper, 450HP, 12 Speed Automatic

$48,035 USD

Condition	Used
Usage	617,304 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	X15 GHG'21 450/1700
Transmission	12 Speed
Sleeper Type	Condo Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.85 ratio
Stock Number	554914
MLS Number	14012395
Category	Sleeper Semi Trucks
Last Updated	12/3/2025
Location	Houston, TX, US
Sold By	Ryder

2020 Freightliner Cascadia 116 Sleeper Semi Truck - 48" Mid Roof Sleeper, 450HP, 12 Speed Automatic

$76,614 USD

Condition	Used
Usage	395,120 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	DD13 GHG'17 450/1625
Transmission	12 Speed Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	48"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.25 ratio
Stock Number	274445
MLS Number	14012389
Category	Sleeper Semi Trucks
Last Updated	12/3/2025
Location	Jacksonville, FL, US
Sold By	Ryder

(844) 940-___ SHOW
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2020 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

Contact for price

CALL TIPTON CONQUEST FOR TRUCK AND TRAILER SALES!,

Condition	Used
Usage	548,965 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
Stock Number	7374
MLS Number	14009815
Category	Sleeper Semi Trucks
Last Updated	12/22/2025
Location	Odenville, AL, US
Sold By	Used Truck and Trailer, Inc.

(833) 986-___ SHOW
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2023 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP

$69,900 USD

477843 Miles, Engine: DETROIT DD15, 455 HP, Fuel Type: Diesel, Drive: 6x4, 4 Bag Air Ride Suspension, Sleeper Type: Raised Roof Sleeper, Sleeper Size: 72, Wheel Base: 229, Tandem Rear Axles,...

Condition	Used
Usage	477,843 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.16 ratio
Stock Number	265917
MLS Number	14009772
Category	Sleeper Semi Trucks
Last Updated	12/6/2025
Location	Tampa, FL, US
Sold By	Southport Truck Group

2020 International LT625 Sleeper Semi Truck - 48" Mid Roof Sleeper, 450HP, 12 Speed Automatic

$38,995 USD

Condition	Used
Usage	554,122 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	X15 GHG'17 450/1800
Transmission	12 Speed Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	48"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	252720
MLS Number	13737184
Category	Sleeper Semi Trucks
Last Updated	1/21/2026
Location	Orlando, FL, US
Sold By	Ryder

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

$40,920 USD

Condition	Used
Usage	532,853 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	X15 GHG'17 450/1800
Transmission	12 Speed Automatic
Sleeper Type	Condo Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	240108
MLS Number	13880269
Category	Sleeper Semi Trucks
Last Updated	12/10/2025
Location	Wayland, MI, US
Sold By	Ryder

2021 Freightliner Cascadia 116 Sleeper Semi Truck - Detroit

$51,000 USD

513,120 Miles, DD13 Detroit, 450 HP, DT12 Automated, 3.08 Ratio, 12,500 Fronts, 40,000 Rears, 223" WB, Disc Brakes, Air Slide 5th Wheel, 72" Sleeper - Single Bunk, Fridge, Aluminum Wheels,...

Condition	Used
Usage	513,120 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD13
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 3.08 ratio
Stock Number	MU4540
MLS Number	13788408
Category	Sleeper Semi Trucks
Last Updated	12/6/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2021 Freightliner Cascadia 116 Sleeper Semi Truck - Detroit

$51,500 USD

506k Miles, Detroit DD13, 450 HP, DT12 Automated, Collision Mitigation, Fridge, 223" WB, 3.08 Ratio, 12,500# Fronts, 40,000# Rears, 72" Sleeper, Single Bunk, Fleet Maintained, Air Slide...

Condition	Used
Usage	507,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD13
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 3.08 ratio
Stock Number	MS7882
MLS Number	13788402
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Mid Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt

$41,000 USD

Several Available! Super Clean Units!, 586,814 Miles, DD15 Detroit, 505 HP, Jakes, DT12 Automated, TriPac APU, Bunk Heater, 40,000# Rears, Air Ride, Tilt/Tele, Cruise, 240" WB, Disc Brakes,...

Condition	Used
Usage	586,814 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	LJ3601
MLS Number	13712709
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2019 Freightliner Cascadia 126 Sleeper Semi Truck - 76" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Amt

$41,000 USD

72 Inch Raised Roof Sleeper, Upper Bunk, 606,000 Approximate Miles, ECM Reads 606,000 Miles, Detroit DD15 Engine, 475 H.P., Engine Brake, DT12 Transmission, (Automatic), 40,000 Lb. Rear Ends...

Condition	Used
Usage	606,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	475 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 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	KG4359
MLS Number	13712701
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Amt

$49,000 USD

571,812 Miles, DD15 Detroit, 400 HP bumped up to 505hp, DT12 Automated, APU, Collision Mitigation, 40k Rears, 2.28 Ratio, Air Ride, Deer Guard, Side Fairings, Quarter Fenders, Bunk Heater,...

Condition	Used
Usage	571,812 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 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 2.28 ratio
Stock Number	LH5106
MLS Number	13712690
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Amt

$66,500 USD

72 Inch Raised Roof Sleeper, Upper Bunk, 380,000 Approximate Miles, ECM Reads 380,000 Miles, Detroit DD15 Engine, 475 H.P., Engine Brake, DT12 Transmission, (Automatic), 40,000 Lb. Rear Ends...

Condition	Used
Usage	380,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	475 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 2.79 ratio
Stock Number	MM8004
MLS Number	13712687
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Mid Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt

$46,500 USD

517,147 Miles, Detroit DD15, 505 HP, Jakes, DT12 Automated, 72" Mid-Roof XT Sleeper, Single Bunk, TriPAC APU, Super Singles w/Good Tread, 40k Rears, 3.08 Ratio, Air Ride, Bunk Heater,...

Condition	Used
Usage	517,147 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	LJ3612
MLS Number	13712681
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Mid Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt

$43,500 USD

555,832 Miles, DD15 Detroit, 505 HP, DT12 Automated, 72 Inch Mid-Roof XT Sleeper, Engine Brake, 40k Rears, 3.08 Ratio, Air Ride Suspension, Hydraulic Power Steering, Dual Aluminum Fuel...

Condition	Used
Usage	555,832 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	LJ3610
MLS Number	13712680
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Mid Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt

$47,500 USD

Several Available! Super Clean Units!, 504,571 Miles, DD15 Detroit, 505 HP, Jakes, DT12 Automated, Collision Mitigation System, TriPac APU, Bunk Heater, 40,000# Rears, Air Ride, Tilt/Tele,...

Condition	Used
Usage	504,571 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	LJ3608
MLS Number	13712677
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Mid Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt

$42,500 USD

572,857 Miles, Detroit DD15 Engine, 505 H.P Engine Brake, DT12 Transmission, (Automatic), 72" Mid-Roof XT Sleeper, 40,000 Lb. Rear Ends, 3.08 Ratio, TriPac Auxiliary Power Unit,, Super...

Condition	Used
Usage	572,857 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	LJ3604
MLS Number	13712674
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

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

$42,000 USD

Se habla español, 540k Miles, Many Available!, X15 – 450HP, 12 Speed Eaton Auto, Double bunk Condo, Aluminum wheels, Battery APU, Nice Rubber, Air Slide 5th Wheel, ParkSmart APU, Workstation...

Condition	Used
Usage	540,870 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	399372
MLS Number	13601260
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2021 Freightliner Cascadia 116 Sleeper Semi Truck - Mid Roof Sleeper, Detroit 450HP, 12 Speed Dt12 Amt

$48,000 USD

Fresh DOT, 512,679 Miles, Detroit DD13, 450 HP, 60 Inch Mid-Roof XT Sleeper, Engine Brake, 40,000 Lb. Rear Ends, 2.41 Ratio, Air Ride Suspension, Hydraulic Power Steering, Air Conditioned,...

Condition	Used
Usage	512,679 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.41 ratio
Stock Number	MG1971
MLS Number	13586665
Category	Sleeper Semi Trucks
Last Updated	12/6/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2019 Peterbilt 579 Sleeper Semi Truck - Cummins 450HP, Automatic

$42,000 USD

504,110 Miles, Cummins X15 Engine, 450 H.P Engine Brake, Eaton Automatic Transmission, 80 Inch Ultra-Loft Sleeper, Upper Bunk, 40,000 Lb. Rear Ends, 2.79 Ratio, Air Ride Suspension,...

Condition	Used
Usage	504,110 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	80"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	633351
MLS Number	13586555
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

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

$42,000 USD

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

Condition	Used
Usage	549,500 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	399381
MLS Number	13586523
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

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

$44,500 USD

530,201 Miles, X15 – 450HP, 12 Speed Endurant Automatic, Double bunk, Aluminum wheels, Collision Mitigation System, Battery APU, Jakes, 2.79 Ratio, Disc Brakes, Aluminum Wheels, Air Slide...

Condition	Used
Usage	530,201 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 2.79 ratio
Stock Number	399376
MLS Number	13586522
Category	Sleeper Semi Trucks
Last Updated	12/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC