12 Speed Sleeper Semi Trucks For Sale

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

Price Drop

$46,250 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 635,456 miles, 455 HP DD15AT diesel engine, 72" integral sleeper, 12-speed Detroit automatic transmission, tandem rear axle,...

Condition	Used
Usage	635,456 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	387716
MLS Number	14031547
Category	Sleeper Semi Trucks
Last Updated	12/23/2025
Location	Melrose Park, IL, US
Sold By	Penske Used Trucks

23 0

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

Recently Updated

$55,750 USD

Used 2022 Freightliner Cascadia 126 Sleeper Semi Truck, 455HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, 229" wheelbase, tandem rear axle, 220-gal...

Condition	Used
Usage	611,374 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	394191
MLS Number	14015328
Category	Sleeper Semi Trucks
Last Updated	12/23/2025
Location	East Chicago, IN, US
Sold By	Penske Used Trucks

26 0

2022 Volvo VNL64760 Sleeper Semi Truck - 70" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$77,250 USD

Used 2022 Volvo VNL64760 Sleeper Semi Truck with 455HP D13 diesel engine, 12-speed automatic transmission, 70" integral sleeper, tandem rear axle, air ride suspension, 225-gallon fuel...

Condition	Used
Usage	458,793 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	D13
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	387002
MLS Number	13883349
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Villa Rica, GA, US
Sold By	Penske Used Trucks

23 0

2021 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, 450HP, 12 Speed Automatic

Recently Updated

$32,750 USD

Used 2021 International LT625 Sleeper Semi Truck for sale, 439,853 miles, 450 HP A26 diesel engine, 12-speed Eaton automatic transmission, 73" integral sleeper, tandem rear axle, air ride...

Condition	Used
Usage	439,974 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	A26
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	365649
MLS Number	14014939
Category	Sleeper Semi Trucks
Last Updated	12/23/2025
Location	Montgomery, NY, US
Sold By	Penske Used Trucks

21 0

2021 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, 450HP, 12 Speed Automatic

Price Drop

$39,000 USD

Used 2021 International LT625 Sleeper Semi Truck for sale, 302,064 miles, 450HP A26 diesel engine, 12-speed Eaton automatic transmission, 73" integral sleeper, tandem rear axle, air ride...

Condition	Used
Usage	302,184 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	A26
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	365641
MLS Number	14014936
Category	Sleeper Semi Trucks
Last Updated	12/23/2025
Location	Montgomery, NY, US
Sold By	Penske Used Trucks

26 0

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

Price Drop

$58,000 USD

Used 2022 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 612,353 miles, 72" integral sleeper, 455 HP DD15AT diesel engine, 12-speed automatic Detroit transmission, tandem rear axle,...

Condition	Used
Usage	612,353 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	385348
MLS Number	13415631
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Springfield, MO, US
Sold By	Penske Used Trucks

24 0

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

Newly Listed

$55,750 USD

Used 2022 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 684,823 miles, 72" integral sleeper, 455HP DD15AT engine, 12-speed Detroit automatic transmission, tandem rear axle, air ride...

Condition	Used
Usage	684,823 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	385329
MLS Number	14055784
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Fontana, CA, US
Sold By	Penske Used Trucks

23 0

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

Price Drop

$60,000 USD

Used 2022 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 503,109 miles, 455HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, tandem rear axle....

Condition	Used
Usage	506,082 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	385015
MLS Number	13581814
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Harrisburg, PA, US
Sold By	Penske Used Trucks

23 0

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

Recently Updated

$60,750 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck, 529,779 miles, 455HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle, air ride...

Condition	Used
Usage	546,148 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	334649
MLS Number	13881332
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	La Mirada, CA, US
Sold By	Penske Used Trucks

23 0

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

Recently Updated

$52,250 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 575,201 miles, 455HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, air ride suspension...

Condition	Used
Usage	575,225 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	334592
MLS Number	13879382
Category	Sleeper Semi Trucks
Last Updated	12/23/2025
Location	Braintree, MA, US
Sold By	Penske Used Trucks

25 0

2021 International RH613 Sleeper Semi Truck - 56" Integral Sleeper, 450HP, 12 Speed Automatic

Price Drop

$42,750 USD

Used 2021 International RH613 Sleeper Semi Truck for sale, 228,950 miles, 450HP A26 diesel engine, 12-speed Eaton automatic transmission, 56” integral sleeper, tandem rear axle, air ride...

Condition	Used
Usage	228,957 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	A26
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	56"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	321797
MLS Number	13531347
Category	Sleeper Semi Trucks
Last Updated	12/23/2025
Location	Phoenix, AZ, US
Sold By	Penske Used Trucks

25 0

2021 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

Recently Updated

$40,000 USD

Used 2021 International LT625 Sleeper Semi Truck for sale, 495,911 miles, Cummins X15 diesel engine with 450 HP, 12-speed automatic Eaton transmission, 73" integral sleeper, tandem rear axle...

Condition	Used
Usage	495,911 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 2.80 ratio
Stock Number	321764
MLS Number	13581762
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Cranbury, NJ, US
Sold By	Penske Used Trucks

24 0

2021 Volvo VNL64760 Sleeper Semi Truck - 70" Integral Sleeper, 455HP, 12 Speed Automatic

Price Drop

$51,250 USD

Used 2021 Volvo VNL64760 Sleeper Semi Truck for sale, 560,663 miles, 455HP D13 diesel engine, 12-speed automatic transmission, 70" integral sleeper, tandem rear axle, air ride suspension....

Condition	Used
Usage	560,663 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	D13
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	321032
MLS Number	13385638
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Morristown, TN, US
Sold By	Penske Used Trucks

23 0

2021 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

Price Drop

$37,000 USD

Used 2021 International LT625 Sleeper Semi Truck with 73" Integral Sleeper, Cummins X15 diesel engine, 450 HP, 12-speed Eaton automatic transmission, tandem rear axle, air ride suspension,...

Condition	Used
Usage	543,943 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	375899
MLS Number	13607026
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Mebane, NC, US
Sold By	Penske Used Trucks

25 0

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

Recently Updated

$51,750 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck with 72" integral sleeper, 455HP DD15AT diesel engine, 12-speed automatic Detroit transmission, tandem rear axle, air ride suspension....

Condition	Used
Usage	621,000 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 2.41 ratio
Stock Number	369120
MLS Number	13879370
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Goldsboro, NC, US
Sold By	Penske Used Trucks

24 0

2021 Freightliner Cascadia 126 Single Axle Sleeper Semi Truck - 72" Integral Sleeper, 450HP, 12 Speed Automatic

Price Drop

$58,750 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 379,614 miles, 450 HP DD13 diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, single rear axle,...

Condition	Used
Usage	379,617 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	Single Axle
Rear End	23,000 lb 3.08 ratio
Stock Number	374532
MLS Number	13584209
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Lexington, SC, US
Sold By	Penske Used Trucks

23 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 400HP, 12 Speed Automatic

Price Drop

$69,000 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 438,332 miles, 400HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem air ride...

Condition	Used
Usage	438,332 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 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 2.28 ratio
Stock Number	EPES21249
MLS Number	14014517
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Rockwall, TX, US
Sold By	Penske Used Trucks

23 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 400HP, 12 Speed Automatic

Price Drop

$65,250 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 423,122 miles, 400HP DD15AT diesel engine, 72" integral sleeper, 12-speed Detroit automatic transmission. Heavy duty, tandem...

Condition	Used
Usage	423,122 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 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 2.28 ratio
Stock Number	EPES21241
MLS Number	13717097
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Resaca, GA, US
Sold By	Penske Used Trucks

23 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 400HP, 12 Speed Automatic

Recently Updated

$70,500 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck, 400HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, tandem rear axle, 200-gallon fuel capacity....

Condition	Used
Usage	415,008 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 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 2.28 ratio
Stock Number	EPES21235
MLS Number	13765033
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Rockwall, TX, US
Sold By	Penske Used Trucks

24 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 400HP, 12 Speed Automatic

Recently Updated

$68,000 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 440,810 miles, 400 HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, tandem rear axle....

Condition	Used
Usage	440,811 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 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 2.28 ratio
Stock Number	EPES21218
MLS Number	13865249
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Auburn, ME, US
Sold By	Penske Used Trucks

23 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 400HP, 12 Speed Automatic

Price Drop

$66,250 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck, 459,698 miles, 400HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle, air ride...

Condition	Used
Usage	459,700 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 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 2.28 ratio
Stock Number	EPES21211
MLS Number	13867811
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Rockwall, TX, US
Sold By	Penske Used Trucks

23 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 400HP, 12 Speed Automatic

Recently Updated

$71,250 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 408,202 miles, 400HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, tandem rear axle,...

Condition	Used
Usage	408,202 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 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 2.28 ratio
Stock Number	EPES21209
MLS Number	13779590
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Rockwall, TX, US
Sold By	Penske Used Trucks

27 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 400HP, 12 Speed Automatic

Price Drop

$63,750 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 519,247 miles, 400HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, tandem rear axle,...

Condition	Used
Usage	519,247 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 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 2.28 ratio
Stock Number	EPES21183
MLS Number	14014502
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Rockwall, TX, US
Sold By	Penske Used Trucks

23 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 400HP, 12 Speed Automatic

Recently Updated

$73,250 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 380,503 miles, 400 HP DD15AT engine, 12-speed Detroit automatic transmission, 72" integral air ride sleeper, tandem rear axle...

Condition	Used
Usage	380,503 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 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 2.28 ratio
Stock Number	EPES21147
MLS Number	13765029
Category	Sleeper Semi Trucks
Last Updated	12/24/2025
Location	Rockwall, TX, US
Sold By	Penske Used Trucks