Freightliner 12 Speed Automatic Sleeper Semi Trucks For Sale

Featured Item

2023 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

$85,900 USD

Balance of Detroit Diesel 5 Year/500K Mile Major Components (PARTS ONLY) Warranty and 5 Year/750K Mile Basic Transmission Warranty In Service: 09/19/2022, LEAD TRUCK,

Condition	Used
Usage	5,631 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	72"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	1718
MLS Number	14044092
Category	Sleeper Semi Trucks
Last Updated	12/31/2025
Location	Fontana, CA, US
Sold By	Yerevan Truck & Equipment Sales

Featured Item

2024 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

$95,900 USD

Balance of Detroit Diesel 5 Year/500K Mile Major Components (PARTS ONLY) Warranty and 5 Year/750K Mile Basic Transmission Warranty In Service: 03/06/2023,

Condition	Used
Usage	5,326 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	72"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	1714
MLS Number	14044040
Category	Sleeper Semi Trucks
Last Updated	12/31/2025
Location	Fontana, CA, US
Sold By	Yerevan Truck & Equipment Sales

Featured Item

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

$43,000 USD

Condition	Used
Usage	943,871 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15 GHG'21 455/1500
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	569523
MLS Number	14042329
Category	Sleeper Semi Trucks
Last Updated	1/16/2026
Location	Kearny, NJ, US
Sold By	Ryder

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

Recently Updated

$58,500 USD

Used 2022 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 583,998 miles, 455 HP DD15AT Diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle,...

Condition	Used
Usage	584,000 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 3.08 ratio
Stock Number	385547
MLS Number	14014920
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Atlanta, GA, US
Sold By	Penske Used Trucks

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

Recently Updated

$57,000 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 506,864 miles, 455HP DD15AT diesel engine, 72" integral sleeper, 12-speed automatic transmission, tandem rear axle, air ride...

Condition	Used
Usage	506,864 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	334587
MLS Number	14014671
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Parkersburg, WV, US
Sold By	Penske Used Trucks

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

Recently Updated

$36,500 USD

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

Condition	Used
Usage	741,460 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	334540
MLS Number	14030464
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Sellersburg, IN, US
Sold By	Penske Used Trucks

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

Recently Updated

$51,250 USD

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

Condition	Used
Usage	553,344 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	334526
MLS Number	14014661
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Windsor, WI, US
Sold By	Penske Used Trucks

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

Recently Updated

$49,750 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 587,005 miles, 455HP DD15AT diesel engine, 72" integral sleeper, 12-speed Detroit automatic transmission, tandem air ride...

Condition	Used
Usage	587,006 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	334491
MLS Number	13876810
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Piqua, OH, US
Sold By	Penske Used Trucks

2021 Freightliner Cascadia 126 Single Axle Sleeper Semi Truck - 72" Integral Sleeper, 505HP, 12 Speed Automatic

Recently Updated

$44,000 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 598,424 miles, 505HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, single rear axle,...

Condition	Used
Usage	601,508 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Single Axle
Rear End	20,000 lb 3.08 ratio
Stock Number	378639
MLS Number	14069667
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Lancaster, PA, US
Sold By	Penske Used Trucks

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

Recently Updated

$67,500 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 394,399 miles, 400HP DD15AT diesel engine, 72" integral sleeper, 12-speed Detroit automatic transmission, tandem rear axle,...

Condition	Used
Usage	394,476 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	EPES21164
MLS Number	13879368
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Concord, NC, US
Sold By	Penske Used Trucks

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

Recently Updated

$56,250 USD

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

Condition	Used
Usage	524,179 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	EPES21118
MLS Number	13769624
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Charlotte, NC, US
Sold By	Penske Used Trucks

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

Recently Updated

$60,500 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck, 455HP Diesel engine, DD15AT, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle, air ride suspension, 220...

Condition	Used
Usage	480,059 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 2.05 ratio
Stock Number	371800
MLS Number	13881242
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Tuscaloosa, AL, US
Sold By	Penske Used Trucks

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

Recently Updated

$60,250 USD

Used 2020 Freightliner Cascadia 126 Sleeper Semi Truck, 466,208 miles, 455HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle, air ride...

Condition	Used
Usage	466,208 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	360198
MLS Number	14096104
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Anderson, SC, US
Sold By	Penske Used Trucks

(844) 912-___ SHOW
NUMBERCall Seller

2021 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Automatic

Recently Updated

$54,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** AUTOMATIC 12-SPEED!!!!! AIR RIDE, DEF, ENGINE BRAKE Se Habla Español! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 7 DAYS A...

Condition	Used
Usage	542,538 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 2.28 ratio
Stock Number	H02402
MLS Number	13848121
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Houston, TX, US
Sold By	Diamond Truck Sales Inc

(833) 478-___ SHOW
NUMBERCall Seller

2022 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

Recently Updated

Contact for price

2022 Freightliner Cascadia 126 – DD15 / DT12 / Double Bunk, Stock #6806 | 392,287 Miles | DOT Ready Well-keptsouthern, fleet-maintained 2022 Freightliner Cascadia 126built to run...

Condition	Used
Usage	392,287 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	6806
MLS Number	13696225
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Palmetto, GA, US
Sold By	7E Truck Sales, LLC

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

Recently Updated

$72,900 USD

Balance of Detroit Diesel 5 Year/500,000 Mile EW4, and 5 Year/500,000 Mile Major Components (PARTS ONLY) Warranty, In Service: 1/29/2021. SPECIAL!!! - WAS $79,900 NOW $ 72,900, MUST GO,

Condition	Used
Usage	9,778 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	72"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	1691
MLS Number	14043666
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Fontana, CA, US
Sold By	Yerevan Truck & Equipment Sales

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

Recently Updated

$69,900 USD

Balance of Detroit Diesel 5 Year/500,000 Mile EW4, and 5 Year/500,000 Mile Major Components (PARTS ONLY) Warranty, In Service: 1/29/2021. SPECIAL!!! - WAS $75,900 NOW $ 69,900, SPECIAL,...

Condition	Used
Usage	13,298 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	72"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	1690
MLS Number	14043665
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Fontana, CA, US
Sold By	Yerevan Truck & Equipment Sales

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

Recently Updated

$74,900 USD

Manufacturer’s Engine Warranty: Balance of Detroit Diesel 5 Year/500,000 Mile EW4, and 5 Year/500,000 Mile Major Components (PARTS ONLY). Good until 5/28/2026, SPECIAL!!! - WAS $82,900 NOW...

Condition	Used
Usage	440,691 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	1687
MLS Number	14043656
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Fontana, CA, US
Sold By	Yerevan Truck & Equipment Sales

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

Recently Updated

$74,900 USD

Manufacturer’s Engine Warranty: Balance of Detroit Diesel 5 Year/500,000 Mile EW4, and 5 Year/500,000 Mile Major Components (PARTS ONLY). Good until 11/15/2026, SPECIAL!!! - WAS $79,900...

Condition	Used
Usage	410,259 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	1686
MLS Number	14043655
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Fontana, CA, US
Sold By	Yerevan Truck & Equipment Sales

2019 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$29,500 USD

Used 2019 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 964,263 miles, 455HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, tandem rear axle....

Condition	Used
Usage	964,332 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	207955
MLS Number	13871732
Category	Sleeper Semi Trucks
Last Updated	1/24/2026
Location	Bensalem, PA, US
Sold By	Penske Used Trucks

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

Newly Listed

$63,385 USD

Condition	Used
Usage	638,809 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15 GHG'21 455/1500
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	574691
MLS Number	14107619
Category	Sleeper Semi Trucks
Last Updated	1/23/2026
Location	Bolingbrook, IL, US
Sold By	Ryder

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

Newly Listed

$56,027 USD

Condition	Used
Usage	628,154 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	507888
MLS Number	14107615
Category	Sleeper Semi Trucks
Last Updated	1/23/2026
Location	Bolingbrook, IL, US
Sold By	Ryder

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Condo Sleeper, 485HP, 12 Speed Automatic

Newly Listed

$57,631 USD

Condition	Used
Usage	679,526 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	485 HP
Engine Model	DD15 GHG'21 485/1625
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	531453
MLS Number	14107613
Category	Sleeper Semi Trucks
Last Updated	1/23/2026
Location	Bensalem, PA, US
Sold By	Ryder

2023 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$68,500 USD

Used 2023 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 583,941 miles, 455 HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle,...

Condition	Used
Usage	603,386 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	201627
MLS Number	14024998
Category	Sleeper Semi Trucks
Last Updated	1/23/2026
Location	Portland, OR, US
Sold By	Penske Used Trucks