Freightliner 12 Speed Sleeper Semi Trucks For Sale in United States

(855) 942-___ SHOW
NUMBERCall Seller

2020 Freightliner Cascadia 125 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

$37,500 USD

Used 2020 Freightliner Cascadia 125 Sleeper Semi Truck, 455HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, tandem rear axle, air ride suspension. See...

Condition	Used
Usage	689,842 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	278290
MLS Number	14098950
Category	Sleeper Semi Trucks
Last Updated	2/1/2026
Location	Chattanooga, TN, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
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2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

$62,000 USD

Used 2020 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 494,190 miles, 455 HP DD15AT diesel engine, 72" integral sleeper, 12-speed automatic Detroit transmission, tandem rear axle,...

Condition	Used
Usage	494,190 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	276501
MLS Number	14098940
Category	Sleeper Semi Trucks
Last Updated	1/25/2026
Location	Fontana, CA, US
Sold By	Penske Used Trucks

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Detroit 455HP, 12 Speed Dt12 Automatic

Price Drop $50,995 USD

2020 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 531,683 MILES, FLEET MAINTAINED MULTIPLE UNITS AVAILABLE FINANCING AVAILABLE FOR ALL CREDIT TYPES,...

Condition	Used
Usage	531,683 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	0722
MLS Number	13853338
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

Price Drop $49,995 USD

2020 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 539,015 MILES, FLEET MAINTAINED MULTIPLE UNITS AVAILABLE FINANCING AVAILABLE FOR ALL CREDIT TYPES,...

Condition	Used
Usage	539,015 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 2.85 ratio
Stock Number	P8724
MLS Number	13853337
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Price Drop $46,995 USD

2019 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 520,676 MILES, FLEET MAINTAINED MULTIPLE UNITS AVAILABLE FINANCING AVAILABLE FOR ALL CREDIT TYPES,...

Condition	Used
Usage	520,676 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	0144
MLS Number	13809611
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Price Drop $76,995 USD

DETROIT DD15 / AUTOMATIC TRANMISSION / FLEET MAINTAINED / FINANCING AVAILABLE 2021 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 357,184 MILES, FLEET...

Condition	Used
Usage	357,184 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	6937
MLS Number	13794524
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

Price Drop $55,995 USD

DETROIT DD15 / AUTOMATIC TRANSMISSION / FLEET MAINTAINED / FINANCING AVAILABLE 2020 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 473,442 MILES, FLEET...

Condition	Used
Usage	473,442 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	0881
MLS Number	13712053
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2021 Freightliner Cascadia 126 Sleeper Semi Truck - Mid Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

$64,995 USD

DETROIT DD15 / AUTOMATIC TRANSMISSION / APU / PTO / FLEET MAINTAINED / FINANCING AVAILABLE 2021 FREIGHTLINER CASCADIA 126, MID-ROOF XT SLEEPER, 428,111 MILES, DETORIT DD15 ENGINE, DETROIT...

Condition	Used
Usage	428,111 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	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	5778
MLS Number	13688194
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Price Drop $69,995 USD

DETROIT DD15 / AUTOMATIC TRANSMISSION / FLEET MAINTAINED / FINANCING AVAILABLE 2021 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 389,395 MILES, FLEET...

Condition	Used
Usage	389,395 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	7138
MLS Number	13688191
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Price Drop $70,995 USD

DETROIT DD15 / AUTOMATIC TRANSMISSION / FLEET MAINTAINED / FINANCING AVAILABLE 2021 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 370,584 MILES, FLEET...

Condition	Used
Usage	370,584 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	7098
MLS Number	13688190
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

(844) 216-___ SHOW
NUMBERCall Seller

2018 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit, 12 Speed Dt12 Amt

$32,000 USD

696,700 Miles, Detroit DD15, 455 HP, DT12 Automated, Double Bunk, 3.08 Ratio, 13k Fronts, 40k Rears, Collision Mitigation, APU, Super Singles, Air Slide 5th Wheel, Air Ride, Aluminum Wheels,...

Condition	Used
Usage	696,733 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 3.08 ratio
Stock Number	KA5264
MLS Number	13644782
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

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

Price Drop $62,995 USD

DETROIT DD15 / AUTOMATIC TRANSMISSION / FLEET MAINTAINED / FINANCING AVAILABLE 2021 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 456,101 MILES, FLEET...

Condition	Used
Usage	456,101 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	3250
MLS Number	13633975
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2021 Freightliner Cascadia 126 Sleeper Semi Truck

Price Drop $64,995 USD

DETROIT DD15 / AUTOMATIC TRANSMISSION / FLEET MAINTAINED / FINANCING AVAILABLE 2021 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 440,137 MILES, FLEET...

Condition	Used
Usage	440,137 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	3259
MLS Number	13612314
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2018 Freightliner Cascadia 126 Sleeper Semi Truck

Price Drop $36,995 USD

DETROIT DD15 / AUTOMATIC TRANSMISSION / FLEET MAINTAINED / FINANCING AVAILABLE 2018 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 678,524 MILES, FLEET...

Condition	Used
Usage	678,524 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	0741
MLS Number	13612308
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

(844) 216-___ SHOW
NUMBERCall Seller

2019 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 455HP, Automatic

$37,900 USD

72 Inch Raised Roof Sleeper, Upper Bunk, 634,000 Approximate Miles, ECM Reads 634,000 Miles, Detroit DD15 Engine, 505 H.P Engine Brake, DT12 Transmission, (Automatic), 40,000 Lb, Rear Ends 3...

Condition	Used
Usage	634,000 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	KW7631
MLS Number	13586624
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

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

Price Drop $91,995 USD

GEN5 DETROIT DD15 / DT12 AUTOMATIC TRANSMISSION / APU / REMAINING WARRANTY / FINANCING AVAILABLE 2023 FREIGHTLINER CASCADIA 126, 72 INCH MID-ROOF XT SLEEPER, 338,539 MILES, DETROIT DD15...

Condition	Used
Usage	338,539 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	425 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	4704
MLS Number	13482068
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Price Drop $68,995 USD

DETROIT DD15 / DT12 AUTOMATIC TRANSMISSION / FLEET MAINTAINED / FINANCING AVAILABLE 2021 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 400,566 MILES, FLEET...

Condition	Used
Usage	400,566 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
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	4526
MLS Number	13437039
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Price Drop $70,995 USD

DETROIT DD15 / DT12 AUTOMATIC TRANSMISSION / FLEET MAINTAINED / FINANCING AVAILABLE 2021 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 376,534 MILES, FLEET...

Condition	Used
Usage	376,534 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
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	4979
MLS Number	13437037
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Price Drop $59,995 USD

DETROIT DD15 / DETROIT DT12 AUTOMATIC TRANSMISSION / FLEET MAINTAINED / FINANCING AVAILABLE 2021 FREIGHTLINER CASCADIA, DETROIT DD15, 455 HP, DETROIT DT12 AUTOMATIC TRANSMISSION, 435,030...

Condition	Used
Usage	435,030 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	Mid Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.28 ratio
Stock Number	8162
MLS Number	13436982
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Price Drop $70,995 USD

DETROIT DD15 / DETROIT DT12 AUTOMATIC / FINANCING AVAILABLE / FLEET MAINTAINED 2021 FREIGHTLINER CASCADIA 126, DETROIT DD15 ENGINE, 455 HP, DETROIT DT12 AUTOMATIC TRANSMISSION, 369,598...

Condition	Used
Usage	369,598 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	8028
MLS Number	13436849
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Price Drop $71,995 USD

DETROIT DD15 / DETROIT DT12 AUTOMATIC / FINANCING AVAILABLE / FLEET MAINTAINED 2021 FREIGHTLINER CASCADIA 126, DETROIT DD15 ENGINE, 455 HP, DETROIT DT12 AUTOMATIC TRANSMISSION, 366,068...

Condition	Used
Usage	366,068 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	0613
MLS Number	13436837
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Detroit 455HP, 12 Speed Dt12 Automatic

Price Drop $57,995 USD

2020 FREIGHTLINER CASCADIA 126, DETROIT DD15, DETROIT DT12 AUTOMATIC TRANSMISSION, 453,524 MI, FLEET MAINTAINED FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON APPROVED...

Condition	Used
Usage	453,524 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	0739
MLS Number	14029246
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

(844) 385-___ SHOW
NUMBERCall Seller

2019 Freightliner Cascadia 126 Sleeper Semi Truck - 73" Condo Sleeper, 455HP, 12 Speed Automatic

$48,713 USD

Condition	Used
Usage	642,737 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15 GHG'17 455/1650
Transmission	12 Speed
Sleeper Type	Condo Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	861219
MLS Number	14097192
Category	Sleeper Semi Trucks
Last Updated	1/18/2026
Location	Atlanta, GA, US
Sold By	Ryder

(844) 385-___ SHOW
NUMBERCall Seller

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

$52,884 USD

Condition	Used
Usage	606,857 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	878802
MLS Number	14097189
Category	Sleeper Semi Trucks
Last Updated	1/18/2026
Location	Bolingbrook, IL, US
Sold By	Ryder