Used 12 Speed Sleeper Semi Trucks For Sale

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

2021 Volvo VNL64T760 Sleeper Semi Truck - D13 425HP, 12 Speed I Shift Automatic

Price Drop $66,995 USD

2021 VOLVO 760, VOLVO D13 ENGINE, AUTOMATIC 12 SPEED, 421,914 MILES, FLEET MAINTAINED, ORIGINAL TIRES, VERY GOOD CONDITION, READY TO WORK FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO...

Condition	Used
Usage	421,914 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	425 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed I Shift Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	3432
MLS Number	13587283
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Recently Updated

$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

2021 Kenworth T680 Sleeper Semi Truck - Cummins 450HP, 12 Speed Automatic

Price Drop $66,995 USD

CUMMINS X15 / AUTOMATIC TRANSMISSION / APU / FLEET MAINTAINED / FINANCING AVAILABLE MULTIPLE UNITS AVAILABLE 2021 KENWORTH T680, CUMMINS X15, AUTOMATIC TRANSMISSION, 442,376 MILES, APU ...

Condition	Used
Usage	442,376 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	5224
MLS Number	13542262
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2021 Kenworth T680 Sleeper Semi Truck - Cummins 450HP, 12 Speed Automatic

Price Drop $69,995 USD

CUMMINS X15 / AUTOMATIC TRANSMISSION / APU / FLEET MAINTAINED / FINANCING AVAILABLE MULTIPLE UNITS AVAILABLE 2021 KENWORTH T680, CUMMINS X15, AUTOMATIC TRANSMISSION, 397,000 MILES, APU ...

Condition	Used
Usage	397,314 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	466024
MLS Number	13542261
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2021 Kenworth T680 Sleeper Semi Truck - Cummins 450HP, 12 Speed Automatic

Price Drop $71,995 USD

CUMMINS X15 / AUTOMATIC TRANSMISSION / APU / FLEET MAINTAINED / FINANCING AVAILABLE MULTIPLE UNITS AVAILABLE 2021 KENWORTH T680, CUMMINS X15, AUTOMATIC TRANSMISSION, 366,946 MILES, APU ...

Condition	Used
Usage	366,946 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	6022
MLS Number	13540152
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2020 Volvo VNL64T760 Sleeper Semi Truck - D13 425HP, 12 Speed I Shift Automatic

Price Drop $54,995 USD

2020 VOLVO VNL 760, VOLVO D13, AUTOMATIC I-SHIFT, 490,965 MILES, GREAT CONDITION, FLEET MAINTAINED FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON APPROVED CREDIT, FIRST...

Condition	Used
Usage	490,965 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	425 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed I Shift Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.47 ratio
Stock Number	242529
MLS Number	13540075
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

2021 Volvo VNL64T760 Sleeper Semi Truck

Price Drop $83,995 USD

2021 VOLVO 760, VOLVO D13 ENGINE, AUTOMATIC 12 SPEED, 291,051 MILES, FLEET MAINTAINED, ORIGINAL TIRES, READY TO WORK FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON...

Condition	Used
Usage	291,051 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	425 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed I Shift Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	2738
MLS Number	13517347
Category	Sleeper Semi Trucks
Last Updated	1/20/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

2022 International LT Sleeper Semi Truck - Raised Roof Sleeper, A26 450HP, 12 Speed Automatic

Price Drop $53,995 USD

2022 INTERNATIONAL LT, 366,656 MILES, NAVISTAR A26, 12 SPEED AUTOMATIC TRANSMISSION, BRAND NEW TIRES 5 YEAR / 500,000 MILE FACTORY WARRANTY REMAINING FINANCING AVAILABLE FOR ALL CREDIT...

Condition	Used
Usage	366,656 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	International A26
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	6953
MLS Number	13436900
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

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

Newly Listed

Contact for price

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 613,200 miles, 455 HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle,...

Condition	Used
Usage	613,200 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	344895
MLS Number	14094256
Category	Sleeper Semi Trucks
Last Updated	1/21/2026
Location	Poplar Bluff, MO, US
Sold By	Penske Used Trucks

(844) 385-___ SHOW
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2019 Freightliner Cascadia 126 Sleeper Semi Truck - 48" Mid Roof Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$45,754 USD

Condition	Used
Usage	620,076 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	Mid Roof Sleeper
Sleeper Size	48"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	868929
MLS Number	13956152
Category	Sleeper Semi Trucks
Last Updated	1/21/2026
Location	Orlando, FL, US
Sold By	Ryder

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

Recently Updated

$53,250 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 547,358 miles, 72" integral sleeper, 455 HP DD15AT diesel engine, 12-speed Detroit automatic transmission, tandem rear axle,...

Condition	Used
Usage	547,359 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	372073
MLS Number	13899597
Category	Sleeper Semi Trucks
Last Updated	1/21/2026
Location	Round Rock, TX, US
Sold By	Penske Used Trucks

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

Recently Updated

$57,250 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 458,986 miles, 455 HP DD15AT diesel engine, 72" integral sleeper, 12-speed automatic Detroit transmission, tandem rear axle,...

Condition	Used
Usage	458,986 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	381571
MLS Number	13520239
Category	Sleeper Semi Trucks
Last Updated	1/21/2026
Location	Greeley, CO, US
Sold By	Penske Used Trucks

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

Recently Updated

$60,250 USD

Used 2021 Volvo VNL64760 Sleeper Semi Truck for sale, 485,020 miles, 455 HP D13 diesel engine, 12-speed automatic transmission, 70" integral sleeper, tandem rear axle, air ride suspension....

Condition	Used
Usage	485,020 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	380253
MLS Number	13698035
Category	Sleeper Semi Trucks
Last Updated	1/21/2026
Location	Anderson, SC, US
Sold By	Penske Used Trucks

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

Recently Updated

$55,500 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 517,172 miles, 455 HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, tandem rear axle,...

Condition	Used
Usage	517,172 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	380856
MLS Number	14014854
Category	Sleeper Semi Trucks
Last Updated	1/21/2026
Location	Indian Trail, NC, US
Sold By	Penske Used Trucks

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

Recently Updated

$52,000 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 592,065 miles, 455HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, tandem rear axle,...

Condition	Used
Usage	614,796 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	380761
MLS Number	13867996
Category	Sleeper Semi Trucks
Last Updated	1/21/2026
Location	Rockwall, TX, US
Sold By	Penske Used Trucks