Freightliner 12 Speed Sleeper Semi Trucks For Sale by Dealerships

25 0

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

$55,750 USD

SPECIAL PROMOTION - Original Price: $58750.00 Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We...

Condition	Used
Usage	618,300 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	334537
MLS Number	13557309
Category	Sleeper Semi Trucks
Last Updated	9/27/2025
Location	Fontana, CA, US
Sold By	Penske Used Trucks

5 0

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

$41,900 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	7/9/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

33 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck

$42,500 USD

714,510 Miles, DD15 Detroit, 400 HP, DT12 Automated, 2.16 Ratio, 226" WB, 12500# Fronts, 40,000# Rears, Double Bunk Sleeper, Bluetooth, Inter-Axle Lock, Air Suspension Dump, Air Slide 5th...

Condition	Used
Usage	714,510 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
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	2.16 ratio
Stock Number	MA9678
MLS Number	13463920
Category	Sleeper Semi Trucks
Last Updated	7/9/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

36 3

2021 Freightliner Cascadia 126 Sleeper Semi Truck

$59,000 USD

574k Miles, DD15 Detroit, 400 HP (upgradeable to 505), DT12 Automated, Fleet Maintained, Double Bunk Condo, Fridge, Collision Mitigation System, 225" WB, 2.85 Ratio, 12,500 Fronts, 40,000...

Condition	Used
Usage	574,428 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Engine Model	Detroit DD15
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	MA9747
MLS Number	13463917
Category	Sleeper Semi Trucks
Last Updated	7/9/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

26 1

2021 Freightliner Cascadia 126 Sleeper Semi Truck

$46,000 USD

679,793 Miles, DD15 Detroit, DT12 Automatic, Fleet Maintained, Double Bunk Sleeper, Fridge, Collision Mitigation System, Bluetooth, Inter-Axle Lock, Air Slide, Air Suspension Dump, Power...

Condition	Used
Usage	679,793 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Detroit DD15
Drivetrain	6x2
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	MA9737
MLS Number	13463913
Category	Sleeper Semi Trucks
Last Updated	7/9/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

23 0

2019 Freightliner Cascadia 125 Sleeper Semi Truck - 72" Integral Sleeper, 400HP, 12 Speed Automatic

$40,000 USD

Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing; extended warranties;...

Condition	Used
Usage	656,393 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 2.27 ratio
Stock Number	718346
MLS Number	13688335
Category	Sleeper Semi Trucks
Last Updated	9/18/2025
Location	Greensboro, NC, US
Sold By	Penske Used Trucks

23 0

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

Price Drop

$57,250 USD

MANAGERS SPECIAL Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing;...

Condition	Used
Usage	515,514 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	373262
MLS Number	13687994
Category	Sleeper Semi Trucks
Last Updated	10/11/2025
Location	Wilmington, OH, US
Sold By	Penske Used Trucks

23 0

2019 Freightliner Cascadia 113 Sleeper Semi Truck - 48" Integral Sleeper, 410HP, 12 Speed Automatic

Price Drop

$40,000 USD

SPECIAL PROMOTION - Original Price: $45000.00 Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We...

Condition	Used
Usage	542,259 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	410 HP
Engine Model	DD13
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	48"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.23 ratio
Stock Number	M218018
MLS Number	13687488
Category	Sleeper Semi Trucks
Last Updated	10/10/2025
Location	Guilderland Center, NY, US
Sold By	Penske Used Trucks

23 0

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

$54,750 USD

MANAGERS SPECIAL Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing;...

Condition	Used
Usage	563,658 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 2.64 ratio
Stock Number	420971
MLS Number	13478449
Category	Sleeper Semi Trucks
Last Updated	9/27/2025
Location	East Chicago, IN, US
Sold By	Penske Used Trucks

23 0

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

$54,250 USD

MANAGERS SPECIAL Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing;...

Condition	Used
Usage	573,191 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	255981
MLS Number	13684982
Category	Sleeper Semi Trucks
Last Updated	10/12/2025
Location	Franklin, MA, US
Sold By	Penske Used Trucks

23 0

2019 Freightliner Cascadia 126 Sleeper Semi Truck - 60" Integral Sleeper, 455HP, 12 Speed Automatic

$71,250 USD

MANAGERS SPECIAL Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing;...

Condition	Used
Usage	309,228 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	60"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.42 ratio
Stock Number	254259
MLS Number	13684979
Category	Sleeper Semi Trucks
Last Updated	10/11/2025
Location	Houston, TX, US
Sold By	Penske Used Trucks

(844) 385-___ SHOW
NUMBERCall Seller

10 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 48" Mid Roof Sleeper, 400HP, 12 Speed Automatic

$66,616 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	436,147 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	DD15'14 400/1625
Transmission	12 Speed Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	48"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.15 ratio
Stock Number	239993
MLS Number	13683972
Category	Sleeper Semi Trucks
Last Updated	7/3/2025
Location	Orlando, FL, US
Sold By	Ryder

(844) 385-___ SHOW
NUMBERCall Seller

10 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 70" Condo Sleeper, 12 Speed Automatic

$44,850 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	739,159 Miles
Engine Model	DD15 GHG'21 455/1500
Transmission	12 Speed Automatic
Sleeper Type	Condo Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.85 ratio
Stock Number	519356
MLS Number	13683922
Category	Sleeper Semi Trucks
Last Updated	7/9/2025
Location	Kansas City, MO, US
Sold By	Ryder

15 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 400HP, 12 Speed Automatic

$57,500 USD

SPECIAL PROMOTION - Original Price: $60500.00 Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We...

Condition	Used
Usage	499,859 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 2.27 ratio
Stock Number	718170
MLS Number	13683804
Category	Sleeper Semi Trucks
Last Updated	10/8/2025
Location	Houston, TX, US
Sold By	Penske Used Trucks

28 0

2021 Freightliner Cascadia 126 Single Axle Sleeper Semi Truck - 72" Integral Sleeper, 475HP, 12 Speed Automatic

Price Drop

$43,000 USD

SPECIAL PROMOTION - Original Price: $46000.00 Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We...

Condition	Used
Usage	644,826 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	475 HP
Engine Model	DD15AT
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	379217
MLS Number	13679955
Category	Sleeper Semi Trucks
Last Updated	10/1/2025
Location	New Castle, DE, US
Sold By	Penske Used Trucks

23 0

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

$55,250 USD

MANAGERS SPECIAL Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing;...

Condition	Used
Usage	634,006 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 3.08 ratio
Stock Number	375902
MLS Number	13679922
Category	Sleeper Semi Trucks
Last Updated	10/11/2025
Location	Stockton, CA, US
Sold By	Penske Used Trucks

30 0

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

$83,000 USD

Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing; extended warranties;...

Condition	Used
Usage	363,999 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	EPES21122
MLS Number	13679889
Category	Sleeper Semi Trucks
Last Updated	8/8/2025
Location	Greensboro, NC, US
Sold By	Penske Used Trucks

(855) 910-___ SHOW
NUMBERCall Seller

10 0

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Amt

$64,950 USD

N.A.P. New Style Cascadia, Air Release 5th Wheel, Auto Trans, Espar Bunk Heater, Invertor, Jumper Posts, LED Lights, Fridge, Sliding 5th Wheel, Alum Wheels, Well Maintained Fleet Truck, Oil...

Condition	Used
Usage	492,051 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 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 2.41 ratio
Stock Number	3658
MLS Number	13677848
Category	Sleeper Semi Trucks
Last Updated	7/2/2025
Location	GRANGER, IA, US
Sold By	Barr-Nunn Transportation LLC

23 0

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

Price Drop

$61,000 USD

SPECIAL PROMOTION - Original Price: $66000.00 Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We...

Condition	Used
Usage	502,763 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	344935
MLS Number	13677815
Category	Sleeper Semi Trucks
Last Updated	10/10/2025
Location	Katy, TX, US
Sold By	Penske Used Trucks

28 0

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

$79,250 USD

MANAGERS SPECIAL Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing;...

Condition	Used
Usage	439,108 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	369090
MLS Number	13677675
Category	Sleeper Semi Trucks
Last Updated	10/10/2025
Location	Lacey, WA, US
Sold By	Penske Used Trucks

24 0

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

Price Drop

$54,250 USD

SPECIAL PROMOTION - Original Price: $59250.00 Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We...

Condition	Used
Usage	572,430 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	351774
MLS Number	13677448
Category	Sleeper Semi Trucks
Last Updated	10/10/2025
Location	Houston, MS, US
Sold By	Penske Used Trucks

23 0

2019 Freightliner Cascadia 113 Sleeper Semi Truck - 48" Integral Sleeper, 410HP, 12 Speed Automatic

Price Drop

$43,000 USD

SPECIAL PROMOTION - Original Price: $48000.00 Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We...

Condition	Used
Usage	486,683 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	410 HP
Engine Model	DD13
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	48"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.23 ratio
Stock Number	M218036
MLS Number	13677255
Category	Sleeper Semi Trucks
Last Updated	10/10/2025
Location	Albany, NY, US
Sold By	Penske Used Trucks

28 0

2019 Freightliner Cascadia 125 Sleeper Semi Truck - 72" Integral Sleeper, 450HP, 12 Speed Automatic

$53,000 USD

MANAGERS SPECIAL Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing;...

Condition	Used
Usage	539,981 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 3.23 ratio
Stock Number	305022
MLS Number	13677170
Category	Sleeper Semi Trucks
Last Updated	10/11/2025
Location	Lacey, WA, US
Sold By	Penske Used Trucks

27 0

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

$58,250 USD

MANAGERS SPECIAL Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing;...

Condition	Used
Usage	571,800 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	EPES21095
MLS Number	13674542
Category	Sleeper Semi Trucks
Last Updated	10/10/2025
Location	Kennesaw, GA, US
Sold By	Penske Used Trucks