2021 Freightliner Cascadia 126 Sleeper Semi Trucks For Sale

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

Newly Listed

$56,900 USD

574,690 Miles, DD15 Detroit Reman Engine, 400 HP (upgradeable to 505), DT12 Automated, Fleet Maintained, Super Clean, Double Bunk Condo, Fridge, Collision Mitigation System, 225" WB, 2.85...

Condition	Used
Usage	574,428 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
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 2.85 ratio
Stock Number	MA9747
MLS Number	14504880
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Amt

Newly Listed

$38,200 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	40,000 lb 2.16 ratio
Stock Number	MA9678
MLS Number	14504875
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 60" Integral Sleeper, Cummins 450HP, 10 Speed Manual

Recently Updated

$59,500 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck with 558,715 miles, Cummins X15 450HP diesel engine, 10-speed Eaton manual transmission, 60" integral sleeper, tandem rear axle, air...

Condition	Used
Usage	577,070 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	10 Speed Manual
Sleeper Type	Integral Sleeper
Sleeper Size	60"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.23 ratio
Stock Number	382227
MLS Number	14408063
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Mobile, AL, US
Sold By	Penske Used Trucks

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

Recently Updated

$48,250 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck, 750,165 miles, 455 HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, 13,300 lbs front axle,...

Condition	Used
Usage	758,845 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	363866
MLS Number	14430028
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Conyers, GA, US
Sold By	Penske Used Trucks

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

Recently Updated

$63,000 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 592,223 miles, 455HP DD15AT diesel engine, 72" integral sleeper, 12-speed Detroit automatic transmission, tandem rear axle....

Condition	Used
Usage	605,338 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	355335
MLS Number	13635024
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Kansas City, MO, US
Sold By	Penske Used Trucks

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 60" Integral Sleeper, 505HP, 12 Speed Automatic

Recently Updated

$70,500 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 505,768 miles, 505 HP DD15AT diesel engine, 60" integral sleeper, 12-speed Detroit automatic transmission, tandem rear axle,...

Condition	Used
Usage	506,443 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	60"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.25 ratio
Stock Number	375860
MLS Number	14437411
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Fort Worth, TX, US
Sold By	Penske Used Trucks

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

Recently Updated

$76,750 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 362,711 miles, 72" integral sleeper, 455 HP DD15AT diesel engine, 12-speed Detroit automatic transmission, tandem rear axle,...

Condition	Used
Usage	363,528 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	372171
MLS Number	14136837
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Tampa, FL, US
Sold By	Penske Used Trucks

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, Cummins 450HP, 10 Speed Automatic

Newly Listed

$49,000 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 723,631 miles, Cummins X15 diesel engine, 450 HP, 72" integral sleeper, 10-speed Eaton automatic transmission. Check it out.

Condition	Used
Usage	723,631 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	10 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	369470
MLS Number	14504315
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Pensacola, FL, US
Sold By	Penske Used Trucks

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, Cummins 450HP, 10 Speed Automatic

Recently Updated

$49,500 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 710,175 miles, Cummins X15 450HP diesel engine, 10-speed Eaton automatic transmission, 72" integral sleeper, 240-gallon fuel...

Condition	Used
Usage	715,491 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	10 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	369453
MLS Number	14441694
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Kansas City, MO, US
Sold By	Penske Used Trucks

2021 Freightliner Cascadia 126 Sleeper Semi Truck

Recently Updated

$38,200 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	40,000 lb 2.16 ratio
Stock Number	MA9678
MLS Number	13463920
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

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

Newly Listed

$49,788 USD

Condition	Used
Usage	711,386 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	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	298117
MLS Number	14503238
Category	Sleeper Semi Trucks
Last Updated	7/23/2026
Location	Charlotte, NC, US
Sold By	Ryder

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 70" Condo Sleeper, 455HP, 12 Speed Automatic

Newly Listed

$65,597 USD

Condition	Used
Usage	532,250 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	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	220763
MLS Number	14503219
Category	Sleeper Semi Trucks
Last Updated	7/23/2026
Location	Greensboro, NC, US
Sold By	Ryder

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

Newly Listed

$72,995 USD

FINANCING AVAILABLE FOR ALL CREDIT TYPES, ZERO DOWN AVAILABLE ON APPROVED CREDIT, FIRST TIME BUYERS WELCOME, EXTENDED WARRANTIES AVAILABLE, TRADE INS WELCOME, NATIONWIDE DELIVERY AVAILABLE...

Condition	Used
Usage	447,000 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	7078
MLS Number	14503114
Category	Sleeper Semi Trucks
Last Updated	7/23/2026
Location	Fontana, CA, US
Sold By	Fontana Truck Outlet

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

Recently Updated

$77,000 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 358,919 miles, 455HP DD15AT engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle, air ride...

Condition	Used
Usage	381,416 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 3.23 ratio
Stock Number	385904
MLS Number	14159418
Category	Sleeper Semi Trucks
Last Updated	7/23/2026
Location	Cranbury, NJ, US
Sold By	Penske Used Trucks

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 10 Speed Manual

Recently Updated

$47,000 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 676,000 miles, 455HP DD15AT diesel engine, 10-speed Eaton manual transmission, 72" integral sleeper, tandem rear axle,...

Condition	Used
Usage	697,256 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	10 Speed Manual
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	375030
MLS Number	14359950
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Wichita, KS, US
Sold By	Penske Used Trucks

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, Cummins 450HP, 10 Speed Automatic

Recently Updated

$53,250 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck, 450 HP Cummins X15 engine, 10-speed Eaton automatic transmission, 72" integral sleeper, tandem rear axle, air ride suspension, 676,948...

Condition	Used
Usage	683,005 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	10 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	373884
MLS Number	14459204
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Kansas City, MO, US
Sold By	Penske Used Trucks

2021 Freightliner Cascadia 126 Sleeper Semi Truck

Recently Updated

$56,900 USD

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

Condition	Used
Usage	574,428 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
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	7/23/2026
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

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

Recently Updated

$64,051 USD

Condition	Used
Usage	510,157 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	287250
MLS Number	14477168
Category	Sleeper Semi Trucks
Last Updated	7/22/2026
Location	Springfield, MA, US
Sold By	Ryder

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

Recently Updated

$47,245 USD

Condition	Used
Usage	757,524 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15'17 GHG 455/1625
Transmission	12 Speed Automatic
Sleeper Type	Condo Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.16 ratio
Stock Number	508083
MLS Number	14020805
Category	Sleeper Semi Trucks
Last Updated	7/22/2026
Location	Phoenix, AZ, US
Sold By	Ryder

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2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 470HP, 12 Speed Dt12 Automatic

Recently Updated

$72,900 USD

Manufacturer’s Engine Warranty: Balance of Detroit Diesel 6 Year/600,000 EW4 Coverage. In Service: 1/3/2021,

Condition	Used
Usage	9,329 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	470 HP
Engine Model	Detroit DD13
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 2.79 ratio
Stock Number	1751
MLS Number	14453163
Category	Sleeper Semi Trucks
Last Updated	7/22/2026
Location	Fontana, CA, US
Sold By	Yerevan Truck & Equipment Sales

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 60" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$70,000 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck with 455HP DD15AT diesel engine. Features 60" integral sleeper, 12-speed automatic Detroit transmission, tandem rear axle, air ride...

Condition	Used
Usage	476,558 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 3.23 ratio
Stock Number	385902
MLS Number	14284031
Category	Sleeper Semi Trucks
Last Updated	7/23/2026
Location	Cranbury, NJ, US
Sold By	Penske Used Trucks

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 60" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$73,000 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 417,513 miles, 455 HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 60" integral sleeper, tandem rear axle,...

Condition	Used
Usage	438,702 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 3.23 ratio
Stock Number	385901
MLS Number	14233838
Category	Sleeper Semi Trucks
Last Updated	7/23/2026
Location	Cranbury, NJ, US
Sold By	Penske Used Trucks

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

Recently Updated

$69,250 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 343,988 miles, 450HP DD13 diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, single rear axle,...

Condition	Used
Usage	343,992 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	374531
MLS Number	14399142
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Lexington, SC, US
Sold By	Penske Used Trucks

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, Cummins 450HP, 10 Speed Automatic

Recently Updated

$52,750 USD

Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 699,512 miles, 450 HP Cummins X15 diesel engine, 10-speed automatic Eaton transmission, 72" integral sleeper, tandem rear...

Condition	Used
Usage	707,383 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	10 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	369460
MLS Number	14446856
Category	Sleeper Semi Trucks
Last Updated	7/24/2026
Location	Kansas City, MO, US
Sold By	Penske Used Trucks