12 Speed 6x4 Sleeper Semi Trucks For Sale

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18 0

2019 Freightliner Cascadia 125 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

$29,950 USD

First Class 8 Truck Sales is a full-service dealer offering high quality equipment, premium financing options, and an excellent customer experience. Call, click, or stop by and visit us...

Condition	Used
Usage	660,143 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 3.08 ratio
Stock Number	285
MLS Number	13314541
Category	Sleeper Semi Trucks
Last Updated	2/12/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

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19 0

2019 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

$44,950 USD

Ready to hit the road and go to work! First Class 8 Truck Sales is a full-service dealer offering high quality equipment, premium financing options, and an excellent customer experience....

Condition	Used
Usage	570,763 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 3.08 ratio
Stock Number	289
MLS Number	13318782
Category	Sleeper Semi Trucks
Last Updated	2/12/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

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19 0

2019 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

$34,950 USD

First Class 8 Truck Sales is a full-service dealer offering high quality equipment, premium financing options, and an excellent customer experience. Call, click, or stop by and visit us...

Condition	Used
Usage	661,226 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 3.08 ratio
Stock Number	274
MLS Number	13302624
Category	Sleeper Semi Trucks
Last Updated	2/7/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

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17 0

2019 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

$44,950 USD

Ready to hit the road and go to work! First Class 8 Truck Sales is a full-service dealer offering high quality equipment, premium financing options, and an excellent customer experience....

Condition	Used
Usage	663,050 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	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	282
MLS Number	13302520
Category	Sleeper Semi Trucks
Last Updated	2/8/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

(844) 693-___ SHOW
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13 0

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

$66,500 USD

LOW MILES!!!!! CLEAN, and READY! This sleeper is in very good condition. It has the DT12 auto and DD15 Detroit power. Call for more information

Condition	Used
Usage	429,302 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	109092
MLS Number	13178735
Category	Sleeper Semi Trucks
Last Updated	2/12/2025
Location	Louisville, KY, US
Sold By	Boyd Truck Centers

(866) 751-___ SHOW
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26 1

2020 International LT625 Sleeper Semi Truck

$44,977 USD

For Sale: 2020 International LT625 Sleeper – Fully Serviced and Road Ready!, Specifications:, Engine: Cummins X15, Transmission: Eaton Endurant automated, Rear Axle Ratio: 2.85 direct...

Quantity	5
Condition	Used
Usage	502,755 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15, Signature
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Sky Rise Pro Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.85 ratio
Stock Number	1851253
MLS Number	13351288
Category	Sleeper Semi Trucks
Last Updated	2/10/2025
Location	Atlanta, GA, US
Sold By	Rush Truck Centers Atlanta

(888) 493-___ SHOW
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1 0

2017 Kenworth T680 Sleeper Semi Truck - Paccar 455HP, 12 Speed Endurant Amt

2019 Freightliner Cascadia Sleeper Semi Truck XT Midroof 2 Bunks APU Free Warranty

$41,999 USD

2019 Freightliner XT Midroof With 2 Bunks APU

Warranty

Condition	Used
Usage	547,260 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Detroit Detroit Diesel DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Mid Roof XT Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.28 ratio
Stock Number	266609
MLS Number	13252816
Category	Sleeper Semi Trucks
Last Updated	1/14/2025
Location	Bolingbrook, IL, US
Sold By	Arrow Truck Sales - Chicago, IL

(855) 647-___ SHOW
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5 0

2021 Freightliner Cascadia Sleeper Semi Truck - 400HP, Automatic / Quantity 2

$52,500 USD

Quantity	2
Condition	Used
Usage	452,982 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Automatic
Rear Axle	Tri Axle
Stock Number	UJ4916
MLS Number	13175385
Category	Sleeper Semi Trucks
Last Updated	12/22/2024
Location	Crestwood, IL, US
Sold By	Optima Truck & Trailer Sales Inc

(844) 793-___ SHOW
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26 0

2017 Freightliner Cascadia 113 Sleeper Semi Truck - Mid Roof Sleeper, Detroit 450HP, 12 Speed Dt12 Amt

$24,900 USD

2017 Freightliner Cascadia 113 – 1 Owner Fleet Maintained Cascadia! 450hp Detroit DD13 Engine, Detroit DT12 12 Speed Automatic Transmission, Mid Roof Sleeper! These trucks are hard to come...

Condition	Used
Usage	652,005 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.07 ratio
Stock Number	JG0455
MLS Number	13387350
Category	Sleeper Semi Trucks
Last Updated	2/8/2025
Location	Byron Center, MI, US
Sold By	5 Star Truck Sales, Inc

(855) 591-___ SHOW
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24 0

2017 Freightliner Cascadia 113 Sleeper Semi Truck - Detroit 450HP, 12 Speed Dt12 Amt

$19,995 USD

2017 FREIGHTLINER FINANCING AVAILABLE WITH APPROVED CREDIT

Condition	Used
Usage	26,199 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.07 ratio
Stock Number	ST972
MLS Number	12949065
Category	Sleeper Semi Trucks
Last Updated	12/5/2024
Location	EDGEWATER, FL, US
Sold By	Florida Shores Truck Center

(855) 949-___ SHOW
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9 0

2018 Freightliner Cascadia 113 Sleeper Semi Truck - 70" Raised Roof Sleeper, Detroit 450HP, 12 Speed Dt12 Amt

$20,000 USD

nice truck, runs great, very clean, double bunk, power mirrors, heated mirrors, power door locks, power windows, dual air ride seats, differential lock, dump valve, A/S 5th,

Condition	Used
Usage	800,945 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	18DET800CAS
MLS Number	11648785
Category	Sleeper Semi Trucks
Last Updated	9/21/2024
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(833) 801-___ SHOW
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71 0

2022 Freightliner Cascadia 116 Sleeper Semi Truck - Mid Roof Sleeper, Detroit 470HP, 12 Speed Dt12 Amt

$69,500 USD

Excellent Shape ready for work EW4 Freightliner Extended Warranty DD13 Engine, 470HP, 363k Miles, DT12 Transmission, 52500 GVW, Mid Roof Sleeper, Brand New Dual Tires,

Condition	Used
Usage	363,391 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	470 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
MLS Number	13334411
Category	Sleeper Semi Trucks
Last Updated	1/17/2025
Location	Santa Rosa, CA, US
Sold By	Personal Asset Brokerage

(707) 849-___ SHOW
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9 0

2021 Freightliner Cascadia 116 Sleeper Semi Truck - Mid Roof Sleeper, Detroit 470HP, 12 Speed Dt12 Amt

$63,500 USD

Wrap will be taken off - Truck Cab is Metallic Green Truck will have brand new dual drive tires,

Condition	Used
Usage	350,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	470 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
MLS Number	13197745
Category	Sleeper Semi Trucks
Last Updated	10/26/2024
Location	Santa Rosa, CA, US
Sold By	Personal Asset Brokerage

(707) 849-___ SHOW
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21 0

2019 Freightliner Cascadia 125 Sleeper Semi Truck - Mid Roof Sleeper, Detroit 450HP, 12 Speed Dt12 Amt

Newly Listed

$34,900 USD

Fleet Maintained, Stock KD9763, Miles 610,218, DD13, 450 HP, Automatic, APU, Ratio 3.25, WB 240, Collision Mitigation, Dual Air Ride Seats, Tilt/Tele, Cruise, Power Windows/Mirrors/Locks,...

Condition	Used
Usage	610,218 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.25 ratio
Stock Number	KD9763
MLS Number	13409575
Category	Sleeper Semi Trucks
Last Updated	2/20/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

(844) 216-___ SHOW
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9 0

2020 Freightliner Cascadia 125 Sleeper Semi Truck - 68" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

Newly Listed

$41,900 USD

** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, DEF, DETROIT, AUTOMATIC, Se Habla Español! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 7 DAYS A WEEK!!!! Disclaimer:, “All...

Condition	Used
Usage	631,326 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	68"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	S02294-DELIVERY 2 U
MLS Number	13400954
Category	Sleeper Semi Trucks
Last Updated	2/18/2025
Location	Gaffney, SC, US
Sold By	Diamond Truck Sales Inc

(833) 685-___ SHOW
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5 0

2017 Freightliner Cascadia 125 Sleeper Semi Truck - 70" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Amt

Newly Listed

$13,000 USD

GREAT RUNNING TRUCK, CLEAN SHAPE, AIR SEATS, DOUBLE BUNK, DIFFERENTIAL LOCK, A/S 5TH, SUSPENSION GAUGE, POWER WINDOWS, POWER MIRRORS, HEATED MIRRORS, TILT/TELE! *HIGH MILEAGE TRUCK BUT RUNS...

Condition	Used
Usage	1,294,274 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	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.41 ratio
Stock Number	17DET129CAS
MLS Number	13398764
Category	Sleeper Semi Trucks
Last Updated	2/14/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(833) 801-___ SHOW
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0 0

2019 Freightliner Cascadia 125 Sleeper Semi Truck - Mid Roof Sleeper, Detroit 450HP, 12 Speed Smart Advantage Automatic

$31,900 USD

** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** AUTOMATIC!! DEF, ENGINE BRAKES, SLIDING 5TH WHEEL!! Se Habla Español! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 7 DAYS A WEEK!!!!...

Condition	Used
Usage	760,776 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Drivetrain	6x4
Transmission	12 Speed Smart Advantage Automatic
Sleeper Type	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.25 ratio
Stock Number	N14825-DELIVERY 2 U
MLS Number	13393688
Category	Sleeper Semi Trucks
Last Updated	2/14/2025
Location	Turlock, CA, US
Sold By	Diamond Truck Sales Inc

(855) 717-___ SHOW
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10 0

2018 Freightliner Cascadia 125 Sleeper Semi Truck - 65" Mid Roof Sleeper, Detroit 450HP, 12 Speed Dt12 Amt

$24,000 USD

GOOD TRUCK, RUNS EXCELLENT, LOW MILES, DUAL AIR RIDE SEATS, DIFFERENTIAL LOCK, DUMP VALVE, SLIDING 5TH WHEEL, POWER WINDOWS, POWER MIRRORS, HEATED MIRRORS, SUSPENSION GAUGE, POWER DOOR LOCKS...

Condition	Used
Usage	492,885 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	65"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	18DET492XTCAS
MLS Number	13385744
Category	Sleeper Semi Trucks
Last Updated	2/14/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(833) 801-___ SHOW
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19 0

2019 Freightliner Cascadia 125 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

$26,550 USD

First Class 8 Truck Sales is a full-service dealer offering high quality equipment, premium financing options, and an excellent customer experience. Call, click, or stop by and visit us...

Condition	Used
Usage	733,919 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 3.08 ratio
Stock Number	290
MLS Number	13334154
Category	Sleeper Semi Trucks
Last Updated	1/17/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

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5 0

2017 Freightliner Cascadia 125 Sleeper Semi Truck - 75" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Amt

$16,000 USD

VERY NICE TRUCK, FLEET MAINTAINED! RUNS AND DRIVES EXCELLENT! air seats, power windows, power door locks, power mirrors, A/S 5th, differential lock!,

Condition	Used
Usage	859,707 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	75"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	17DET859CAS
MLS Number	13307633
Category	Sleeper Semi Trucks
Last Updated	1/12/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(833) 801-___ SHOW
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26 0

2016 Freightliner Cascadia 125 Sleeper Semi Truck - Detroit 455HP

$26,900 USD

2016 Freightliner Sleeper, low mileage for the year,, stock: 247965, transmodel: DT12, engine type: DD15, dualbreathers: 0, dualexhaust: 0,

Condition	Used
Usage	669,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed
Rear Axle	Tandem Axle
Stock Number	247965
MLS Number	13258097
Category	Sleeper Semi Trucks
Last Updated	1/3/2025
Location	Tampa, FL, US
Sold By	Southport Truck Group

(833) 986-___ SHOW
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38 0

2018 Freightliner Cascadia 125 Sleeper Semi Truck - 60" Mid Roof Sleeper, Detroit 435HP, 12 Speed Dt12 Amt

$29,000 USD

Detroit 435 hp, DT12 Automated 12 speed, Mid Roof Sleeper, Aluminum wheels,

Condition	Used
Usage	624,132 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	435 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	60"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	1950
MLS Number	13250257
Category	Sleeper Semi Trucks
Last Updated	1/27/2025
Location	Rhome, TX, US
Sold By	Jordan Truck Sales of Texas, LLC

(855) 489-___ SHOW
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15 0

2017 Freightliner Cascadia 125 Sleeper Semi Truck - Mid Roof Sleeper, Detroit, Automatic

$18,750 USD

If interested please call! Stock#: 14248 Located in Caddo Mills, TX (Just an hour east of downtown Dallas) Ask about our 5% Military/First Responder Discount (Only on select equipment)...

Condition	Used
Usage	801,065 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD13
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	14248
MLS Number	13215448
Category	Sleeper Semi Trucks
Last Updated	1/30/2025
Location	Caddo Mills, TX, US
Sold By	Roy's Trucks and Equipment Inc