12 Speed Sleeper Semi Trucks For Sale

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2018 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

$58,999 USD

Brand New Virgin Drive Tires. Great condition and well maintained fleet truck. Ready to make $$$$$. OK Credit, Bad Credit, No Credit, WE WILL GET YOU FINANCED. Please call Adam at ( or...

Condition	Used
Usage	404,625 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
MLS Number	10070531
Category	Sleeper Semi Trucks
Last Updated	3/12/2025
Location	Selma, CA, US
Sold By	Selma Truck Sales

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20 0

2023 Peterbilt 579 Sleeper Semi Truck

Recently Updated

$63,950 USD

Multiple Units Available, Remainder of a 4 year 500k Factory Warranty, Navigation, Disc Brakes ,Full Gauge Package, Fridge, 510hp, 1850 Torque 92 Point Dealer Inspection, Passing Dot ,...

Warranty

Condition	Used
Usage	424,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Condo Sleeper
Sleeper Size	80"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	HP3593
MLS Number	13223593
Category	Sleeper Semi Trucks
Last Updated	3/18/2025
Location	Strafford, MO, US
Sold By	HD Trucks LLC

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34 0

2023 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP

Newly Listed

$116,900 USD

EXT DETROIT EW4 CARB COMPLIANT COVERAGE 60 Months 11/30/Miles, stock: 261173, transmodel: DT12, engine type: DD15, dualbreathers: 0, dualexhaust: 0,

Condition	Used
Usage	291,946 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Drivetrain	6x4
Transmission	12 Speed
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	261173
MLS Number	13451218
Category	Sleeper Semi Trucks
Last Updated	3/16/2025
Location	Tampa, FL, US
Sold By	Southport Truck Group

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34 0

2024 Freightliner Cascadia 126 Sleeper Semi Truck - Detroit 455HP

Recently Updated

$119,900 USD

EW4 warranty 60 month 600k miles 2/14/2028, stock: 260946, transmodel: DT12, engine type: DD15, dualbreathers: 0, dualexhaust: 0,

Condition	Used
Usage	273,151 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit
Drivetrain	6x4
Transmission	12 Speed
Rear Axle	Tandem Axle
Stock Number	260946
MLS Number	13403056
Category	Sleeper Semi Trucks
Last Updated	3/16/2025
Location	Tampa, FL, US
Sold By	Southport Truck Group

28 0

2021 Freightliner T12664ST Sleeper Semi Truck - 72" Integral Sleeper, 505HP, 12 Speed Automatic

Recently Updated

$58,250 USD

SPECIAL PROMOTION - Original Price: $61250.00 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	675,499 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	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	379735
MLS Number	12397129
Category	Sleeper Semi Trucks
Last Updated	3/16/2025
Location	Fort Worth, TX, US
Sold By	Penske Used Trucks

(855) 981-___ SHOW
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7 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

Recently Updated

$30,000 USD

2020 Freightliner Cascadia 126 * Call for Price* Specs:, -Drive: 6x4, -Mileage: 705,031, -Engine: DD15, -All Aluminum Wheels, -Transmission: Automatic, -Tires:22.5LP, -HP:505, -Raised Roof...

Condition	Used
Usage	705,031 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	TNHC20737LAK Web
MLS Number	13385835
Category	Sleeper Semi Trucks
Last Updated	3/15/2025
Location	Lakeland, FL, US
Sold By	Nationwide Haul

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7 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

Recently Updated

$30,000 USD

2020 Freightliner Cascadia 126 * Call for Price* Specs:, -Drive: 6x4, -Mileage: 705,031, -Engine: DD15, -All Aluminum Wheels, -Transmission: Automatic, -Tires:22.5LP, -HP:505, -Raised Rood...

Condition	Used
Usage	705,031 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	TNHC20737LAK
MLS Number	13385834
Category	Sleeper Semi Trucks
Last Updated	3/15/2025
Location	Lakeland, FL, US
Sold By	Nationwide Haul

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69 0

2020 Peterbilt 579 Sleeper Semi Truck - 155" Mid Roof Sleeper, Cummins 500HP, 12 Speed Endurant Automatic

Recently Updated

$114,500 USD

FRESH OVERHAUL!! VERY CLEAN AND MAINTAINED PETERBILT 579 WITH ARI LEGACY CUSTOM 155 INCH SLEEPER, CUMMINS 525HP, 12 SPEED AUTOMATIC, SLIDING 5TH WHEEL, 14,600 FAW, 40,000 RAW, BULL GUARD,...

Condition	Used
Usage	1,078,195 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	525 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	155"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	6904
MLS Number	13367448
Category	Sleeper Semi Trucks
Last Updated	3/18/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

27 0

2019 Freightliner Cascadia 125 Sleeper Semi Truck - 72" Integral Sleeper, 505HP, 12 Speed Automatic

Recently Updated

$50,500 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	538,784 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	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	216098
MLS Number	12910504
Category	Sleeper Semi Trucks
Last Updated	3/18/2025
Location	Parkersburg, WV, US
Sold By	Penske Used Trucks

7 0

2024 Peterbilt 579 Sleeper Semi Truck - 80" Raised Roof Sleeper, Paccar 510HP

Recently Updated

Call for price

On Ground in Eau Claire, PA. New-Peterbilt 579, 80" Ultraloft. MX13 Engine, 510 HP, 12 Speed Automated Transmission, 245" Wheelbase, 1850 Torque, 12,500 Dana Spicer Front Axle, 40,000 Dana...

Condition	New
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed
Sleeper Type	Raised Roof Sleeper
Sleeper Size	80"
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	258115
MLS Number	12172747
Category	Sleeper Semi Trucks
Last Updated	3/15/2025
Location	Eau Claire, PA, US
Sold By	Hunter Truck

8 0

2024 Peterbilt 579 Sleeper Semi Truck - 80" Raised Roof Sleeper, Paccar 380HP

Recently Updated

Call for price

On Ground in Eau Claire, PA. New-Peterbilt 579, 80" Ultraloft. MX13 Engine, 510 HP, 12 Speed Automated Transmission, 245" Wheelbase, 1850 Torque, 12,500 Dana Spicer Front Axle, 40,000 Dana...

Condition	New
Usage	1,582 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed
Sleeper Type	Raised Roof Sleeper
Sleeper Size	80"
Suspension	Air Leaf
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	259271
MLS Number	12159088
Category	Sleeper Semi Trucks
Last Updated	3/15/2025
Location	Eau Claire, PA, US
Sold By	Hunter Truck

7 0

2024 Peterbilt 579 Sleeper Semi Truck - 80" Raised Roof Sleeper, Paccar 380HP

Recently Updated

Call for price

New-Peterbilt 579, 80" Ultraloft. MX13 Engine, 510 HP, 12 Speed Automated Transmission, 245" Wheelbase, 1850 Torque, 12,500 Dana Spicer Front Axle, 40,000 Dana Spicer Rear Axle, 295/75R22.5...

Condition	New
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed
Sleeper Type	Raised Roof Sleeper
Sleeper Size	80"
Suspension	Low Air
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	258114
MLS Number	12159079
Category	Sleeper Semi Trucks
Last Updated	3/15/2025
Location	Eau Claire, PA, US
Sold By	Hunter Truck

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9 1

2020 Western Star 5700XE DC HWY Truck Tractor - Detroit DD13-505HP

Newly Listed

$41,984.47 USD

TANDEM AXLE SLEEPER HIGHWAY TRUCK TRACTOR (unit #01990) Located in St. Paul, AB. Shipping and Financing Available. FEATURES:, ➡ 862,597 km*, ➡ 15,914 hr*, ➡ Detroit DD13-505HP paired...

Condition	Used
Usage	15,914 Hours
Horse Power	505 HP
Engine Model	Detroit DD13
Transmission	12 Speed Automated
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.58 ratio
Stock Number	01990
MLS Number	13449602
Category	Sleeper Semi Trucks
Last Updated	3/17/2025
Location	St. Paul, AB, Canada
Sold By	WeConsign Equip Ltd.

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16 0

2021 Kenworth T680 Sleeper Semi Truck - 76" Mid Roof Sleeper, Paccar 510HP, 12 Speed Endurant Automatic

Newly Listed

$59,900 USD

RECENT LOCAL TRADE, ONE OWNER! 2021 KW T680 WITH A PACCAR MX 13 WITH 510 HP, 12 SPEED AUTOMATIC TRANSMISSION, 3.08 REARS. 76 INCH RAISED ROOF SLEEPER.FINANCING AND EXTENDED WARRANTIES...

Condition	Used
Usage	485,654 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	MJ453163U-RICHMOND
MLS Number	13448870
Category	Sleeper Semi Trucks
Last Updated	3/14/2025
Location	Roanoke, VA, US
Sold By	Truck Enterprises Inc.

23 0

2021 Freightliner T12664ST Sleeper Semi Truck - 72" Integral Sleeper, 505HP, 12 Speed Automatic

Recently Updated

$59,500 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	629,160 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	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	379734
MLS Number	12706795
Category	Sleeper Semi Trucks
Last Updated	3/15/2025
Location	Moberly, MO, US
Sold By	Penske Used Trucks

13 0

2023 Peterbilt 567 Sleeper Semi Truck - 58" Raised Roof Sleeper, Paccar 510HP, 12 Speed Amt

Newly Listed

$99,900 USD

5 UNITS AVAILABLE,

Condition	Used
Usage	164,987 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar MX-13
Transmission	12 Speed Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	58"
Suspension	Pete Low Air Leaf
Rear End	40,000 lb 3.25 ratio
Stock Number	250976
MLS Number	13448657
Category	Sleeper Semi Trucks
Last Updated	3/14/2025
Location	Eau Claire, PA, US
Sold By	Hunter Truck

10 0

2023 Peterbilt 567 Sleeper Semi Truck - 58" Raised Roof Sleeper, Paccar 510HP, 12 Speed Amt

Newly Listed

$99,900 USD

5 UNITS AVAILABLE,

Condition	Used
Usage	172,958 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar MX-13
Transmission	12 Speed Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	58"
Suspension	Pete Low Air Leaf
Rear End	40,000 lb 3.25 ratio
Stock Number	250977
MLS Number	13448640
Category	Sleeper Semi Trucks
Last Updated	3/14/2025
Location	Eau Claire, PA, US
Sold By	Hunter Truck

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16 0

2021 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Paccar 510HP, 12 Speed Automatic

Recently Updated

$59,900 USD

RECENT LOCAL TRADE, ONE OWNER! 2021 KW T680 WITH A PACCAR MX 13 WITH 510 HP, 12 SP AUTOMATIC TRANSMISSION, 3.08 REARS. 76 INCH RAISED ROOF SLEEPER, CALL KEVIN ODENWELDER TO SCHEDULE YOUR...

Condition	Used
Usage	485,654 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	MJ453163U-ROA
MLS Number	13387253
Category	Sleeper Semi Trucks
Last Updated	3/14/2025
Location	Roanoke, VA, US
Sold By	Truck Enterprises Inc.

25 0

2019 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 505HP, 12 Speed Automatic

Recently Updated

$47,500 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	669,244 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	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	234118
MLS Number	13215278
Category	Sleeper Semi Trucks
Last Updated	3/18/2025
Location	Parkersburg, WV, US
Sold By	Penske Used Trucks

(855) 591-___ SHOW
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37 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt

Newly Listed

$44,900 USD

2020 Freightliner Cascadia 126 – 1 Owner, Fleet Maintained New Body Style Cascadia 126! This truck came out of Kentucky! Detroit DD15 Engine, Detroit DT12 Automatic Transmission, Double...

Condition	Used
Usage	528,701 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	2.85 ratio
Stock Number	LP7427
MLS Number	13446925
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Byron Center, MI, US
Sold By	5 Star Truck Sales, Inc

(772) 409-___ SHOW
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28 0

2024 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 500HP, 12 Speed Endurant Amt

Newly Listed

$159,995 USD

Model Year: 2024, Model: T680, Engine: Cummins X15, 500 HP, 1650 lb-ft Torque, Engine Brake, Transmission: Eaton Endurant EEO16F112C, 12-speed, Front Axle: Meritor MFS12E, 12,500 lbs Rear...

Condition	New
Usage	1,104 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	AG 400L
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	RJ347923
MLS Number	13446921
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Fort Pierce, FL, US
Sold By	All Roads Trucks

(888) 680-___ SHOW
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5 0

2022 Peterbilt 389 Sleeper Semi Truck - 70" Flat Top Sleeper, Cummins 525HP, 12 Speed Ultrashift Plus Automatic

Newly Listed

$119,000 USD

****FRESH LOCAL TRADE**** GET IT NOW WITH A FRESH VA STATE INSPECTIONS, OUR KENWORTH USED TRUCK INSPECTION AND A PROFESSIONAL DETAIL. 2022 PETERBILT 389 CUMMINS POWERED X15 WITH 525 HP,...

Condition	Used
Usage	468,125 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	525 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Ultrashift Plus Automatic
Sleeper Type	Flat Top Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	ND789951U/CHESAPEAKE
MLS Number	13446840
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Chesapeake, VA, US
Sold By	Truck Enterprises Inc.

20 0

2020 Western Star 5700XE Sleeper Semi Truck - 82" Integral Sleeper, 505HP, 12 Speed Automatic

Newly Listed

$66,250 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	380,851 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	DD15
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	82"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	4603
MLS Number	13444117
Category	Sleeper Semi Trucks
Last Updated	3/12/2025
Location	Braintree, MA, US
Sold By	Penske Used Trucks

24 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 505HP, 12 Speed Automatic

Newly Listed

$74,000 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	448,457 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	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	360748
MLS Number	13442770
Category	Sleeper Semi Trucks
Last Updated	3/15/2025
Location	West Sacramento, CA, US
Sold By	Penske Used Trucks