Used 12 Speed 6x4 Sleeper Semi Trucks with 500-549 HP For Sale in United States

(844) 693-___ SHOW
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2020 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 500HP, 12 Speed Endurant Automatic

$49,900 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	526,094 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	192
MLS Number	12902768
Category	Sleeper Semi Trucks
Last Updated	8/23/2024
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

(844) 956-___ SHOW
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31 0

2021 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 500HP, 12 Speed Amt

Newly Listed

$63,900 USD

Cummins X15 6 Cylinder 15 L Ultra Low Sulfur Diesel 500 hp Engine, 2020 US EPA Label, Requires Diesel Exhaust Fluid, 100 gal Left Fuel Tank 100 gal Right Fuel Tank, Collision Mitigation...

Condition	Used
Usage	446,682 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	AG 400L
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	C5250
MLS Number	13115902
Category	Sleeper Semi Trucks
Last Updated	9/15/2024
Location	West Sacramento, CA, US
Sold By	DeWald Equipment

(888) 680-___ SHOW
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8 0

2020 Western Star 5700XE Sleeper Semi Truck - Detroit 505HP

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 76" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt

2023 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 500HP, 12 Speed Autoshift Amt

2023 Kenworth T680 Sleeper Semi Truck - 80" Raised Roof Sleeper, Cummins 500HP, 12 Speed Amt

Price Reduced

$129,900 USD

**FACTORY WARRANTY REMAINING!!! Exclusive opportunity on a gently used 2023 KW T680. CB Ready, AM/FM/BT/SAT Radio, Inverter, Webasto Heater are just a few of the amenities this truck has to...

Condition	Used
Usage	149,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	80"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	PJ263298U/MANA
MLS Number	12885946
Category	Sleeper Semi Trucks
Last Updated	9/13/2024
Location	Manassas, VA, US
Sold By	Truck Enterprises Inc.

(855) 907-___ SHOW
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19 0

2021 Peterbilt 579 Sleeper Semi Truck

Price Reduced

$49,950 USD

Truck has complete 92 point Dealer inspection, Complete detail with new mattress, fresh passing dot, and comes with a 6 Month Engine and Aftertreatment Warranty .

Warranty

Condition	Used
Usage	478,248 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Paccar MX/MX-13
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Sky Rise Pro Sleeper
Sleeper Size	80"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	HP4493
MLS Number	13024493
Category	Sleeper Semi Trucks
Last Updated	9/12/2024
Location	Strafford, MO, US
Sold By	HD Trucks LLC

(855) 807-___ SHOW
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49 0

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

Price Reduced

$49,500 USD

2021 CLEAN Fleet Maintained Truck Excellent condition!!, Brush guard, Virgin Rubber, Fridge Quarter Fenders, Collision Mitigation System! Great paint, Clean interior, Great Rubber, Cold AC...

Condition	Used
Usage	514,664 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 2.28 ratio
Stock Number	6724
MLS Number	12744045
Category	Sleeper Semi Trucks
Last Updated	9/12/2024
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

(833) 368-___ SHOW
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15 1

2020 Peterbilt 579 Sleeper Semi Truck - 72" Mid Roof Sleeper, Cummins 500HP, 12 Speed Endurant Amt

Price Reduced

$52,999 USD

Condition	Used
Usage	598,120 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	Mid Roof Sleeper
Sleeper Size	72"
Suspension	Leaf Springs
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	ULD656699
MLS Number	13055929
Category	Sleeper Semi Trucks
Last Updated	9/13/2024
Location	Fargo, ND, US
Sold By	Wallwork Truck Center

(833) 368-___ SHOW
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14 1

2020 Peterbilt 579 Sleeper Semi Truck - 72" Mid Roof Sleeper, Cummins 500HP, 12 Speed Endurant Amt

Price Reduced

$44,999 USD

Condition	Used
Usage	18,783 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	72"
Suspension	Leaf Springs
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	ULD656701
MLS Number	13024062
Category	Sleeper Semi Trucks
Last Updated	9/13/2024
Location	Fargo, ND, US
Sold By	Wallwork Truck Center

(844) 693-___ SHOW
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18 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

$54,900 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	502,869 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
Stock Number	230
MLS Number	13069539
Category	Sleeper Semi Trucks
Last Updated	9/8/2024
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

(833) 986-___ SHOW
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30 0

2020 Western Star 5700 Sleeper Semi Truck - Detroit 505HP

$44,900 USD

574000 Miles, Engine: DETROIT DD15, 505 HP, Fuel Type: Diesel, Drive: 6x4, Wheel Base: 240, Tandem Rear Axles, Front Axle Weight: 13300 lb, Rear Axle Weight: 40000 lb

Condition	Used
Usage	574,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.47 ratio
Stock Number	258003
MLS Number	13101153
Category	Sleeper Semi Trucks
Last Updated	9/7/2024
Location	Tampa, FL, US
Sold By	Southport Truck Group

(877) 841-___ SHOW
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22 0

2020 Freightliner Cascadia 125 Sleeper Semi Truck - Detroit 505HP, 12 Speed Automatic

$47,300 USD

$7,120.00 Total Due - 30 DAYS NO PAYMENT - EASY APPROVAL! FreedomWay Trucks offers a program that bypasses traditional requirements to truck ownership with NO CREDIT CHECK. We call it the...

Condition	Used
Usage	438,349 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	5609
MLS Number	13042987
Category	Sleeper Semi Trucks
Last Updated	9/7/2024
Location	Gulfport, MS, US
Sold By	FreedomWay Trucks

(877) 705-___ SHOW
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15 0

2022 Kenworth T680 Sleeper Semi Truck - 52" Mid Roof Sleeper, Cummins 500HP, 12 Speed Endurant Amt

$69,900 USD

Qualifies for Fed Ex Service. Certified!! Certified!! KWS Certified Pre-Owned / 114-point Inspection / 1 year or 125,000 miles warranty included. Call for Details

Condition	Used
Usage	489,951 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15E
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	52"
Suspension	AG 400L
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	NJ124321U
MLS Number	13055553
Category	Sleeper Semi Trucks
Last Updated	9/6/2024
Location	Hagerstown, MD, US
Sold By	Truck Enterprises Inc.

(844) 956-___ SHOW
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2 0

2020 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 500HP, 12 Speed Endurant Amt

Call for price

Cummins X15 6 Cylinder 14.9 L Ultra Low Sulfur Diesel 500 HP Engine, 2020 US EPA Label, Requires Diesel Exhaust Fluid, 100 gal Left Fuel Tank 100 gal Right Fuel Tank, Collision Mitigation...

Condition	Used
Usage	413,397 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 2.79 ratio
Stock Number	D2650
MLS Number	12987468
Category	Sleeper Semi Trucks
Last Updated	9/6/2024
Location	West Sacramento, CA, US
Sold By	DeWald Equipment

(877) 810-___ SHOW
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19 1

2023 Kenworth T680 Sleeper Semi Truck - 80" Raised Roof Sleeper, Cummins 500HP, 12 Speed Amt

$129,900 USD

Exclusive opportunity on a gently used 2023 KW T680. CB Ready, AM/FM/BT/SAT Radio, Inverter, Webasto Heater are just a few of the amenities this truck has to offer. Very Clean truck with...

Condition	Used
Usage	149,000 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	80"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	PJ263298U
MLS Number	12869744
Category	Sleeper Semi Trucks
Last Updated	9/6/2024
Location	Roanoke, VA, US
Sold By	Truck Enterprises Inc.

(855) 717-___ SHOW
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7 0

2013 Volvo VNL64T670 Sleeper Semi Truck - 62" Mid Roof Sleeper, D13 500HP, 12 Speed I Shift Automatic

$16,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, DEF, ENGINE BRAKES, 500HP, FULL FAIRINGS, 200 FUEL CAP!! Se Habla Español! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 7 DAYS A...

Condition	Used
Usage	883,161 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed I Shift Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	62"
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	N14521-DELIVERY 2 U
MLS Number	13095100
Category	Sleeper Semi Trucks
Last Updated	9/6/2024
Location	Turlock, CA, US
Sold By	Diamond Truck Sales Inc

(844) 748-___ SHOW
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55 0

2023 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Paccar 510HP, 12 Speed Amt

$89,000 USD

Nice late model truck. Fiberglass damage at top of cab extender

Condition	Used
Usage	15,893 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar MX-13
Emission Rating	USA Tier 4 Final
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	253221
MLS Number	12845014
Category	Sleeper Semi Trucks
Last Updated	9/5/2024
Location	Live Oak, FL, US
Sold By	TFS Recovery, Inc.

(844) 216-___ SHOW
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17 1

2021 Freightliner Cascadia 126 Sleeper Semi Truck - Detroit, Automatic

$45,900 USD

Fleet Maintained, Stock MH6765, Fresh DOT, Miles 567,658, Detroit DD15, 505 HP, DT 12 Automatic, 2.85 Ratio, 225" WB, Stationary 5th Wheel, Dual Air Ride Seats, Double Bunk, Power...

Condition	Used
Usage	567,658 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 2.85 ratio
Stock Number	MH6765
MLS Number	12223148
Category	Sleeper Semi Trucks
Last Updated	9/5/2024
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

(888) 680-___ SHOW
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19 1

2023 Kenworth T680 Sleeper Semi Truck - 80" Raised Roof Sleeper, Cummins 500HP, 12 Speed Amt

$129,900 USD

**SAVE THOUSANDS OVER NEW** LOTS OF FACTORY WARRANTY REMAINING!! Exclusive opportunity on a gently used 2023 KW T680. CB Ready, AM/FM/BT/SAT Radio, Inverter, Webasto Heater are just a few...

Condition	Used
Usage	149,000 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	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	PJ263298U-
MLS Number	12873820
Category	Sleeper Semi Trucks
Last Updated	9/4/2024
Location	Richmond, VA, US
Sold By	Truck Enterprises Inc.

(833) 801-___ SHOW
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5 0

2015 Volvo VNL64T730 Sleeper Semi Truck - 78" Mid Roof Sleeper, D13 500HP, 12 Speed I Shift Amt

$15,000 USD

very good truck, runs excellent, dual exhaust, double bunk, work station, dual air ride seats, dump valve, differential lock, A/S 5th, cruise, tilt/tele, *WELL MAINTAINED TRUCK!!,

Condition	Used
Usage	1,060,005 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed I Shift Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	78"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.25 ratio
Stock Number	15D13124730
MLS Number	13086836
Category	Sleeper Semi Trucks
Last Updated	8/31/2024
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(844) 407-___ SHOW
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16 0

2016 Freightliner Cascadia 125 Evolution Sleeper Semi Truck - 71" Mid Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

$24,900 USD

2016 FREIGHTLINER CASCADIA 125 SLEEPER, DETROIT DD15 505HP, DETROIT DT12 12 SPEED AUTOMATIC, DEF DELETED, DOUBLE BUNK, Ready to work Call for more info,

Condition	Used
Usage	749,085 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	Mid Roof Sleeper
Sleeper Size	71"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	2106R
MLS Number	12541554
Category	Sleeper Semi Trucks
Last Updated	9/17/2024
Location	LATHROP, CA, US
Sold By	DOT TRUCK SALES

(844) 693-___ SHOW
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19 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

$54,900 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	483,113 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
Stock Number	229
MLS Number	13055703
Category	Sleeper Semi Trucks
Last Updated	8/24/2024
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

(833) 627-___ SHOW
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17 0

2019 Volvo VNL64T860 Sleeper Semi Truck - Raised Roof Sleeper, D13 500HP, 12 Speed I Shift Amt

$59,900 USD

Well Maintained Fleet Truck ✅ , Fully Serviced ✅ , Work Station ✅, New Tires ✅, Road Ready ✅, ❌ STOP MAKING MONEY FOR OTHERS! ❌ Be your OWN BOSS, make your OWN money! ...

Condition	Used
Usage	709,946 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed I Shift Automatic
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	2053
MLS Number	11456275
Category	Sleeper Semi Trucks
Last Updated	8/23/2024
Location	Donna, TX, US
Sold By	DeLucio USA