Heavy Duty 12 Speed 6x4 Trucks For Sale

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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

44 1

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 70" Raised Roof Sleeper, Detroit, 12 Speed Dt12 Automatic

Newly Listed

Call for price

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC!!!! SLIDING 5TH WHEEL, TRAILER BRAKE, FULL FAIRINGS, DEF, APU Se Habla Espanol! NO CREDIT? BAD CREDIT? NO...

Condition	Used
Usage	632,203 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	L03067-DELIVERY 2U
MLS Number	13115818
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Fontana, CA, US
Sold By	Diamond Truck Sales Inc

(844) 912-___ SHOW
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3 0

2019 International LT Sleeper Semi Truck - 78" Raised Roof Sleeper, Cummins 450HP, 12 Speed Automatic

Newly Listed

Call for price

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC, SLIDING 5TH WHEEL, TRAILER BRAKE, SIDE AND FULL FAIRINGS, LIQUID DEF Se Habla Espanol! NO CREDIT? BAD CREDIT? NO...

Condition	Used
Usage	581,308 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	78"
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	H01395-DELIVERY 2 U
MLS Number	13115667
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Houston, TX, US
Sold By	Diamond Truck Sales Inc

(855) 984-___ SHOW
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19 0

2024 Kenworth W990 Tandem Axle Car Carrier Truck - Cummins, 500HP, 12 Speed Endurant Amt

Newly Listed

$344,900 USD

2024 Kenworth W990 w/LOHR GT TL Top Loader 9 Car Hauler, Exterior Color: White, Interior: Diamond VIT in Slate Gray, Engine: Cummins X15 Efficiency Series, 500 HP @ 1700 RPM, 1850 lb-ft...

Condition	New
Usage	887 Miles
Duty Class	Heavy Duty Car Carrier Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Flat Top Sleeper
Sleeper Size	52"
Suspension	AG 400L
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	KF358408
MLS Number	13115661
Category	Car Carrier Trucks
Last Updated	9/15/2024
Location	Fort Pierce, FL, US
Sold By	All Roads Trucks

(844) 912-___ SHOW
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3 0

2019 International LT Sleeper Semi Truck - 78" Raised Roof Sleeper, Cummins 450HP, 12 Speed Automatic

Newly Listed

Call for price

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC, SLIDING 5TH WHEEL, TRAILER BRAKE, SIDE AND FULL FAIRINGS, LIQUID DEF Se Habla Espanol! NO CREDIT? BAD CREDIT? NO...

Condition	Used
Usage	430,268 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	78"
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	H01397-DELIVERY 2 U
MLS Number	13115660
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Houston, TX, US
Sold By	Diamond Truck Sales Inc

(855) 984-___ SHOW
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21 0

2024 Kenworth W990 Tandem Axle Car Carrier Truck - Cummins, 500HP, 12 Speed Endurant Amt

Newly Listed

$344,900 USD

2024 Kenworth W990 w/LOHR GT TL Top Loader 9 Car Hauler, Exterior Color: White, Interior: Diamond VIT in Slate Gray, Engine: Cummins X15 Efficiency Series, 500 HP @ 1700 RPM, 1850 lb-ft...

Condition	New
Usage	888 Miles
Duty Class	Heavy Duty Car Carrier Truck
Horse Power	500 HP
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Flat Top Sleeper
Sleeper Size	52"
Suspension	AG 400L
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	KF358415
MLS Number	13115656
Category	Car Carrier Trucks
Last Updated	9/15/2024
Location	Fort Pierce, FL, US
Sold By	All Roads Trucks

(855) 910-___ SHOW
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9 0

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

Newly Listed

$44,500 USD

New Style Cascadia, N.A.P.,Air Release 5th Wheel, Auto Trans, Espar Bunk Heater, Invertor, Jumper Posts, LED Lights, Fridge, Sliding 5th Wheel, Well maintained fleet truck!,

Condition	Used
Usage	479,283 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	3372
MLS Number	13115640
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	GRANGER, IA, US
Sold By	Barr-Nunn Transportation LLC

(844) 334-___ SHOW
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1 0

2019 International LT625 Sleeper Semi Truck - 73" Raised Roof Sleeper, A26 450HP, 12 Speed

Newly Listed

$35,500 USD

Condition	Used
Usage	411,456 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	International A26
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear End	40,000 lb 2.79 ratio
Stock Number	491514
MLS Number	13115351
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Tampa, FL, US
Sold By	International Used Truck Centers

43 1

2018 Freightliner Cascadia 113 Sleeper Semi Truck - 58" Mid Roof Sleeper, Detroit 450HP, 12 Speed Dt12 Automatic

Recently Updated

$34,900 USD

****!!!8 NEW TIRES!!!!**** *** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** 12 SPEED AUTOMATIC!!! DEF, SLIDING 5TH WHEEL, ENGINE BRAKE, INTER AXLE DIFF LOCK/UNLOCK, TRAILER...

Condition	Used
Usage	641,780 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	58"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.07 ratio
Stock Number	B03038- 8 NEW TIRES
MLS Number	13095102
Category	Sleeper Semi Trucks
Last Updated	9/16/2024
Location	Bakersfield, CA, US
Sold By	Diamond Truck Sales Inc

(833) 986-___ SHOW
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8 0

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

Recently Updated

$39,900 USD

FOR SALE - 2020 Western Star 5700XE Sleeper, DD15 Engine 505HP, DT12 Automatic Transmission, 668K miles. The interior is clean, offering double bunks, and Thermoking APU. The truck had a...

Condition	Used
Usage	668,156 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	258000
MLS Number	13094917
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Fort Myers, FL, US
Sold By	Southport Truck Group

46 1

2020 Freightliner Cascadia 116 Sleeper Semi Truck - 58" Mid Roof Sleeper, Detroit 450HP, 12 Speed Dt12 Automatic

Recently Updated

$49,900 USD

****NEW TIRES 95% THREAD**** *** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** AUTOMATIC 12 SPEED DIRECT DRIVE!!! ENGINE BRAKE, DEF, Se Habla Español! NO CREDIT? BAD CREDIT? NO...

Condition	Used
Usage	470,273 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	58"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.41 ratio
Stock Number	B03026-NEW TIRES
MLS Number	13089703
Category	Sleeper Semi Trucks
Last Updated	9/16/2024
Location	Bakersfield, CA, US
Sold By	Diamond Truck Sales Inc

55 1

2021 Peterbilt 579 Sleeper Semi Truck - 75" Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

Recently Updated

$56,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** AUTOMATED 12 SPEED!!! ENGINE BRAKE, DEF, TC. Se Habla Español! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 7 DAYS A WEEK!!!! ...

Condition	Used
Usage	483,327 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	75"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	L03000-VIRGIN
MLS Number	13073705
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Fontana, CA, US
Sold By	Diamond Truck Sales Inc

17 0

2018 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Paccar 455HP, 12 Speed Automatic

Recently Updated

$49,900 USD

NEW LOWER PRICE!! VERY CLEAN TRUCK W/ LOW MILEAGE COMES WITH AN TRI-PAC APU, PACCAR MX13 455 HP ENGINE, 244 WHEELBASE, EATON 12 SPEED ULTRASHIFT TRANSMISSION, FINANCING AND WARRANTY...

Condition	Used
Usage	438,125 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	JJ199489U/MANA
MLS Number	13073481
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Manassas, VA, US
Sold By	Truck Enterprises Inc.

17 0

2018 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Paccar 455HP, 12 Speed Ultrashift Plus Automatic

Recently Updated

$49,900 USD

NEW PRICE!! VERY CLEAN TRUCK W/ LOW MILEAGE COMES WITH AN TRI-PAC APU, PACCAR MX13 455 HP ENGINE, 244 WHEELBASE, EATON 12 SPEED ULTRASHIFT TRANSMISSION. CALL SCOTT AT [804] 615-9350 FOR MORE...

Condition	Used
Usage	438,125 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Ultrashift Plus Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	JJ199489U-
MLS Number	13026019
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Richmond, VA, US
Sold By	Truck Enterprises Inc.

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19 0

2024 Kenworth W990 Tandem Axle Car Carrier Truck - Cummins, 500HP, 12 Speed Endurant Amt

Recently Updated

$344,900 USD

2024 Kenworth W990 w/LOHR GT TL Top Loader 9 Car Hauler, Exterior Color: White, Interior: Diamond VIT in Slate Gray, Engine: Cummins X15 Efficiency Series, 500 HP @ 1700 RPM, 1850 lb-ft...

Condition	New
Usage	750 Miles
Duty Class	Heavy Duty Car Carrier Truck
Horse Power	500 HP
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Flat Top Sleeper
Sleeper Size	52"
Suspension	AG 400L
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	KF358407
MLS Number	12992242
Category	Car Carrier Trucks
Last Updated	9/15/2024
Location	Fort Pierce, FL, US
Sold By	All Roads Trucks

7 1

2020 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 455HP, 12 Speed Endurant Amt

Recently Updated

$69,900 USD

4 LIKE UNITS AVAILABLE FOR IMMEDIATE SALE! We currently have 6 like units in stock and ready for immediate delivery. State and Dot ready! Trucks are Equipped with Cummins Power 455HP, 12...

Condition	Used
Usage	356,667 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 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 2.64 ratio
Stock Number	LJ372913U/MANA
MLS Number	12944284
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Manassas, VA, US
Sold By	Truck Enterprises Inc.

(844) 407-___ SHOW
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28 0

2019 Freightliner Cascadia 126 Sleeper Semi Truck - 71" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

Recently Updated

$79,900 USD

2019 FREIGHTLINER CASCADIA 126 SLEEPER, *ONLY 277,051 MILES*, DETROIT DD15 455HP, DETROIT DT12 12 SPEED AUTOMATIC, DOUBLE BUNK, BUNK HEATER, Ready to work Call for more info,

Condition	Used
Usage	277,051 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	71"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	2165
MLS Number	12921753
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	LATHROP, CA, US
Sold By	DOT TRUCK SALES

22 1

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

Recently Updated

$69,900 USD

LOW MILES FOR THE YEAR, 2020 FREIGHTLINER CASCADIA 126, ONLY 371,049 MILES, RAISED ROOF SLEEPER, THERMO KING DIESEL APU, POWER INVERTER, REFRIGERATOR, SUPER SINGLE TIRES, 505 HP DD15 DETROIT...

Condition	Used
Usage	371,049 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
Sleeper Size	76"
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	LLKZ2481U/MANA
MLS Number	12885873
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Manassas, VA, US
Sold By	Truck Enterprises Inc.

6 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Mid Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

Price Reduced

$59,900 USD

SEVERAL TO CHOOSE FROM, FLEET MAINTAINED 2020 FREIGHTLINER CASCADIA 126, MID-ROOF SLEEPER, FACTORY WARRANTY REMAINING, VA STATE INSPECTION, DOT INSPECTION, DD15 455HP DETROIT MOTOR, DT12...

Condition	Used
Usage	408,573 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	Mid Roof Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	LLLT1933U/MANA
MLS Number	12758052
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Manassas, VA, US
Sold By	Truck Enterprises Inc.

9 0

2019 Mack Pinnacle CXU613 Day Cab Truck - MP8 445HP, 12 Speed M Drive Amt

Recently Updated

$44,900 USD

LOOOWWWW MILES!! 2019 MACK PINNACLE CXU613, DAY CAB, 455 HP MACK MP8 ENGINE, 12 SPEED M-DRIVE AUTOMATED TRANSMISSION, 205" WB, READY TO GO TO WORK FOR YOU!! FINANCING AND WARRANTY...

Condition	Used
Usage	355,136 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	445 HP
Engine Model	Mack MP8
Drivetrain	6x4
Transmission	12 Speed mDRIVE Automated
Suspension	Air Ride
Rear End	40,000 lb
Stock Number	KM089568U/MANA
MLS Number	12750218
Category	Day Cab Semi Trucks
Last Updated	9/14/2024
Location	Manassas, VA, US
Sold By	Truck Enterprises Inc.

12 0

2020 Kenworth T680 Sleeper Semi Truck - 70" Raised Roof Sleeper, Cummins 455HP, 12 Speed Endurant Amt

Recently Updated

$64,900 USD

2020 KENWORTH T680, FIVE TO CHOOSE FROM, DIFFERENT COLORS, SAME SPECS, 455 HP CUMMINS X15 MOTORS, 12 SPEED AUTOMATED TRANSMISSION, 2.79 GEAR RATIO, 230" WB, THERMO KING TRIPAC APU,...

Condition	Used
Usage	460,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	LJ393915U/MANA
MLS Number	12750212
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Manassas, VA, US
Sold By	Truck Enterprises Inc.

(833) 368-___ SHOW
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17 1

2024 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

Recently Updated

$189,900 USD

Condition	New
Usage	1 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
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	NRJ376094
MLS Number	12921406
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Fargo, ND, US
Sold By	Wallwork Truck Center

(833) 368-___ SHOW
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17 1

2024 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

Recently Updated

$189,900 USD

Condition	New
Usage	1 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
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	NRJ376047
MLS Number	12921404
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	Fargo, ND, US
Sold By	Wallwork Truck Center