12 Speed 6x4 Trucks For Sale in United States

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2018 Volvo VNL64T780 Sleeper Semi Truck - 77" Raised Roof Sleeper, D13 455HP, 12 Speed I Shift Automatic

$36,500 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	669,969 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed I Shift Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	77"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	173
MLS Number	12843800
Category	Sleeper Semi Trucks
Last Updated	9/27/2024
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

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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	9/27/2024
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

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2020 Kenworth T680 Sleeper Semi Truck - Cummins 400HP

$39,999 USD

450 CUMMINS -- DOUBLE BUNK -- 12SPD ENDURANT AUTOMATIC -- FRIDGE -- CLEAN INSIDE AND OUT -- CALL TIPTON CONQUEST FOR TRACTORS, TRUCKS, AND TRAILERS!,

Condition	Used
Usage	516,486 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins ISX15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.79 ratio
Stock Number	LJ391370
MLS Number	12849222
Category	Sleeper Semi Trucks
Last Updated	9/9/2024
Location	Odenville, AL, US
Sold By	Used Truck and Trailer, Inc.

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2020 Kenworth T680 Sleeper Semi Truck - Paccar 405HP

$44,999 USD

455 PACCAR ENGINE -- 12SPD PACCAR AUTOMATIC TRANS -- DOUBLE BUNK -- CLEAN INSIDE AND OUT -- CALL TIPTON CONQUEST FOR TRACTORS, TRUCKS, AND TRAILERS!,

Condition	Used
Usage	307,153 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	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.64 ratio
Stock Number	LJ412990
MLS Number	12849220
Category	Sleeper Semi Trucks
Last Updated	9/17/2024
Location	Odenville, AL, US
Sold By	Used Truck and Trailer, Inc.

(804) 898-___ SHOW
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2020 Kenworth T680 Sleeper Semi Truck

$60,000 USD

Call for rental/lease prices

****$3,500 Flat Fee on Rental _ NO MILAGE FEES**** , Year 2020 , Manufacturer Kenworth Model T680 , Condition Used , Drive Type 6x4 , Drive Side Type Left Hand...

Warranty

Condition	Used
Usage	417,330 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Paccar
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
MLS Number	12705655
Category	Sleeper Semi Trucks
Last Updated	9/11/2024
Location	Midlothian, VA, US
Sold By	Life Line Truking

(833) 695-___ SHOW
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2020 International LT625 Sleeper Semi Truck

$46,100 USD

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Double Bunk Completely reconditioned,, ready for new owner . Cummins 15 litre auto trans double bunk Price includes 180 day 50,000 limited Engine warrantee Lease or finance OAC

Warranty

Quantity	2
Condition	Used
Usage	416,439 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15, Signature
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Double Bunk
Rear Axle	Tandem Axle
Stock Number	21450
MLS Number	12934384
Category	Sleeper Semi Trucks
Last Updated	9/23/2024
Location	Benicia, CA, US
Sold By	NorCal Truck Sales and Mfg.

(833) 985-___ SHOW
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2016 Freightliner CAS125 Sleeper Semi Truck

$24,900 USD

Fabulous 2016 Cascadia - Financing Available This truck has been ran through 100% this unit is not California complaint . TunedDeleted 505HP

Condition	Used
Usage	648,848 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Detroit dd15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Double Bunk
Stock Number	gx7919
MLS Number	12496213
Category	Sleeper Semi Trucks
Last Updated	9/3/2024
Location	Dupo, IL, US
Sold By	Genesis Equipment Leasing

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2016 Freightliner Cascadia 125 Evolution Sleeper Semi Truck

$38,900 USD

2016 Freightliner Cascadia 125 High Rise Sleeper, Detroit DD15 6 Cylinder 14.8 L Ultra Low Sulfur Diesel 475/505 HP Engine, Detroit DT12, 12 Speed Automated Transmission, 2017 US EPA Label,...

Condition	Used
Usage	12,817 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	475 HP
Engine Model	Detroit Detroit Diesel DD15 EV
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Hi Rise Sleeper
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.23 ratio
Stock Number	250301
MLS Number	13104685
Category	Sleeper Semi Trucks
Last Updated	9/19/2024
Location	Mcdonough, GA, US
Sold By	The Truck and Trailer Connection INC

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2016 Freightliner Cascadia 125 Evolution Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

$31,900 USD

2016 Freightliner Cascadia Evolution, 12 Speed Automatic, Lots of work done to this truck recently including head gaskets, turbo and more and it is ready to go!!,

Condition	Used
Usage	714,019 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	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	2.47 ratio
MLS Number	12963381
Category	Sleeper Semi Trucks
Last Updated	9/25/2024
Location	Ravenel, SC, US
Sold By	Ravenel Truck & Equipment

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2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Amt

$56,000 USD

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

Condition	Used
Usage	491,102 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	3550
MLS Number	13089617
Category	Sleeper Semi Trucks
Last Updated	9/17/2024
Location	GRANGER, IA, US
Sold By	Barr-Nunn Transportation LLC

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10 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Amt

$56,000 USD

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

Condition	Used
Usage	490,854 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	3574
MLS Number	13069458
Category	Sleeper Semi Trucks
Last Updated	9/17/2024
Location	GRANGER, IA, US
Sold By	Barr-Nunn Transportation LLC

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9 0

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

$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	486,740 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	3391
MLS Number	13066080
Category	Sleeper Semi Trucks
Last Updated	9/14/2024
Location	GRANGER, IA, US
Sold By	Barr-Nunn Transportation LLC

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

Price Drop

$54,950 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	496,227 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	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	216
MLS Number	13024364
Category	Sleeper Semi Trucks
Last Updated	9/28/2024
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

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

$54,999 USD

8 Brand New Drive Tires. Almost new Condition. Fleet Maintained Clean Truck Great condition and well maintained fleet truck. 8 Brand New Tires. Ready to make $$$$$. OK Credit, Bad Credit,...

Condition	Used
Usage	503,837 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
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	12755826
Category	Sleeper Semi Trucks
Last Updated	9/24/2024
Location	Selma, CA, US
Sold By	Selma Truck Sales

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

$81,999 USD

8 Brand New Drive Tires. Fleet Maintained Clean Truck Great condition and well maintained fleet truck. DPF cleaned. 8 Brand New Tires. Ready to make $$$$$. OK Credit, Bad Credit, No Credit,...

Condition	Used
Usage	348,433 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
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	12297404
Category	Sleeper Semi Trucks
Last Updated	9/24/2024
Location	Selma, CA, US
Sold By	Selma Truck Sales

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

$78,999 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	386,281 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
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	12297146
Category	Sleeper Semi Trucks
Last Updated	9/24/2024
Location	Selma, CA, US
Sold By	Selma Truck Sales

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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	9/24/2024
Location	Selma, CA, US
Sold By	Selma Truck Sales

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14 0

2025 Western Star 49X Day Cab Truck - Detroit 560HP, 12 Speed Dt12 Amt

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Beautiful NEW Western Star 49XDC!! Heavy spec tractor, wet kit ready. Detroit DD16 560HP/2050TQ, Detroit DT12 Vocational trans, 46K rears on air, 24.5 rubber and 13300lb steer. Truck is...

Condition	New
Usage	64 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	560 HP
Engine Model	Detroit DD16
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	46,000 lb 3.42 ratio
Stock Number	WS4891
MLS Number	13130055
Category	Day Cab Semi Trucks
Last Updated	9/21/2024
Location	Westbrook, ME, US
Sold By	Freightliner of Maine

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7 0

2025 Western Star 49X Dump Truck - Detroit 470HP

$198,550 USD

2025 Western Star 49x, Detroit DD13 470 hp, Detroit DT12V transmission, 5 Year/Unlimited Transmission Warranty, 7 Year/Unlimited Clutch Warranty, Ox Stampede body, ETA mid-October, PRICE...

Condition	New
Duty Class	Heavy Duty Dump Truck
Horse Power	470 HP
Drivetrain	6x4
Transmission	12 Speed
Suspension	TufTrac
Rear Axle	Tandem Axle
Rear End	46,000 lb 3.42 ratio
Stock Number	256250
MLS Number	13110337
Category	Dump Trucks
Last Updated	9/22/2024
Location	Fort Myers, FL, US
Sold By	Southport Truck Group

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5 0

2025 Western Star 49X Dump Truck - Detroit 470HP

$198,550 USD

2025 Western Star 49x, Detroit DD13 470 hp, Detroit DT12V transmission, 5 Year/Unlimited Transmission Warranty, 7 Year/Unlimited Clutch Warranty, Ox Stampede body, ETA mid-October, PRICE...

Condition	New
Duty Class	Heavy Duty Dump Truck
Horse Power	470 HP
Drivetrain	6x4
Transmission	12 Speed
Suspension	TufTrac
Rear Axle	Tandem Axle
Rear End	46,000 lb 3.42 ratio
Stock Number	256249
MLS Number	13110334
Category	Dump Trucks
Last Updated	9/22/2024
Location	Tampa, FL, US
Sold By	Southport Truck Group

31 0

2020 Western Star 5700XE Sleeper Semi Truck - Mid Roof Sleeper, Detroit 455HP, 12 Speed Endurant Automatic

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269892 Miles, Engine: DETROIT DD15, 455 HP, Fuel Type: Diesel, 12 Speed Endurant Automatic Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Mid Roof Sleeper, Wheels: Aluminum...

Condition	Used
Usage	269,892 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	LLLU7485
MLS Number	13124413
Category	Sleeper Semi Trucks
Last Updated	9/19/2024
Location	Odenville, AL, US
Sold By	Used Truck and Trailer, Inc.

28 0

2020 Western Star 5700XE Sleeper Semi Truck - Raised Roof Sleeper, Detroit 455HP, 12 Speed Endurant Automatic

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1 MATCHING UNIT! CALL TIPTON FOR TRUCK AND TRAILER SALES!,

Condition	Used
Usage	410,486 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	LLLM7842
MLS Number	13124402
Category	Sleeper Semi Trucks
Last Updated	9/19/2024
Location	Odenville, AL, US
Sold By	Used Truck and Trailer, Inc.

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26 0

2019 Western Star 5700XE Sleeper Semi Truck - Detroit 450HP, 12 Speed Dt12 Automatic

$33,100 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	599,932 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Size	80"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	5581
MLS Number	13027613
Category	Sleeper Semi Trucks
Last Updated	8/23/2024
Location	Gulfport, MS, US
Sold By	FreedomWay Trucks