Used 12 Speed 6x4 Trucks For Sale

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17 0

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

Price Drop

$41,950 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	3/1/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

(866) 751-___ SHOW
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14 0

2019 Freightliner Cascadia 126 Day Cab Truck - Detroit 450HP, 12 Speed Dt12 Amt

$32,500 USD

180 DAY/50K MILE WARRANTY INCLUDED!!!! A clean truck, Automatic!!! Call for more information,

Condition	Used
Usage	508,207 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.41 ratio
Stock Number	108729
MLS Number	13418170
Category	Day Cab Semi Trucks
Last Updated	3/11/2025
Location	Louisville, KY, US
Sold By	Boyd Truck Centers

(833) 220-___ SHOW
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8 0

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

$84,999 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	329,502 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	12975900
Category	Sleeper Semi Trucks
Last Updated	3/12/2025
Location	Selma, CA, US
Sold By	Selma Truck Sales

(833) 220-___ SHOW
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9 0

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

(833) 801-___ SHOW
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5 0

2021 Kenworth T680 Day Cab Truck - Paccar 455HP, 12 Speed Endurant Amt

Newly Listed

$35,000 USD

VERY NICE TRUCK, FLEET MAINTAINED! air seat, power windows, power mirrors, heated mirrors, dump valve, sliding 5th wheel, differential lock, good tires, clean cab!,

Condition	Used
Usage	493,709 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	21MX493T680DC
MLS Number	13447027
Category	Day Cab Semi Trucks
Last Updated	3/13/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(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

(855) 591-___ SHOW
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35 0

2019 Freightliner Cascadia 125 Evolution Sleeper Semi Truck - Raised Roof Sleeper, Detroit, 12 Speed Dt12 Amt

Newly Listed

$35,900 USD

2019 Freightliner Cascadia 125 Evolution – 1 Owner, Fleet Maintained Cascadia! This is a clean, southern Oklahoma truck! Detroit DD15, Detroit DT12 Automatic Transmission, Double Bunk...

Condition	Used
Usage	581,030 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
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	JW1822
MLS Number	13446883
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Byron Center, MI, US
Sold By	5 Star Truck Sales, Inc

(833) 986-___ SHOW
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26 0

2023 Freightliner Cascadia 126 Day Cab Truck - Detroit 450HP

Newly Listed

$54,900 USD

2021 DAYCAB, NEW BODY STYLE, LOW MILEAGE!, stock: 261221, transmodel: DT12, cab type: Daycab, engine type: DD13, numberofbeds: 2, xaxleconfiguration: Set Back Axle,

Condition	Used
Usage	440,000 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.47 ratio
Stock Number	261221
MLS Number	13446858
Category	Day Cab Semi Trucks
Last Updated	3/13/2025
Location	Fort Myers, FL, US
Sold By	Southport Truck Group

(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.

(844) 216-___ SHOW
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27 1

2019 Kenworth T680 Sleeper Semi Truck - Paccar 455HP, 12 Speed Endurant Amt

Newly Listed

$39,900 USD

Brand New 285/75R24 all way round ,new wheels, Fleet Maintained, Stock 238360, Miles 504,127, MX-13 Paccar, 455 HP, Automatic, Collision Mitigation, Adaptive Cruise, Very Clean, Mid-Roof...

Condition	Used
Usage	504,127 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	238360
MLS Number	13446643
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

(833) 781-___ SHOW
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18 0

2017 Volvo VNL300 Day Cab, Volvo D-13, Automatic

Price Drop

$16,500 USD

Condition	Used
Usage	830,057 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	405 HP
Engine Model	Volvo D-13
Drivetrain	6x4
Transmission	12 Speed I Shift Automatic
Sleeper Size	77"
Rear End	2.47 ratio
Stock Number	351737
MLS Number	13006690
Category	Day Cab Semi Trucks
Last Updated	3/13/2025
Location	MARYSVILLE, OH, US
Sold By	Schneider

1 0

2022 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Paccar 455HP, 12 Speed Endurant Amt

Recently Updated

$69,900 USD

316095 Miles, 10904 Hours, Engine: PACCAR MX-13, 455 HP, Fuel Type: Diesel, 12 Speed Endurant AMT Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Raised Roof Sleeper, Sleeper...

Condition	Used
Usage	10,904 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.79 ratio
Stock Number	3938
MLS Number	13413303
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Idaho Falls, ID, US
Sold By	Dad's Truck and Trailer Sales

(855) 984-___ SHOW
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20 0

2021 Kenworth T680 Day Cab Truck - Paccar 455HP, 12 Speed Amt

Price Drop

$65,095 USD

Model Year: 2021, Model: T680, Engine: PACCAR MX-13, 455 HP, Transmission: PACCAR TX-12 PO16F112C, 12 SPD, Front Axle: 12,500 lbs Front Brakes: Bendix 16.5x6, Rear Axle: 40,000 lbs Rear...

Condition	Used
Usage	197,197 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Automated
Suspension	AG 400
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	810-3010
MLS Number	13401720
Category	Day Cab Semi Trucks
Last Updated	3/13/2025
Location	Rosedale, MD, US
Sold By	All Roads Trucks

(833) 801-___ SHOW
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25 0

2021 Kenworth T680 Day Cab Truck - Paccar 455HP, 12 Speed Endurant Amt

Recently Updated

$35,000 USD

VERY NICE TRUCK, FLEET MAINTAINED! air seat, power windows, power mirrors, heated mirrors, dump valve, sliding 5th wheel, differential lock, good tires, clean cab!,

Condition	Used
Usage	510,101 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	21MX510T680DC
MLS Number	13401064
Category	Day Cab Semi Trucks
Last Updated	3/13/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

18 0

2022 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Amt

Recently Updated

$71,900 USD

X15 Cummins, TK APU, New Virgin Drives Yokihamas, 5 Year 500K Factory EATS,

Condition	Used
Usage	430,638 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 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
Stock Number	454523
MLS Number	13401050
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Idaho Falls, ID, US
Sold By	Dad's Truck and Trailer Sales

19 0

2022 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Amt

Recently Updated

$70,900 USD

TK APU, 5 Year, 500K EATS, New Virgin Drives,

Condition	Used
Usage	436,695 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 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
Stock Number	454520
MLS Number	13401048
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Idaho Falls, ID, US
Sold By	Dad's Truck and Trailer Sales

21 0

2022 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Amt

Recently Updated

$72,900 USD

5 Year 500k EATS, TK APU, Virgin Tires,

Condition	Used
Usage	427,311 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 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
Stock Number	454502
MLS Number	13401047
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Idaho Falls, ID, US
Sold By	Dad's Truck and Trailer Sales

(855) 802-___ SHOW
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33 0

2021 International LT625 Sleeper Semi Truck - 73" Hi Rise Sleeper, A26 450HP, 12 Speed

Recently Updated

$41,500 USD

Inspection Report

Condition	Used
Usage	471,457 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	International A26
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Hi Rise Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear End	20,000 lb 2.64 ratio
Stock Number	498395
MLS Number	13089455
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Commerce City, CO, US
Sold By	International Motors, LLC

(844) 216-___ SHOW
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40 1

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

Recently Updated

$34,900 USD

10 BRAND NEW TIRES AND WHEELS, Fleet Maintained, Stock 195009, Miles 571,498, MX-13 Paccar, 455 HP, Ultrashift 10 Speed Automatic, Collision Mitigation, Adaptive Cruise, Very Clean,...

Condition	Used
Usage	571,498 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	164813
MLS Number	13372760
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

(844) 216-___ SHOW
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1 0

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

Recently Updated

$29,900 USD

MX-13 Paccar, 455 HP, *Rep Photos*, Automatic, Collision Mitigation, Adaptive Cruise, Very Clean, Mid-Roof with Single Bunk, Alum Polished Wheels, Dual Tanks, Stationary 5th Wheel, Dual Air...

Condition	Used
Usage	625,879 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	164811
MLS Number	13372758
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

(855) 807-___ SHOW
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48 0

2020 International LT Sleeper Semi Truck - 56" Mid Roof Sleeper, Cummins 450HP, 12 Speed Automatic

Recently Updated

$46,500 USD

CLEAN 2020 LT625! CUMMINS X15 POWER, 450HP, EATON AUTO 12SPD TRANSMISSION, NEW VIRGIN GOODYEAR RUBBER, POWER INVERTER TOP FAIRING CAN BE REMOVED UPON REQUEST! RUST FREE! READY TO WORK!,

Condition	Used
Usage	313,370 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	48"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	6895
MLS Number	13321624
Category	Sleeper Semi Trucks
Last Updated	3/13/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

(855) 906-___ SHOW
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26 0

2019 Kenworth T680 Tandem Axle Cab & Chassis Truck - Paccar, 400HP, 12 Speed Ultrashift Automatic

Recently Updated

Call for price

2019 KENWORTH T680 3-AXLE, MX13 (400 HP), Engine Brake, Paccar PO-16F112 Automatic Transmission, Meritor MP40-14X3 38,000# Dual Drive Rear Axles (4.11 Ratio), Paccar Flex Air Suspension w/...

Condition	Used
Usage	11,455 Hours
Duty Class	Heavy Duty Cab & Chassis Truck
Horse Power	400 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Ultrashift Automatic
Suspension	Flex Air
Rear Axle	Tandem Axle
Rear End	38,000 lb 4.11 ratio
Floor Type	Wood Floor
Winch	Yes
Stock Number	E18200
MLS Number	13279726
Category	Cab & Chassis Trucks
Last Updated	3/13/2025
Location	Healdsburg, CA, US
Sold By	Opperman & Son, Inc.

(833) 637-___ SHOW
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23 1

2014 Volvo VNL42T300 Day Cab Truck - D13 435HP, 12 Speed Automatic

Price Drop

$14,900 USD

2014 Volvo VNL D13 435 HP (978,410 miles) 3.25 Ratio, Auto 12 Speed Volvo-ATO2612 D I-Shift ~ Sliding 5th Wheel - Diff Lock - 188 Wheel Base, This is a nice driving truck! Call for more...

Condition	Used
Usage	978,421 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	425 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed Autoshift Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.25 ratio
MLS Number	12919981
Category	Day Cab Semi Trucks
Last Updated	3/13/2025
Location	WINGER, MN, US
Sold By	Lucken Trucks and Parts