Heavy Duty 12 Speed 6x4 Trucks For Sale in United States

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2016 Freightliner Cascadia 125 Day Cab Truck - Detroit 455HP, 12 Speed Dt12 Automatic

$24,900 USD

2016 Freightliner Cascadia 125 Day Cab, 12 Speed Automatic, 686k Miles, Detroit DD15 Engine, Nice Clean Truck Ready To Work!!,

Condition	Used
Usage	686,128 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.53 ratio
MLS Number	12963382
Category	Day Cab Semi Trucks
Last Updated	7/8/2024
Location	Ravenel, SC, US
Sold By	Ravenel Truck & Equipment

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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	7/8/2024
Location	Ravenel, SC, US
Sold By	Ravenel Truck & Equipment

(855) 910-___ SHOW
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2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Amt

Price Reduced

$58,000 USD

New Style Cascadia, 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	471,810 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 2.47 ratio
Stock Number	3418
MLS Number	12955200
Category	Sleeper Semi Trucks
Last Updated	7/31/2024
Location	GRANGER, IA, US
Sold By	Barr-Nunn Transportation LLC

(844) 693-___ SHOW
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2019 Kenworth T680 Sleeper Semi Truck - 80" Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

$44,900 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	599,226 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	80"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	201
MLS Number	12946185
Category	Sleeper Semi Trucks
Last Updated	7/17/2024
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	7/17/2024
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

(844) 940-___ SHOW
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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	7/24/2024
Location	Odenville, AL, US
Sold By	Used Truck and Trailer, Inc.

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49 4

2015 Freightliner Cascadia 125 Day Cab Truck - Detroit 455HP, 12 Speed Dt12 Automatic

$34,000 USD

2015 FREIGHTLINER CASCADIA 125, DD15 ENGINE 455 HP, DT12 AUTO TRANSMISSION, 175"WB, SLIDING FITH, 3.25 RATIO, 85% REMAINING ON RUBBER, CLEAN INTERIOR, A/C AND HEAT.. READY TO WORK.. SEE...

Condition	Used
Usage	362,647 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
MLS Number	12597133
Category	Day Cab Semi Trucks
Last Updated	7/25/2024
Location	Jackson, TN, US
Sold By	Snider Equipment

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38 3

2018 Freightliner Cascadia 126 Day Cab Truck - Detroit 435HP, 12 Speed Dt12 Automatic

$30,000 USD

2018 CASCADIA 126!! DD13 435 HP ENGINE, DT 12 AUTOMATIC TRANSMISSION, AIR RIDE SUSPENSION, SLIDING FIFTH, STEEL DISC 11R22.5 WHEELS, 85 % RUBBER REMAINING!! CLEAN INTERIOR, COLD A/C AND...

Condition	Used
Usage	554,718 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	435 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
MLS Number	12518980
Category	Day Cab Semi Trucks
Last Updated	7/25/2024
Location	Jackson, TN, US
Sold By	Snider Equipment

(833) 985-___ SHOW
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38 3

2019 Freightliner Cascadia 126 Day Cab Truck - Detroit 505HP, 12 Speed Dt12 Automatic

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2018 Freightliner Cascadua 125 Sleeper Sleeper Semi Truck

$27,500 USD

Spectacular 2018 Cascadia-Financing available

Condition	Used
Usage	612,516 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Detroit
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Double Bunk
Stock Number	jk1177
MLS Number	12496207
Category	Sleeper Semi Trucks
Last Updated	7/10/2024
Location	Dupo, IL, US
Sold By	Genesis Equipment Leasing

(256) 605-___ SHOW
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38 0

2020 Mack Anthem Day Cab Truck - 86,000 miles

$69,200 USD

2020 MACK ANTHEM DAY CAB, , -85,000 MILES -ENGINE: MP8 415HP -TRANSMISSION: AUTOMATED MDRIVE 12SPD -BENDIX COLLISION, LANE, AND BLINDSPOT SYSTEM -NEW VIRGIN DRIVE TIRES AND...

Condition	Used
Usage	3,240 Hours
Duty Class	Heavy Duty Day Cab Truck
Horse Power	415 HP
Engine Model	Mack MP8
Drivetrain	6x4
Transmission	12 Speed mDRIVE Automated
Rear Axle	Tandem Axle
MLS Number	12966474
Category	Day Cab Semi Trucks
Last Updated	7/15/2024
Location	FYFFE, AL, US
Sold By	Hill Automotive

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56 4

2017 Freightliner Cascadia 125 Evolution Day Cab Truck - Detroit 505HP, 12 Speed Dt12 Automatic

$37,500 USD

2017 FRIEGHTLINER CASCADIA 125 EVOLUTION!! 469K MILES***, DD15 475 HP ENGINE WITH A DT-12 AUTOMATIC TRANSMISSION!! ALL ALUMINUM WHEELS WITH AN EXCELLENT 90% RUBBER REMAINING!!! DUAL TANKS,...

Condition	Used
Usage	10,818 Hours
Duty Class	Heavy Duty Day Cab Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.23 ratio
MLS Number	12504139
Category	Day Cab Semi Trucks
Last Updated	7/25/2024
Location	Jackson, TN, US
Sold By	Snider Equipment

Featured Item

51 4

2018 Freightliner Cascadia 126 Day Cab Truck - Detroit 435HP, 12 Speed Dt12 Automatic

$33,500 USD

2018 FREIGHTLINER CASCADIA 126 DAYCAB!! 491K MILES** 435 HP, DD13 ENGINE,DT-12 AUTO TRANSMISSION, SLIDING FIFTH WHEEL, 180" WB, 20K FRONTS, 40K REARS, DISC BREAKS, 70% RUBBER REMAINING,CLEAN...

Condition	Used
Usage	98,362 Hours
Duty Class	Heavy Duty Day Cab Truck
Horse Power	435 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
MLS Number	12500178
Category	Day Cab Semi Trucks
Last Updated	7/25/2024
Location	Jackson, TN, US
Sold By	Snider Equipment

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16 0

2025 Peterbilt 567 Sleeper Semi Truck - 72" Raised Roof Sleeper, Cummins 500HP, 12 Speed Endurant Automatic

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BRAND NEW 2025 PETERBILT 567. POWERED WITH A CUMMINS X15 AT 500HP. 72IN HIGH ROOF SLEEPER. EATON AUTO 12 SPEED TRANSMISSION. FRONT AXLE RATING AT 12,200 LBS AND REAR AT 40,000LBS. 260 INCH...

Condition	New
Usage	20 Hours
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	72"
Suspension	Low Air
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	2747798
MLS Number	12986402
Category	Sleeper Semi Trucks
Last Updated	7/16/2024
Location	Butler, PA, US
Sold By	Hunter Truck

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18 0

2024 Peterbilt 579 Sleeper Semi Truck - 80" Raised Roof Sleeper, Paccar 455HP, 12 Speed Endurant Amt

$199,850 USD

NEW UNIT! WORK READY. Pricing includes engine, aftertreatment, and towing warranty for 5 years 500,000 mi

Condition	New
Usage	33 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	80"
Suspension	Pete Low Air Leaf
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	257509
MLS Number	12557804
Category	Sleeper Semi Trucks
Last Updated	5/25/2024
Location	Throop, PA, US
Sold By	Hunter Truck

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23 0

2023 Kenworth T680 Sleeper Semi Truck - 72" Raised Roof Sleeper, Cummins 500HP, 12 Speed Automatic

$145,900 USD

LIKE NEW 2023 KENWORTH T680 NEXT GEN, ONLY 127067 MILES, EXCELLENT CONDITION, CUMMINS X15 WITH 500 HORSEPOWER, EATON FULLER 12 SP AUTOMATED TRANSMISSION, FACTORY WARRANTY, CALL VICKI @...

Condition	Used
Usage	2,909 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	Spring
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	PJ235464U
MLS Number	12954946
Category	Sleeper Semi Trucks
Last Updated	6/26/2024
Location	Harrisonburg, VA, US
Sold By	Truck Enterprises Inc.

(855) 642-___ SHOW
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88 0

2023 Peterbilt 579 Sleeper Semi Truck - 80" Raised Roof Sleeper, Cummins 500HP, 12 Speed Endurant Amt

2019 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 450HP, 12 Speed Endurant Automatic

$99,950 USD

Used Kenworth T680 Sleeper for sale. Features: Air Ride Cab, Hood Spot Mirrors, Plastic Quarter Fenders, Power Locks and Windows, Tilt Steering Column, Air Ride Seats, 2-bed Bunk,...

Condition	Used
Usage	3,079 Hours
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	22P220
MLS Number	11538934
Category	Sleeper Semi Trucks
Last Updated	11/28/2023
Location	Coopersburg, PA, US
Sold By	Coopersburg & Liberty Kenworth

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12 0

2019 Freightliner Cascadia 126 Sleeper Semi Truck - 70" Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Automatic

$89,950 USD

Used Freightliner Cascadia Sleeper for sale. Features: Air Ride Cab, 2 Hood-mounted Spot Mirrors, ThermoKing APU, Wheel Covers, Stainless Mudflap Brackets, Heavy Duty Brush Guard, Power...

Condition	Used
Usage	4,181 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Detroit DD11
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	70"
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.85 ratio
Stock Number	22P326
MLS Number	11746603
Category	Sleeper Semi Trucks
Last Updated	11/28/2023
Location	Coopersburg, PA, US
Sold By	Coopersburg & Liberty Kenworth

(855) 982-___ SHOW
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8 0

2022 Kenworth T880 Day Cab Truck - Paccar 510HP, 12 Speed Automatic

$139,950 USD

Used Kenworth T880 Daycab for sale. Features: Dual Exhaust, 135-gallon Fuel Capacity, Digital Dash, Rear Lockers, Hood-mounted Mirrors, Quarter Fenders, and more. Hundreds of new and used...

Condition	Used
Usage	4,497 Hours
Duty Class	Heavy Duty Day Cab Truck
Horse Power	510 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Automatic
Suspension	AG 400L
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	232466T
MLS Number	12931884
Category	Day Cab Semi Trucks
Last Updated	6/13/2024
Location	Swedesboro, NJ, US
Sold By	Coopersburg & Liberty Kenworth

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5 0

2022 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Paccar 510HP, 12 Speed Automatic

$139,950 USD

Used Kenworth T680 Sleeper for sale. Features: Dual Fuel Tanks, 270 gallon Fuel Capacity, Raised-roof Sleeper cab, Automatic Transmission, and more. Visit Liberty Kenworth and Coopersburg...

Condition	Used
Usage	4,735 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed 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	123023P
MLS Number	11710540
Category	Sleeper Semi Trucks
Last Updated	11/28/2023
Location	Swedesboro, NJ, US
Sold By	Coopersburg & Liberty Kenworth

(855) 906-___ SHOW
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30 0

2023 Peterbilt 579 Day Cab Truck - Cummins 500HP, 12 Speed Automatic

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2023 PETERBILT 579 3-AXLE, Cummins X15 (500 HP), Engine Brake, Eaton Fuller 12-Speed Automatic Transmission, 40,000# Dual Drive Rear Axles (3.08 Ratio), Flex Air Suspension w/ Dash Deflate...

Condition	Used
Usage	5,086 Hours
Duty Class	Heavy Duty Day Cab Truck
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automatic
Suspension	Flex Air
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	E18015
MLS Number	12878642
Category	Day Cab Semi Trucks
Last Updated	6/5/2024
Location	Healdsburg, CA, US
Sold By	Opperman & Son, Inc.

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18 0

2023 Kenworth T680 Sleeper Semi Truck - 72" Raised Roof Sleeper, Paccar 455HP, 12 Speed Automatic

$114,900 USD

2023 KENWORTH, T680, Heavy Duty Trucks - Sleeper Trucks, PACCAR MX-13, AMT, 2023 KENWORTH T680 NEXT GEN, PACCAR MX13 455 HP ENGINE, 12 SPEED AUTOMATED TRANSMISSION, BEAUTIFUL GREEN METAL...

Condition	Used
Usage	5,215 Hours
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	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	PJ235175U/HBG
MLS Number	13003491
Category	Sleeper Semi Trucks
Last Updated	7/23/2024
Location	Harrisonburg, VA, US
Sold By	Truck Enterprises Inc.