Used 12 Speed 6x4 Trucks For Sale

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15 0

2017 Freightliner Cascadia 125 Sleeper Semi Truck - Mid Roof Sleeper, Detroit, Automatic

Recently Updated

$18,750 USD

If interested please call! Stock#: 14248 Located in Caddo Mills, TX (Just an hour east of downtown Dallas) Ask about our 5% Military/First Responder Discount (Only on select equipment)...

Condition	Used
Usage	801,065 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	14248
MLS Number	13215448
Category	Sleeper Semi Trucks
Last Updated	1/30/2025
Location	Caddo Mills, TX, US
Sold By	Roy's Trucks and Equipment Inc

(877) 705-___ SHOW
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18 0

2021 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Paccar 510HP, 12 Speed Automatic

Newly Listed

$59,900 USD

RECENT LOCAL TRADE, ONE OWNER, WON'T LAST LONG 2021 KW T680, PACCAR MX 13 WITH 510 HP, 12 SP AUTOMATIC TRANSMISSION, 76 INCH RAISED ROOF SLEEPER LOCATED IN HARRISONBURG VA, CALL VICKI...

Condition	Used
Usage	485,654 Miles
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	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	MJ453163U/HBG
MLS Number	13370216
Category	Sleeper Semi Trucks
Last Updated	1/29/2025
Location	Harrisonburg, VA, US
Sold By	Truck Enterprises Inc.

4 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Automatic

Newly Listed

$56,900 USD

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

Condition	Used
Usage	473,786 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	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.16 ratio
Stock Number	F02474-DELIVERY2U
MLS Number	13370076
Category	Sleeper Semi Trucks
Last Updated	1/31/2025
Location	Fort Worth, TX, US
Sold By	Diamond Truck Sales Inc

(866) 314-___ SHOW
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17 0

2023 Mack Anthem 64T Day Cab Truck - MP8 415HP, 12 Speed M Drive Automatic

Newly Listed

$67,500 USD

Mack M drive auto, Mp8 mack engine, engine brake, will upgrade to 505hp, headache rack, allum wheels, low miles and excellent shape,

Condition	Used
Usage	7,900 Hours
Duty Class	Heavy Duty Day Cab Truck
Horse Power	415 HP
Engine Model	Mack MP8
Drivetrain	6x4
Transmission	12 Speed mDRIVE Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	10624
MLS Number	13369768
Category	Day Cab Semi Trucks
Last Updated	1/29/2025
Location	LAKEVILLE, MN, US
Sold By	Manders Diesel

3 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Automatic

Newly Listed

$56,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** AUTOMATIC 12 SPEED!!! ENGINE BRAKE, DEF, SLEEPER WINDOW, SLIDING 5TH WHEEL, Se Habla Español! NO CREDIT? BAD CREDIT? NO...

Condition	Used
Usage	493,638 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	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.16 ratio
Stock Number	F02471-DELIVERY2U
MLS Number	13369761
Category	Sleeper Semi Trucks
Last Updated	1/31/2025
Location	Fort Worth, TX, US
Sold By	Diamond Truck Sales Inc

(844) 216-___ SHOW
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10 0

2016 Mack Pinnacle CXU613 Day Cab Truck - MP8 455HP, 12 Speed M Drive Automatic

Newly Listed

$44,900 USD

Fleet Maintained, MACK MP8, 455 HP, Miles 435426, Automatic, Ratio 3.36, 12k Fronts, 40k Rears, Air Slide 5th Wheel, Cruise, Power/Heated Mirrors, Air slide 5th, Inter axel log, Power...

Condition	Used
Usage	569,014 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	455 HP
Engine Model	Mack MP8
Drivetrain	6x4
Transmission	12 Speed mDRIVE Automatic
Suspension	Air Ride
Stock Number	M05374
MLS Number	13369757
Category	Day Cab Semi Trucks
Last Updated	2/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

(844) 900-___ SHOW
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6 0

2020 Volvo VNL64T760 Sleeper Semi Truck - 68" Raised Roof Sleeper, D13 425HP, 12 Speed Automatic

Recently Updated

$48,900 USD

ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, Automatic 12 SPEED!!! ENGINE BRAKE, DEF, TC, MINI FRIDGE, EPICVU, MUD SNOW TC Se Habla Español! NO CREDIT? BAD CREDIT? NO...

Condition	Used
Usage	612,856 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	425 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	68"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	B03337-DELIVERY 2 U
MLS Number	13332520
Category	Sleeper Semi Trucks
Last Updated	1/29/2025
Location	Bakersfield, CA, US
Sold By	Diamond Truck Sales Inc

(844) 334-___ SHOW
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1 0

2021 International LT625 Sleeper Semi Truck - 73" Raised Roof Sleeper, Cummins 450HP, 12 Speed

Recently Updated

$55,000 USD

Inspection Report

Condition	Used
Usage	428,593 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Raised Roof Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear End	20,000 lb 2.64 ratio
Stock Number	499042
MLS Number	13302170
Category	Sleeper Semi Trucks
Last Updated	1/29/2025
Location	Tampa, FL, US
Sold By	International Motors, LLC

(844) 689-___ SHOW
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33 0

2020 International LT625 Sleeper Semi Truck - 73" Raised Roof Sleeper, A26 450HP, 12 Speed

Recently Updated

$42,000 USD

Manager's Special! 60-Day Truck Protect Promise with qualifying Retail Purchase. 60-Day Truck Protect Promise Coverage INCLUDES Factory-Backed Engine Aftertreatment, Transmission and MORE.

Condition	Used
Usage	405,178 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	492866
MLS Number	12869263
Category	Sleeper Semi Trucks
Last Updated	1/31/2025
Location	Etna, OH, US
Sold By	International Motors, LLC

(866) 695-___ SHOW
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21 0

2016 Volvo VNL64300 Tandem Axle Vacuum Truck - D13, 455HP

Recently Updated

$87,500 USD

704824 Miles, Engine: VOLVO D13, 455 HP, Fuel Type: Diesel, Drive: 6x4, Air Ride Suspension, Wheel Base: 232, Tandem Rear Axles, Rear Axle Weight: 40000 lb

Condition	Used
Usage	704,824 Miles
Duty Class	Heavy Duty Vacuum Truck
Horse Power	455 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	AL1584A
MLS Number	13138469
Category	Vacuum Trucks
Last Updated	1/29/2025
Location	Dallas, TX, US
Sold By	MCO Truck and Equipment

(833) 801-___ SHOW
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4 0

2013 Volvo VNL64T730 Sleeper Semi Truck - 78" Mid Roof Sleeper, D13 425HP, 12 Speed I Shift Amt

Recently Updated

$13,000 USD

nice truck, runs great, very clean, air seats, power windows, power mirrors, heated mirrors, cruise, tilt/tele, differential lock, dump valve, A/S 5th,,

Condition	Used
Usage	710,414 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	425 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 3.42 ratio
Stock Number	13D13710730
MLS Number	12637645
Category	Sleeper Semi Trucks
Last Updated	1/29/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(888) 493-___ SHOW
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13 0

2020 International LT625 Sleeper Semi Truck

Newly Listed

$44,977 USD

For Sale: 2020 International LT625 Sky-Rise Double Bunk Sleeper, Looking for a reliable and comfortable truck for the road ahead? This 2020 International LT625 Sky-Rise Double Bunk Sleeper...

Quantity	5
Condition	Used
Usage	574,221 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15, Signature
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Sky Rise Pro Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	1280546
MLS Number	13367953
Category	Sleeper Semi Trucks
Last Updated	1/28/2025
Location	Atlanta, GA, US
Sold By	Rush Truck Centers Atlanta

(833) 986-___ SHOW
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30 0

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

Newly Listed

$47,900 USD

568955 Miles, Engine: DETROIT DD15, 455 HP, Fuel Type: Diesel, Drive: 6x4, 4 Bag Air Ride Suspension, Sleeper Type: Raised Roof Sleeper, Sleeper Size: 72, Wheel Base: 227, Tandem Rear Axles,...

Condition	Used
Usage	568,955 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.28 ratio
Stock Number	260467
MLS Number	13367680
Category	Sleeper Semi Trucks
Last Updated	1/28/2025
Location	Tampa, FL, US
Sold By	Southport Truck Group

(833) 986-___ SHOW
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33 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP

Newly Listed

$54,900 USD

Thermoking APU, 10 new virgin tires, very nice truck stock: 260036, transmodel: DT12, cab type: Sleeper, engine type: DD15, dualbreathers: 0, dualexhaust: 0,

Condition	Used
Usage	564,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.28 ratio
Stock Number	260036
MLS Number	13367679
Category	Sleeper Semi Trucks
Last Updated	1/28/2025
Location	Tampa, FL, US
Sold By	Southport Truck Group

4 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Automatic

Newly Listed

$59,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** AUTOMATIC 12 SPEED!!!, DEF, SLEEPER WINDOW, SLIDING 5TH WHEEL, Se Habla Español! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 7...

Condition	Used
Usage	471,114 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	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	F02470-DELIVERY2U
MLS Number	13367525
Category	Sleeper Semi Trucks
Last Updated	1/28/2025
Location	Fort Worth, TX, US
Sold By	Diamond Truck Sales Inc

(855) 907-___ SHOW
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19 0

2023 Peterbilt 579 Sleeper Semi Truck

Recently Updated

$66,950 USD

Multiple Units Available, Remainder of a 4 year 500k Factory Warranty, Navigation, Disc Brakes ,Gage Package, Fridge, 510hp, 1850 Torque 92 Point Dealer Inspection, Passing Dot, Complete...

Warranty

Condition	Used
Usage	424,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Condo Sleeper
Sleeper Size	80"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	HP3593
MLS Number	13223593
Category	Sleeper Semi Trucks
Last Updated	1/28/2025
Location	Strafford, MO, US
Sold By	HD Trucks LLC

(844) 216-___ SHOW
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40 1

2017 Freightliner Cascadia 125 Day Cab Truck - Detroit 450HP, 12 Speed Ultrashift Automatic

Newly Listed

$29,500 USD

10 New Virgin tires and wheels (24.5), Fleet Maintained, Stock HT9619, Fresh DOT, Runs/Drives Good, DD13 455 HP, Automatic, 508,602 Miles, Collision Mitigation, Dual air ride seats, Inter...

Condition	Used
Usage	508,602 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Ultrashift Automatic
Rear Axle	Tandem Axle
Stock Number	HT9619
MLS Number	13367449
Category	Day Cab Semi Trucks
Last Updated	2/2/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

(855) 807-___ SHOW
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69 0

2020 Peterbilt 579 Sleeper Semi Truck - 155" Mid Roof Sleeper, Cummins 500HP, 12 Speed Endurant Automatic

Newly Listed

$99,500 USD

VERY CLEAN AND MAINTAINED PETERBILT 579 WITH ARI LEGACY CUSTOM 155 INCH SLEEPER, CUMMINS 525HP, 12 SPEED AUTOMATIC, SLIDING 5TH WHEEL, 14,600 FAW, 40,000 RAW, BULL GUARD, HALF FENDERS,...

Condition	Used
Usage	1,078,195 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	525 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	155"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	6904
MLS Number	13367448
Category	Sleeper Semi Trucks
Last Updated	1/29/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

(844) 216-___ SHOW
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24 3

2020 Freightliner Cascadia 116 Day Cab Truck - Detroit 450HP, 12 Speed Dt12 Amt

Newly Listed

$34,900 USD

15 Available, Fleet maintained, Stock LL9611, Miles 516,925, Automatic, Detroit DD13, 450 HP, Air Slide 5th, Inter-Axle Lock, Air Suspension Dump, Ratio 3.08, WB 180, CD player, Power...

Condition	Used
Usage	516,925 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	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	LL9611
MLS Number	13367447
Category	Day Cab Semi Trucks
Last Updated	1/28/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

7 0

2021 International LT Sleeper Semi Truck - Raised Roof Sleeper, Cummins 450HP, 12 Speed Automatic

Recently Updated

$42,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, AUTOMATIC!!! SLIDING 5TH WHEEL, SIDE AND FULL FAIRINGS, LIQUID DEF, SUSPENSION AIR DUMP, ENGINE BRAKE, Se Habla Español! NO...

Condition	Used
Usage	490,587 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
Stock Number	H01547-DELIVERY 2 U
MLS Number	13332194
Category	Sleeper Semi Trucks
Last Updated	1/28/2025
Location	Houston, TX, US
Sold By	Diamond Truck Sales Inc

(833) 202-___ SHOW
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4 0

2020 International LT625 Sleeper Semi Truck - 56" Hi Rise Sleeper, A26 450HP, 12 Speed

Newly Listed

$45,500 USD

PM, DOT, Available warranty

Inspection Report

Condition	Used
Usage	191,391 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	56"
Suspension	Air Ride
Rear End	40,000 lb 2.64 ratio
Stock Number	501641
MLS Number	13367206
Category	Sleeper Semi Trucks
Last Updated	1/28/2025
Location	La Vergne, TN, US
Sold By	International Motors, LLC

(833) 202-___ SHOW
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2 0

2020 International LT625 Sleeper Semi Truck - 56" Hi Rise Sleeper, A26 400HP, 12 Speed

Newly Listed

$37,500 USD

Virgin Rubber, PM, DOT, Available Warranty.

Inspection Report

Condition	Used
Usage	357,266 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	International A26
Drivetrain	6x4
Transmission	12 Speed Automated
Sleeper Type	Hi Rise Sleeper
Sleeper Size	56"
Suspension	Air Ride
Rear End	40,000 lb 2.79 ratio
Stock Number	497301
MLS Number	13367204
Category	Sleeper Semi Trucks
Last Updated	1/28/2025
Location	La Vergne, TN, US
Sold By	International Motors, LLC

56 1

2021 Volvo VNL64T760 Sleeper Semi Truck - Raised Roof Sleeper, D13 425HP, 12 Speed I Shift Automatic

Price Drop

$59,900 USD

AUTOMATIC 12 SPEED!!! LIQUID DEF, SLEEPER WINDOW, ENGINE BRAKE, SLIDING 5TH WHEEL, TRAILER BRAKE Se Habla Español! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 7 DAYS A WEEK!!!! Disclaimer:,...

Condition	Used
Usage	537,309 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	425 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed I Shift Automatic
Sleeper Type	Raised Roof Sleeper
Rear Axle	Tandem Axle
Stock Number	H01514-DELIVERY 2 U
MLS Number	13284534
Category	Sleeper Semi Trucks
Last Updated	1/28/2025
Location	Houston, TX, US
Sold By	Diamond Truck Sales Inc