Used Diesel 12 Speed 6x4 Trucks For Sale

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19 0

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

Recently Updated

$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	3/28/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

(844) 693-___ SHOW
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32 0

2021 Kenworth T680 Sleeper Semi Truck - 76" Raised Roof Sleeper, Cummins 400HP, Automatic

Price Drop

$62,999 USD

Engine: CUMMINS X15, 450 HP, Fuel Type: Diesel, 12 Speed Automatic Transmission, Drive: 6x4, Air Ride Suspension, Sleeper Type: Raised Roof Sleeper, Sleeper Size: 76, Wheels: Aluminum, Wheel...

Condition	Used
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	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	8679735
MLS Number	13383931
Category	Sleeper Semi Trucks
Last Updated	3/21/2025
Location	Indianapolis, IN, US
Sold By	JX Truck Center

(844) 985-___ SHOW
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28 1

2024 International LT625 Day Cab Truck

$49,900 USD

NICE FULLY LOADED DAY CAB,, LOW MILES, NEW TIRES, FRESH FLUIDS AND FILTERS,, REBUILT TITLE, FINANCING AND WARRANTY AVAILABLE Click to watch a walkaround video above

Condition	Used
Usage	1,613 Hours
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	International A26
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Rear Axle	Tandem Axle
Rear End	2.85 ratio
MLS Number	13322119
Category	Day Cab Semi Trucks
Last Updated	3/18/2025
Location	FYFFE, AL, US
Sold By	Hill Automotive

(256) 605-___ SHOW
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32 0

2022 Peterbilt 579 Cabover Sleeper With 54' Great Dane Trailer

$139,500 USD

This is a very nice one owner truck that has mostly traveled the I5 lane. It has been well maintained, with excellent tires 13,200 front axle and suspension with front air disc...

Condition	Used
Usage	331,517 Miles
Duty Class	Heavy Duty Cabover with Sleeper
Horse Power	500 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed
Sleeper Type	UltraLoft
Sleeper Size	80"
MLS Number	13441176
Category	Cabover Sleepers
Last Updated	3/11/2025
Location	Eugene, OR, US
Sold By	Skyline Equipment Co.

(541) 480-___ 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

(866) 751-___ SHOW
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26 0

2020 International LT625 Sleeper Semi Truck

$46,100 USD

Call for rental/lease prices

Double Bunk Completely reconditioned,, ready for new owner . Cummins 15 litre auto trans double bunk Price includes 90 day 25,000 mile limited warrenty 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	3/20/2025
Location	Benicia, CA, US
Sold By	NorCal Truck Sales and Mfg.

(833) 695-___ 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) 220-___ SHOW
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20 0

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

Recently Updated

$48,500 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	532,801 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	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	313
MLS Number	13452832
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

(844) 693-___ SHOW
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13 1

2021 Volvo VNR64T640 Sleeper Semi Truck - 61" Mid Roof Sleeper, D13 405HP, 12 Speed I Shift Amt

Price Drop

$28,900 USD

2021 Volvo VNR64T640 **New Virgin Dual Tires or Super Single tires available on all trucks Trucks are currently on wide base tires but can be swapped to new dual Virgin tires for an...

Condition	Used
Usage	778,799 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	405 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed I Shift Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	61"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	38,000 lb
Stock Number	TNF113021 Web
MLS Number	13450542
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Channahon, IL, US
Sold By	Nationwide Haul

(855) 981-___ SHOW
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13 1

2021 Volvo VNR64T640 Sleeper Semi Truck - 61" Mid Roof Sleeper, D13 405HP, 12 Speed I Shift Amt

Price Drop

$28,900 USD

2021 Volvo VNR64T640 **New Virgin Dual Tires or Super Single tires available on all trucks Trucks are currently on wide base tires but can be swapped to new dual Virgin tires for an...

Condition	Used
Usage	778,799 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	405 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed I Shift Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	61"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	38,000 lb
Stock Number	TNF113021
MLS Number	13450541
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Channahon, IL, US
Sold By	Nationwide Haul

(855) 981-___ SHOW
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19 0

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

Recently Updated

$48,500 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	587,008 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	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	309
MLS Number	13415622
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

(844) 693-___ SHOW
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19 0

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

Recently Updated

$44,950 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	584,125 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	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	307
MLS Number	13398791
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

(844) 693-___ SHOW
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5 0

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 70" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

Recently Updated

Call for price

hot items call me for more information thank you,

Quantity	11
Condition	Used
Usage	441,960 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	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	#418
MLS Number	13393862
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Fontana, CA, US
Sold By	TCI Transportation

(909) 775-___ SHOW
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5 0

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 70" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

Recently Updated

Call for price

HOT ITEMS ! PLEASE FEEL FREE TO CONTACT SERGIO IF YOU HAVE ANY QUESTIONS OR CONCERNS,

Condition	Used
Usage	336,711 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	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	#447
MLS Number	13393861
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Fontana, CA, US
Sold By	TCI Transportation

(909) 775-___ SHOW
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16 0

2020 Volvo VNR64T300 Day Cab Truck - D13 405HP, 12 Speed I Shift Amt

Recently Updated

$24,000 USD

good truck, runs excellent, fleet maintained, air seat, tilt/tele, differential lock, dump valve, power windows, power door locks, power mirrors, heated mirrors, cruise control, LOW MILES!,

Condition	Used
Usage	497,031 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	405 HP
Engine Model	Volvo D13
Drivetrain	6x4
Transmission	12 Speed I Shift Automated
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.47 ratio
Stock Number	20AV497VNRDC
MLS Number	13383974
Category	Day Cab Semi Trucks
Last Updated	3/28/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(833) 801-___ SHOW
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1 0

2017 Mack Pinnacle CXU613 Day Cab Truck - MP8-445 445HP, 12 Speed M Drive Amt

Recently Updated

$36,900 USD

473232 Miles, Engine: MACK MP8-445, 445 HP, Fuel Type: Diesel, 12 Speed M Drive AMT Transmission, Drive: 6x4, Air Ride Suspension, Wheels: Aluminum, Tandem Rear Axles

Condition	Used
Usage	473,232 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	445 HP
Engine Model	Mack MP8-445
Drivetrain	6x4
Transmission	12 Speed mDRIVE Automated
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	083454
MLS Number	13369557
Category	Day Cab Semi Trucks
Last Updated	3/28/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

(844) 216-___ SHOW
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19 0

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

Recently Updated

$39,950 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	681,514 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	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	292
MLS Number	13323896
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

(844) 693-___ SHOW
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7 0

2019 Volvo VNL64T760 Sleeper Semi Truck - 69" Raised Roof Sleeper, D13M425 425HP, 12 Speed I Shift Automatic

Recently Updated

$34,900 USD

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

Condition	Used
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	425 HP
Engine Model	Volvo D13M425
Drivetrain	6x4
Transmission	12 Speed I Shift Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	69"
Rear Axle	Tandem Axle
Rear End	2.64 ratio
Stock Number	N14802-DELIVERY 2 U
MLS Number	13299946
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Turlock, CA, US
Sold By	Diamond Truck Sales Inc

(855) 717-___ SHOW
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1 0

2021 International LT625 Sleeper Semi Truck - 73" Raised Roof Sleeper, Cummins 400HP, 12 Speed

Newly Listed

$62,000 USD

1 or 2-Year Factory-Backed Engine Aftertreatment Warranty AVAILABLE. $0 Deductible. No Claim Maximum. Backed by Dealer Network of 700+ Locations.

Inspection Report

Condition	Used
Usage	371,014 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 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 2.85 ratio
Stock Number	501095
MLS Number	13483305
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Shreveport, LA, US
Sold By	International Motors, LLC

(855) 285-___ SHOW
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36 0

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

Recently Updated

$46,000 USD

1 or 2-Year Factory-Backed Engine Aftertreatment Warranty AVAILABLE. $0 Deductible. No Claim Maximum. Backed by Dealer Network of 700+ Locations.

Inspection Report

Condition	Used
Usage	447,904 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	498397
MLS Number	13055377
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Shreveport, LA, US
Sold By	International Motors, LLC

(855) 285-___ SHOW
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33 0

2021 International LT625 Sleeper Semi Truck - 73" Raised Roof Sleeper, Cummins 400HP, 12 Speed

Newly Listed

$60,000 USD

Inspection Report

Condition	Used
Usage	400,949 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 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 2.85 ratio
Stock Number	502097
MLS Number	13483286
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Commerce City, CO, US
Sold By	International Motors, LLC

(855) 802-___ SHOW
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33 0

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

Newly Listed

$40,500 USD

Inspection Report

Condition	Used
Usage	253,844 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	502089
MLS Number	13483285
Category	Sleeper Semi Trucks
Last Updated	3/28/2025
Location	Commerce City, CO, US
Sold By	International Motors, LLC

(855) 802-___ SHOW
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1 0

2020 International LT625 Day Cab Truck - Cummins 400HP, 12 Speed

Newly Listed

$56,500 USD

VIRGIN RUBBER,PM,DOT,AVAILABLE WARRANTY

Inspection Report

Condition	Used
Usage	207,742 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Automated
Suspension	Air Ride
Rear End	40,000 lb 2.79 ratio
Stock Number	502069
MLS Number	13483279
Category	Day Cab Semi Trucks
Last Updated	3/28/2025
Location	La Vergne, TN, US
Sold By	International Motors, LLC

(833) 202-___ SHOW
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8 0

2018 Kenworth T680 Day Cab Truck - Paccar 405HP, 12 Speed Automatic

Recently Updated

$78,000 USD

Low mileage unit!, Free 6 month warranty on motor and transmission, If you have any questions, please don't hesitate to call Yvette!,

Condition	Used
Usage	348,967 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	405 HP
Drivetrain	6x4
Transmission	12 Speed Automatic
Rear Axle	Tandem Axle
Stock Number	2536
MLS Number	13215488
Category	Day Cab Semi Trucks
Last Updated	3/28/2025
Location	Fontana, CA, US
Sold By	TCI Transportation