12 Speed Trucks For Sale

Featured Item

19 0

2019 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Mid Roof Sleeper, Detroit 450HP, 12 Speed Dt12 Automatic

Recently Updated

$44,950 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	567,537 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
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	346
MLS Number	13542957
Category	Sleeper Semi Trucks
Last Updated	7/21/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

Featured Item

19 0

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

Recently Updated

$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	670,003 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	344
MLS Number	13542058
Category	Sleeper Semi Trucks
Last Updated	7/21/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

Featured Item

19 0

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

Recently Updated

$34,950 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	665,832 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	342
MLS Number	13523794
Category	Sleeper Semi Trucks
Last Updated	7/21/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

Featured Item

19 0

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

Price Drop

$37,500 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	625,682 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	336
MLS Number	13483776
Category	Sleeper Semi Trucks
Last Updated	7/21/2025
Location	Belvidere, IL, US
Sold By	First Class 8 Truck Sales

(855) 910-___ SHOW
NUMBERCall Seller

Featured Item

10 0

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

Recently Updated

$47,950 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, Oil Changed Every 45K...

Condition	Used
Usage	497,935 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	3322
MLS Number	13562304
Category	Sleeper Semi Trucks
Last Updated	7/19/2025
Location	GRANGER, IA, US
Sold By	Barr-Nunn Transportation LLC

(888) 493-___ SHOW
NUMBERCall Seller

Featured Item

27 1

2022 Peterbilt 579 Sleeper Semi Truck

Price Drop

$79,900 USD

2022 Peterbilt 579 – Road Ready and Fleet Friendly! Stock1272928, Looking for late-model trucks that are driver-preferred and ready to roll? Check out our 2022 Peterbilt 579 units, built...

Quantity	6
Condition	Used
Usage	424,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	Unibilt
Sleeper Size	80"
Suspension	Flex Air
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.79 ratio
Stock Number	1272928
MLS Number	13503970
Category	Sleeper Semi Trucks
Last Updated	7/19/2025
Location	Atlanta, GA, US
Sold By	Rush Truck Centers Atlanta

(855) 981-___ SHOW
NUMBERCall Seller

Featured Item

10 0

2023 Volvo VNL64T760 Sleeper Semi Truck - 70" Raised Roof Sleeper, D13 425HP, 12 Speed I Shift Amt

$95,000 USD

2023 Volvo VNL64T760, SPECS: - Drive: 6x4, - 70" High Roof, - Double Bunk, - Engine: D13, - Horsepower: 425, - Transmission: VOLVO I-SHIFT ATO2612F, 12 SPEED, - APU: None, - Wheels:...

Condition	Used
Usage	315,541 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	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	38,000 lb 1.27 ratio
Stock Number	NHSA23VNL6DTX Web
MLS Number	13651909
Category	Sleeper Semi Trucks
Last Updated	7/15/2025
Location	Dallas, TX, US
Sold By	Nationwide Haul

(855) 981-___ SHOW
NUMBERCall Seller

Featured Item

8 0

2023 Volvo VNL64T760 Sleeper Semi Truck - 70" Raised Roof Sleeper, D13 425HP, 12 Speed I Shift Amt

$90,000 USD

2023 Volvo VNL64T760, SPECS: - Drive: 6x4, - 70" High Roof, - Double Bunk, - Engine: D13, - Horsepower: 425, - Transmission: VOLVO I-SHIFT ATO2612F, 12 SPEED, - APU: None, - Wheels:...

Condition	Used
Usage	399,760 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	Raised Roof Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	38,000 lb 1.27 ratio
Stock Number	NHSA23VNL3CNC Web
MLS Number	13651902
Category	Sleeper Semi Trucks
Last Updated	7/15/2025
Location	Charlotte, NC, US
Sold By	Nationwide Haul

(833) 300-___ SHOW
NUMBERCall Seller

Featured Item

38 1

2020 Peterbilt 579 Day Cab Truck - Paccar 455HP, 12 Speed Amt

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217229 Miles, 6671 Hours, Engine: PACCAR MX-13, 455 HP, Fuel Type: Diesel, 12 Speed AMT Transmission, Drive: 6x4, Paccar Suspension, Tires: 11R22.5, Wheels: Aluminum, Wheel Base: 188, Tandem...

Condition	Used
Usage	6,671 Hours
Duty Class	Heavy Duty Day Cab Truck
Horse Power	455 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Automated
Suspension	Paccar
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.25 ratio
Stock Number	C-36531
MLS Number	13651856
Category	Day Cab Semi Trucks
Last Updated	6/27/2025
Location	Montreal/ Ile-aux-noix/Toronto/NY, QC, Canada
Sold By	Gamache Truck Center

(833) 444-___ SHOW
NUMBERCall Seller

Featured Item

37 0

2022 Peterbilt 579 Day Cab Tractor

$32,500 USD

2022 Peterbilt 579 Day Cab Tractor, Paccar MX-13 Diesel Engine, 12.9 Liters, 405 HP, PO-16F112C 12-Speed Automated Transmission, Air Ride Suspension, GVWR 34,700 Lbs, Front Axle 12,000 Lbs,...

Condition	Used
Usage	181,163 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	380 HP
Engine Model	Paccar MX/MX-13
Drivetrain	4x2
Transmission	12 Speed
Suspension	Air Ride
Rear End	22,700 lb
Stock Number	9687
MLS Number	13269412
Category	Day Cab Semi Trucks
Last Updated	7/1/2025
Location	Sparta, KY, US
Sold By	Craigmyle Truck and Trailer Sales

8 0

2021 Freightliner Cascadia 126 Day Cab Truck - 12 Speed Automatic

Recently Updated

$33,495 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	774,019 Miles
Duty Class	Heavy Duty Day Cab Truck
Engine Model	DD13'17 450/1650
Transmission	12 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	256106
MLS Number	13465181
Category	Day Cab Semi Trucks
Last Updated	7/22/2025
Location	Fontana, CA, US
Sold By	Ryder

15 0

2018 Freightliner Cascadia 113 Day Cab Truck - 435HP, 12 Speed Automatic

Newly Listed

$40,550 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	265,079 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	435 HP
Engine Model	DD15'13 12.8L 435/18
Transmission	12 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	303101
MLS Number	13715316
Category	Day Cab Semi Trucks
Last Updated	7/22/2025
Location	Bolingbrook, IL, US
Sold By	Ryder

11 0

2019 Freightliner Cascadia 126 Day Cab Truck - 455HP, 12 Speed Automatic

Newly Listed

$35,493 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	510,090 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	455 HP
Engine Model	DD15 GHG'17 455/1650
Transmission	12 Speed
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	870402
MLS Number	13715309
Category	Day Cab Semi Trucks
Last Updated	7/22/2025
Location	Springfield, MA, US
Sold By	Ryder

8 0

2019 Freightliner Cascadia 125 Day Cab Truck - 450HP, 12 Speed Automatic

Newly Listed

$41,830 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	480,670 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	DD13 GHG'17 450/1625
Transmission	12 Speed
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	836538
MLS Number	13715307
Category	Day Cab Semi Trucks
Last Updated	7/22/2025
Location	Indianapolis, IN, US
Sold By	Ryder

14 0

2019 Freightliner Cascadia 125 Day Cab Truck - 450HP, 12 Speed Automatic

Newly Listed

$47,042 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	313,525 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	DD13 GHG'17 450/1625
Transmission	12 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	813284
MLS Number	13715302
Category	Day Cab Semi Trucks
Last Updated	7/22/2025
Location	Bensalem, PA, US
Sold By	Ryder

11 0

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

Newly Listed

$31,500 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	654,830 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	400 HP
Engine Model	X15'17 400/1800
Transmission	12 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.64 ratio
Stock Number	280829
MLS Number	13715294
Category	Day Cab Semi Trucks
Last Updated	7/22/2025
Location	La Vergne, TN, US
Sold By	Ryder

11 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Condo Sleeper, 400HP, 12 Speed Automatic

Newly Listed

$62,001 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	523,970 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	DD15'14 400/1625
Transmission	12 Speed Automatic
Sleeper Type	Condo Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	2.15 ratio
Stock Number	240018
MLS Number	13715289
Category	Sleeper Semi Trucks
Last Updated	7/22/2025
Location	Knoxville, TN, US
Sold By	Ryder

9 0

2021 Freightliner Cascadia 126 Day Cab Truck - 450HP, 12 Speed Automatic

Newly Listed

$63,210 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	450,895 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	DD13'17 450/1650
Transmission	12 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.25 ratio
Stock Number	291599
MLS Number	13715285
Category	Day Cab Semi Trucks
Last Updated	7/22/2025
Location	Orlando, FL, US
Sold By	Ryder

10 0

2019 Freightliner Cascadia 125 Sleeper Semi Truck - 72" Condo Sleeper, 455HP, 12 Speed Automatic

Newly Listed

$44,065 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	648,234 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15 GHG'17 455/1650
Transmission	12 Speed Automatic
Sleeper Type	Condo Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	813184
MLS Number	13715284
Category	Sleeper Semi Trucks
Last Updated	7/22/2025
Location	Greensboro, NC, US
Sold By	Ryder

(888) 493-___ SHOW
NUMBERCall Seller

9 1

2022 Peterbilt 579 Sleeper Semi Truck

Newly Listed

Call for price

2022 Peterbilt 579 – Cummins X15 – Endurant 12-Speed – Thermo King APU – Only 368K Miles Stock #: 1286240 | Call or Text: 678.466.9231 This well-maintained 2022 Peterbilt 579 is ready to hit...

Quantity	10
Condition	Used
Usage	363,338 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins x15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	UltraLoft
Sleeper Size	80"
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	1286240
MLS Number	13715267
Category	Sleeper Semi Trucks
Last Updated	7/22/2025
Location	Atlanta, GA, US
Sold By	Rush Truck Centers Atlanta

(888) 493-___ SHOW
NUMBERCall Seller

15 1

2022 Peterbilt 579 Sleeper Semi Truck w/ APU Stock 1321024 New Body Style

Newly Listed

Call for price

2022 Peterbilt 579 – Cummins X15 – Endurant 12-Speed – Thermo King APU – Only 389K Miles Stock #: 1321024 | Call or Text: 678.466.9231 This well-maintained 2022 Peterbilt 579 is ready to go...

Quantity	10
Condition	Used
Usage	389,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	12 Speed Endurant Automated
Sleeper Type	UltraLoft
Sleeper Size	80"
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	1321024
MLS Number	13715260
Category	Sleeper Semi Trucks
Last Updated	7/22/2025
Location	Atlanta, GA, US
Sold By	Rush Truck Centers Atlanta

(855) 942-___ SHOW
NUMBERCall Seller

2 0

2022 Freightliner Cascadia 126 Single Axle Day Cab Truck - 410HP, 12 Speed Automatic

Newly Listed

Call for price

Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing; extended warranties;...

Condition	Used
Usage	451,856 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	410 HP
Engine Model	DD13
Transmission	12 Speed Automatic
Suspension	Air Ride
Rear Axle	Single Axle
Rear End	23,000 lb 3.21 ratio
Stock Number	382392
MLS Number	13715160
Category	Day Cab Semi Trucks
Last Updated	7/22/2025
Location	Morgantown, WV, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

25 0

2022 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

Recently Updated

$89,750 USD

Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive financing; extended warranties;...

Condition	Used
Usage	294,933 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Cummins X15
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	73"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.64 ratio
Stock Number	454896
MLS Number	13694190
Category	Sleeper Semi Trucks
Last Updated	7/22/2025
Location	Billings, MT, US
Sold By	Penske Used Trucks