Used Diesel 12 Speed Sleeper Semi Trucks For Sale by Dealerships

(844) 687-___ SHOW
NUMBERCall Seller

2024 Kenworth T680 Sleeper Semi Truck - 52" Mid Roof Sleeper, Paccar 510HP, 12 Speed Endurant Automatic

$89,950 USD

This 2024 Kenworth T680 comes with a remaining 6 year / 600,000 mile PACCAR Premium Warranty, giving owner operators and fleets rare long-term protection on the engine and aftertreatment...

Condition	Used
Usage	120,165 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	510 HP
Engine Model	Paccar MX-13
Drivetrain	6x4
Transmission	12 Speed Endurant Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	52"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.25 ratio
Stock Number	CO11033
MLS Number	14053873
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Kansas City, MO, US
Sold By	Michelle Sells Trucks

(844) 687-___ SHOW
NUMBERCall Seller

2023 Freightliner Cascadia 126 Sleeper Semi Truck - 76" Raised Roof Sleeper, Detroit 450HP, 12 Speed Dt12 Automatic

$109,950 USD

2023 Freightliner Cascadia 126 Sleeper – Detroit DD15 450 HP, DT12 Automatic, 76” Raised Roof Double Bunk, 191K Miles This 2023 Freightliner Cascadia 126 is a well-maintained, Class 8...

Condition	Used
Usage	191,443 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	76"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	MO11105
MLS Number	14109181
Category	Sleeper Semi Trucks
Last Updated	1/30/2026
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Newly Listed

$60,000 USD

Condition	Used
Usage	479,470 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	360207
MLS Number	14136815
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Omaha, NE, US
Sold By	Penske Used Trucks

2020 Freightliner Cascadia 125 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$38,000 USD

Used 2020 Freightliner Cascadia 125 Sleeper Semi Truck, 455HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle, 220 gal fuel capacity,...

Condition	Used
Usage	661,207 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.36 ratio
Stock Number	353912
MLS Number	14099018
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Martinsville, VA, US
Sold By	Penske Used Trucks

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

Recently Updated

$55,300 USD

Several Available!, Fresh DOT, Full 128 Point Inspection, 500,000 Miles, DD15 Detroit, 455 HP, DT12 HD Automated, Double Bunk Condo, Electric APU, Super Singles - can switch out for duals...

Condition	Used
Usage	500,000 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	LY5957
MLS Number	13928572
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 505HP, 12 Speed Automatic

Recently Updated

$59,500 USD

Used 2020 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 458,570 miles, 505 HP DD15AT diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, tandem rear axle,...

Condition	Used
Usage	458,571 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.23 ratio
Stock Number	352006
MLS Number	13800796
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Clackamas, OR, US
Sold By	Penske Used Trucks

2020 Volvo VNL64760 Sleeper Semi Truck - 70" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$49,750 USD

Used 2020 Volvo VNL64760 Sleeper Semi Truck for sale, 675,818 miles, 455 HP D13 diesel engine, 12-speed automatic transmission, 70" integral sleeper, tandem rear axle, air ride suspension,...

Condition	Used
Usage	675,818 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	D13
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.25 ratio
Stock Number	331624
MLS Number	14091764
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Madison, AL, US
Sold By	Penske Used Trucks

2020 Freightliner Cascadia 125 Sleeper Semi Truck - 72" Integral Sleeper, 450HP, 12 Speed Automatic

Recently Updated

$45,500 USD

Used 2020 Freightliner Cascadia 125 Sleeper Semi Truck for sale, 585,281 miles, 450HP DD13 diesel engine, 12-speed automatic Detroit transmission, 72" integral sleeper, tandem rear axle, air...

Condition	Used
Usage	585,281 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	DD13
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.23 ratio
Stock Number	350027
MLS Number	13857305
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Waxahachie, TX, US
Sold By	Penske Used Trucks

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

Recently Updated

Contact for price

Several Available!, Fresh DOT, Full 128 Point Inspection, 565,419 Miles, DD15 Detroit, 455 HP, DT12 HD Automated, Double Bunk Condo, Electric APU, Super Singles - can switch out for duals...

Condition	Used
Usage	565,419 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	LY5958
MLS Number	13916440
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

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

Recently Updated

$49,500 USD

Several Available!, Fresh DOT, Full 128 Point Inspection, 573,043 Miles, DD15 Detroit, 455 HP, DT12 HD Automated, Double Bunk Condo, Electric APU, Super Singles - can switch out for duals...

Condition	Used
Usage	573,043 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	LY5953
MLS Number	13916432
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

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

Recently Updated

$57,600 USD

Several Available!, 10 New dual 285 / 75R / 24.5 Tires, Fresh DOT, Full 128 Point Inspection, 505,081 Miles, DD15 Detroit, 455 HP, DT12 HD Automated, Double Bunk Condo, Electric APU ,...

Condition	Used
Usage	505,081 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
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.09 ratio
Stock Number	LY5951
MLS Number	13916429
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Newly Listed

$66,500 USD

Used 2020 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 337,046 miles, 455HP DD15AT diesel engine, 72" integral sleeper, 12-speed automatic Detroit transmission, tandem rear axle....

Condition	Used
Usage	337,046 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	305051
MLS Number	14136794
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Fort Smith, AR, US
Sold By	Penske Used Trucks

2020 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$49,750 USD

Used 2020 Freightliner Cascadia 126 Sleeper Semi Truck, 455HP DD15AT diesel engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle, air ride suspension,...

Condition	Used
Usage	600,172 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	304476
MLS Number	14101423
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Villa Rica, GA, US
Sold By	Penske Used Trucks

(855) 717-___ SHOW
NUMBERCall Seller

2020 Freightliner Cascadia 125 Single Axle Sleeper Semi Truck - 60" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Automatic

Price Drop $34,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** HEATED AND COOLING SEATS,SLIDING 5TH WHEEL, LIQUID DEF, DETROIT ENGINE, AC!!!!!!! Se Habla Español! NO CREDIT? BAD CREDIT? NO...

Condition	Used
Usage	559,612 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	4x2
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Sleeper Size	60"
Suspension	Air Ride
Rear Axle	Single Axle
Rear End	23,000 lb 3.07 ratio
Stock Number	N15199-DELIVERY 2 U
MLS Number	13908481
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Turlock, CA, US
Sold By	Diamond Truck Sales Inc

(844) 912-___ SHOW
NUMBERCall Seller

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

Recently Updated

$44,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** SLIDING 5TH WHEEL, LIQUID DEF, DETROIT ENGINE, AC!!!!!!! Se Habla Español! NO CREDIT? BAD CREDIT? NO PROBLEM!! OPEN 7 DAYS A...

Condition	Used
Usage	653,808 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
Rear Axle	Tandem Axle
Rear End	3.08 ratio
Stock Number	H02427
MLS Number	13900404
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Houston, TX, US
Sold By	Diamond Truck Sales Inc

2019 International LT625 Sleeper Semi Truck - 73" Integral Sleeper, Cummins 450HP, 12 Speed Automatic

Recently Updated

$38,750 USD

Used 2019 International LT625 Sleeper Semi Truck, 442,821 miles, 450 HP Cummins X15 diesel engine, 12-speed Eaton automatic transmission, 73" integral sleeper, 13200 lbs front axle, 40000...

Condition	Used
Usage	442,821 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 3.25 ratio
Stock Number	332688
MLS Number	14013536
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Greeley, CO, US
Sold By	Penske Used Trucks

2019 Freightliner Cascadia 116 Sleeper Semi Truck - 60" Integral Sleeper, 450HP, 12 Speed Automatic

Recently Updated

$51,000 USD

Used 2019 Freightliner Cascadia 116 Sleeper Semi Truck for sale, 352,860 miles, 450HP DD13 diesel engine, 12-speed Detroit automatic transmission, 60" integral sleeper, tandem rear axle....

Condition	Used
Usage	352,860 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	DD13
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	60"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	268882
MLS Number	13779224
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Monmouth Junction, NJ, US
Sold By	Penske Used Trucks

2019 Volvo VNR64640 Sleeper Semi Truck - 61" Integral Sleeper, 425HP, 12 Speed Automatic

Recently Updated

$45,000 USD

Used 2019 Volvo VNR64640 Sleeper Semi Truck for sale, 512,870 miles, 425HP D13 engine, 12-speed Volvo automatic transmission, 61" integral sleeper, tandem rear axle, air ride suspension,...

Condition	Used
Usage	512,870 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	425 HP
Engine Model	D13
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	61"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.47 ratio
Stock Number	268879
MLS Number	14091678
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Duluth, GA, US
Sold By	Penske Used Trucks

2019 Volvo VNR64640 Sleeper Semi Truck - 61" Integral Sleeper, 425HP, 12 Speed Automatic

Recently Updated

$44,750 USD

Used 2019 Volvo VNR64640 Sleeper Semi Truck for sale, 521,390 miles, 425HP D13 diesel engine, 12-speed Volvo automatic transmission, 61" integral sleeper, tandem rear axle, air ride...

Condition	Used
Usage	521,390 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	425 HP
Engine Model	D13
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	61"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.47 ratio
Stock Number	268876
MLS Number	14087590
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Duluth, GA, US
Sold By	Penske Used Trucks

2019 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$42,500 USD

Used 2019 Freightliner Cascadia 126 Sleeper Semi Truck for sale, 644,880 miles, 455 HP DD15AT diesel engine, 72" integral sleeper, 12-speed automatic Detroit transmission, tandem rear axle,...

Condition	Used
Usage	644,977 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	238079
MLS Number	14096001
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Greensboro, NC, US
Sold By	Penske Used Trucks

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

Price Drop $51,250 USD

Used 2019 Freightliner Cascadia 125 Sleeper Semi Truck for sale, 417,342 miles, 455HP DD15AT engine, 12-speed Detroit automatic transmission, 72" integral sleeper, tandem rear axle, air ride...

Condition	Used
Usage	417,343 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	DD15AT
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	72"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	226797
MLS Number	13815521
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	West Sacramento, CA, US
Sold By	Penske Used Trucks

(844) 900-___ SHOW
NUMBERCall Seller

2020 Freightliner Cascadia 116 Sleeper Semi Truck - Mid Roof Sleeper, Detroit 450HP, 12 Speed Dt12 Automatic

Recently Updated

$41,900 USD

*** 8 NEW TIRES!!! ***, *** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! ***, 12 SPEED AUTOMATIC!!! 5TH WHEEL, AIR RIDE, DEF, PTO ACCESSIBILITY, ENG FAN, AIR SLIDE, HSA OFF Se...

Condition	Used
Usage	536,343 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	57"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	L01525- 8 NEW TIRES
MLS Number	13807639
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Fontana, CA, US
Sold By	Diamond Truck Sales Inc

(855) 370-___ SHOW
NUMBERCall Seller

2020 Peterbilt 579 Sleeper Semi Truck - Mid Roof Sleeper, Paccar 430HP, 12 Speed Automatic

Price Drop $32,900 USD

2020 Peterbilt 579 Tandem Axle Mid-Roof Single Bunk Sleeper, Paccar MX13 430HP Engine, Automatic 12 Spd Paccar PO-16F112C Transmission, Air Ride Suspension, 52,000 GVW, 12,000# spicer...

Condition	Used
Usage	13,344 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	430 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	40,000 lb
Stock Number	20PB046
MLS Number	13749660
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

2019 Volvo VNL64760 Sleeper Semi Truck - 70" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated

$57,500 USD

Used 2019 Volvo VNL64760 Sleeper Semi Truck for sale, 455HP D13 Diesel, 12-speed Volvo automatic transmission, 70" integral sleeper, tandem rear axle, air ride suspension, 436,263 miles, 225...

Condition	Used
Usage	436,812 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	D13
Transmission	12 Speed Automatic
Sleeper Type	Integral Sleeper
Sleeper Size	70"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	216514
MLS Number	14121773
Category	Sleeper Semi Trucks
Last Updated	2/11/2026
Location	Mebane, NC, US
Sold By	Penske Used Trucks