12 Speed 6x4 Trucks For Sale

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Western Star 57X Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt
13 0

2024 Western Star 57X Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt

$185,500 USD
Beautiful Highway Sleeper 57X, DD15 505HP, DT12, 40K rears with 46K Airliner Suspension. Ready to go to work!,
ConditionNew
Usage3,436 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power505 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automated
Sleeper TypeRaised Roof Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 2.85 ratio
Stock NumberWS4783
MLS Number12610132
CategorySleeper Semi Trucks
Last Updated6/15/2024
Location
Bangor, ME, US
Sold By

Freightliner of Maine

Western Star 57X Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt
15 0

2024 Western Star 57X Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt

$179,500 USD
NEW WESTERN STAR 57X 72" HIGHRISE SLEEPERS, DETROIT DD15 505/1750, DT12 AUTOMATED SHIFT TRANS, AIR RIDE, LEATHER INTERIOR, 2 BEDS. READY TO GO
Quantity2
ConditionNew
Usage1,100 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power505 HP
Emission RatingUSA Tier 4 Final
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automated
Sleeper TypeRaised Roof Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.07 ratio
Stock NumberWS4766
MLS Number12613845
CategorySleeper Semi Trucks
Last Updated7/17/2024
Location
Westbrook, ME, US
Sold By

Freightliner of Maine

Freightliner Columbia 120 Sleeper Semi Truck - Raised Roof Sleeper, Detroit, 12 Speed Dt12 Automatic
9 1

2006 Freightliner Columbia 120 Sleeper Semi Truck - Raised Roof Sleeper, Detroit, 12 Speed Dt12 Automatic

Call for price
2006 FREIGHTLINER COLUMBIA 120, 14 LITER DETROIT SERIES 60, AUTOMATIC TRANSMISSION, APU, OVERHAULED BY SMITH POWER,,
ConditionUsed
Duty ClassHeavy Duty Sleeper Semi Truck
Engine ModelDetroit SERIES 60 14.0 DDEC V
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automatic
Sleeper TypeRaised Roof Sleeper
SuspensionAirLiner
Rear AxleTandem Axle
Stock NumberV93380-FL
MLS Number12946394
CategorySleeper Semi Trucks
Last Updated6/21/2024
Location
OGDEN, UT, US
Sold By

Rocky Mountain Truck Parts

Mack Anthem 64T Tri Axle Sleeper Semi Truck - Raised Roof Sleeper, 455HP, 12 Speed M Drive Automatic
17 1

2021 Mack Anthem 64T Tri Axle Sleeper Semi Truck - Raised Roof Sleeper, 455HP, 12 Speed M Drive Automatic

Price Reduced
$60,999 USD
12 Speed Automated | Pusher Axle | Engine Warranty 500k or August 2025 | Transmission Warranty 750k or August 2025 | Cab Warranty 500k or august 2025 | Collision Warning | Navigation |...
ConditionUsed
Usage358,100 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelMack MP8-455M
Drivetrain6x4
Transmission12 Speed mDRIVE Automated
Sleeper TypeMid Roof Sleeper
SuspensionAir Ride
Rear AxleTri Axle
Rear End40,000 lb 3.08 ratio
Stock NumberUMM021524
MLS Number12921378
CategorySleeper Semi Trucks
Last Updated8/20/2024
Location
Fargo, ND, US
Sold By

Wallwork Truck Center

Mack Anthem 64T Tri Axle Sleeper Semi Truck - Raised Roof Sleeper, 455HP, 12 Speed M Drive Automatic
17 1

2021 Mack Anthem 64T Tri Axle Sleeper Semi Truck - Raised Roof Sleeper, 455HP, 12 Speed M Drive Automatic

Price Reduced
$60,999 USD
12 Speed Automated | Pusher Axle | Engine Warranty 500k or August 2025 | Transmission Warranty 750k or August 2025 | Cab Warranty 500k or august 2025 | Collision Warning | Navigation |...
ConditionUsed
Usage331,014 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelMack MP8-455M
Drivetrain6x4
Transmission12 Speed mDRIVE Automated
Sleeper TypeMid Roof Sleeper
SuspensionAir Ride
Rear AxleTri Axle
Rear End40,000 lb 3.08 ratio
Stock NumberUMM021506
MLS Number12921376
CategorySleeper Semi Trucks
Last Updated8/20/2024
Location
Fargo, ND, US
Sold By

Wallwork Truck Center

Peterbilt 579 Sleeper Semi Truck - 72" Mid Roof Sleeper, Cummins 500HP, 12 Speed Endurant Amt
14 1

2020 Peterbilt 579 Sleeper Semi Truck - 72" Mid Roof Sleeper, Cummins 500HP, 12 Speed Endurant Amt

$59,999 USD
Cummins X15 | 500 HP | 12 Speed Automated | 72" Mid Roof | Prestige Interior | Holland AirSlide 5th Wheel | Aluminum Wheels | 13,200 Front | 40,000 Rear | 235" Wheelbase | 3.08 Ratio | 235...
ConditionUsed
Usage18,783 Hours
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power500 HP
Engine ModelCummins X15
Drivetrain6x4
Transmission12 Speed Endurant Automated
Sleeper TypeMid Roof Sleeper
Sleeper Size72"
SuspensionLeaf Springs
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock NumberULD656701
MLS Number13024062
CategorySleeper Semi Trucks
Last Updated8/13/2024
Location
Fargo, ND, US
Sold By

Wallwork Truck Center

Peterbilt 579 Sleeper Semi Truck - 72" Mid Roof Sleeper, Cummins 500HP, 12 Speed Endurant Amt
15 1

2020 Peterbilt 579 Sleeper Semi Truck - 72" Mid Roof Sleeper, Cummins 500HP, 12 Speed Endurant Amt

Newly Listed
$59,999 USD
Cummins X15 | 500 HP | 12 Speed Automated | 72" Mid Roof | Prestige Interior | Holland AirSlide 5th Wheel | Aluminum Wheels | 13,200 Front | 40,000 Rear | 235" Wheelbase | 3.08 Ratio | 235...
ConditionUsed
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power500 HP
Engine ModelCummins X15
Drivetrain6x4
Transmission12 Speed Endurant Automated
Sleeper TypeMid Roof Sleeper
Sleeper Size72"
SuspensionLeaf Springs
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock NumberULD656699
MLS Number13055929
CategorySleeper Semi Trucks
Last Updated8/16/2024
Location
Fargo, ND, US
Sold By

Wallwork Truck Center

2020 International Sleeper Semi Truck
19 0

2020 International Sleeper Semi Truck

$49,950 USD
ConditionUsed
Usage385,346 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Upfit MakeInternational
Horse Power450 HP
Engine ModelCummins CUMMINS X-15
Drivetrain6x4
Transmission12 Speed Automatic
SuspensionAir Ride
Rear AxleTandem Axle
Rear End3.36 ratio
Stock NumberU-8405
MLS Number12760654
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 International LT625 Sleeper Semi Truck
20 0

2020 International LT625 Sleeper Semi Truck

$49,950 USD
ConditionUsed
Usage370,586 Miles
Upfit MakeInternational
Horse Power450 HP
Engine ModelCummins CUMMINS X-15
Drivetrain6x4
Transmission12 Speed Automatic
SuspensionAir Ride
Rear AxleTandem Axle
Rear End3.36 ratio
Stock NumberU-8403
MLS Number12760646
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 Kenworth T680 Sleeper Semi Truck, Thermo King APU, Virgin Drive tires
19 0

2020 Kenworth T680 Sleeper Semi Truck, Thermo King APU, Virgin Drive tires

$67,950 USD
ConditionUsed
Usage450,654 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power450 HP
Engine ModelCummins CUMMINS X-15
Drivetrain6x4
Transmission12 Speed Automatic
Sleeper TypeDouble Bunk
Sleeper Size76"
SuspensionAir Ride
Rear AxleTandem Axle
Stock NumberU-8397
MLS Number12760672
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 Freightliner Cascadia Sleeper Semi Truck
20 0

2020 Freightliner Cascadia Sleeper Semi Truck

$47,950 USD
ConditionUsed
Usage570,912 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automatic
Sleeper TypeMid Roof XT Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End3.08 ratio
Stock Numberu-8222
MLS Number12690763
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, US
Sold By

Impel Union Inc.

2020 Freightliner Cascadia Sleeper Semi Truck
19 0

2020 Freightliner Cascadia Sleeper Semi Truck

$49,950 USD
ConditionUsed
Usage513,853 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automatic
Sleeper TypeMid Roof XT Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End3.08 ratio
Stock NumberU-8221
MLS Number12690759
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, US
Sold By

Impel Union Inc.

2020 Freightliner Cascadia Sleeper Semi Truck
20 0

2020 Freightliner Cascadia Sleeper Semi Truck

$49,950 USD
ConditionUsed
Usage510,100 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automatic
Sleeper TypeMid Roof XT Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End3.08 ratio
Stock Numberu-8219
MLS Number12690762
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, US
Sold By

Impel Union Inc.

2020 International LT Sleeper Semi Truck
20 0

2020 International LT Sleeper Semi Truck

$45,950 USD
ConditionUsed
Usage423,593 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power400 HP
Engine ModelCummins CUMMINS X-15
Drivetrain6x4
Transmission12 Speed Automatic
Sleeper TypeMid Roof XT Sleeper
SuspensionAir Ride
Rear AxleTandem Axle
Stock NumberU-8053
MLS Number12760639
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 International LT Sleeper Semi Truck
20 0

2020 International LT Sleeper Semi Truck

$45,950 USD
ConditionUsed
Usage423,555 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Engine ModelCummins CUMMINS X-15
Drivetrain6x4
Transmission12 Speed Automatic
Sleeper TypeMid Roof XT Sleeper
SuspensionAir Ride
Rear AxleTandem Axle
Stock NumberU-8052
MLS Number12735238
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 International LT Sleeper Semi Truck
21 0

2020 International LT Sleeper Semi Truck

$45,950 USD
ConditionUsed
Usage423,555 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power400 HP
Engine ModelCummins CUMMINS X-15
Drivetrain6x4
Transmission12 Speed Automatic
Sleeper TypeMid Roof XT Sleeper
SuspensionAir Ride
Rear AxleTandem Axle
Stock NumberU-8052
MLS Number12760640
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 Kenworth T680, 76” Double Bunk Sleeper, MX13 – 455 HP, 12 Speed Auto, 230” WB, TriPac APU, New Virgin Drive Tires
27 0

2020 Kenworth T680, 76” Double Bunk Sleeper, MX13 – 455 HP, 12 Speed Auto, 230” WB, TriPac APU, New Virgin Drive Tires

$56,950 USD
2020 Kenworth T680, 76” Double Bunk Sleeper, MX13 – 455 HP, 12 Speed Auto, 230” WB, TriPac APU, New Virgin Drive Tires, Balance of Paccar 7 Year/700K miles Major Component Coverage Financing...
Quantity2
ConditionUsed
Usage446,000 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelPaccar MX13
Drivetrain6x4
Transmission12 Speed Endurant Automatic
Sleeper TypeRaised Roof Sleeper
Sleeper Size76"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 2.64 ratio
Stock NumberU-8011
MLS Number12611335
CategorySleeper Semi Trucks
Last Updated2/13/2024
Location
Wilmer, TX, US
Sold By

Impel Union Inc.

2020 Kenworth T680, 76” Double Bunk Sleeper, MX13 – 455 HP, 12 Speed Auto, 230” WB, TriPac APU, New Virgin Drive Tires
34 0

2020 Kenworth T680, 76” Double Bunk Sleeper, MX13 – 455 HP, 12 Speed Auto, 230” WB, TriPac APU, New Virgin Drive Tires

$56,950 USD
2020 Kenworth T680, 76” Double Bunk Sleeper, MX13 – 455 HP, 12 Speed Auto, 230” WB, TriPac APU, New Virgin Drive Tires, Balance of Paccar 7 Year/700K miles Major Component Coverage Financing...
Quantity2
ConditionUsed
Usage437,300 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelPaccar MX13
Drivetrain6x4
Transmission12 Speed Endurant Automatic
Sleeper TypeRaised Roof Sleeper
Sleeper Size76"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 2.64 ratio
Stock NumberU-8010
MLS Number12611331
CategorySleeper Semi Trucks
Last Updated2/16/2024
Location
Wilmer, TX, US
Sold By

Impel Union Inc.

2020 Freightliner Cascadia Sleeper Semi Truck Detriot DD15, Auto Detroit DT-12
21 0

2020 Freightliner Cascadia Sleeper Semi Truck Detriot DD15, Auto Detroit DT-12

$52,950 USD
ConditionUsed
Usage558,264 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power400 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automated
Sleeper TypeCondo Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Stock NumberU-8006
MLS Number12649850
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 Freightliner Cascadia Sleeper Semi Truck Detriot DD15, Auto Detroit DT-12
22 0

2020 Freightliner Cascadia Sleeper Semi Truck Detriot DD15, Auto Detroit DT-12

$49,950 USD
ConditionUsed
Usage576,143 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power400 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automated
Sleeper TypeCondo Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Stock NumberU-8005
MLS Number12649838
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 Freightliner Cascadia Sleeper Semi Truck Detriot DD15, Auto Detroit DT-12
18 0

2020 Freightliner Cascadia Sleeper Semi Truck Detriot DD15, Auto Detroit DT-12

$52,950 USD
ConditionUsed
Usage542,837 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power400 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automated
Sleeper TypeCondo Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Stock NumberU-8004
MLS Number12649842
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2020 Peterbilt 579 Sleeper Semi Truck
21 0

2020 Peterbilt 579 Sleeper Semi Truck

$64,950 USD
ConditionUsed
Usage461,614 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power450 HP
Engine ModelCummins CUMMINS X-15
Drivetrain6x4
Transmission12 Speed Endurant Automated
Sleeper TypeHi Rise Sleeper
Sleeper Size80"
SuspensionAir Ride
Rear AxleTandem Axle
Stock NumberU-7992
MLS Number12649281
CategorySleeper Semi Trucks
Last Updated3/11/2024
Location
Lone Jack, MO, US
Sold By

Impel Union Inc.

2020 Kenworth T880 Tandem Axle Day Cab, Cummins X15, 450 HP, 12 Speed Auto, 195" Wheelbase, Air Ride, Low Miles.
26 0

2020 Kenworth T880 Tandem Axle Day Cab, Cummins X15, 450 HP, 12 Speed Auto, 195" Wheelbase, Air Ride, Low Miles.

$89,950 USD
2020 Kenworth T880 Tandem Axle Day Cab, Cummins X15, 450 HP, 12 Speed Auto, 195" Wheelbase, Air Ride, Low Miles. Financing available, Ask about available warranties on our equipment,...
ConditionUsed
Usage247,517 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power450 HP
Engine ModelCummins X15
Drivetrain6x4
Transmission12 Speed Endurant Automatic
SuspensionAG 400L
Rear AxleTandem Axle
Rear End40,000 lb 2.79 ratio
Stock NumberU-7971
MLS Number12587407
CategoryDay Cab Semi Trucks
Last Updated3/11/2024
Location
Wilmer, TX, US
Sold By

Impel Union Inc.

2019 Peterbilt 579 Sleeper Sleeper Semi Truck
19 0

2019 Peterbilt 579 Sleeper Sleeper Semi Truck

$45,950 USD
ConditionUsed
Usage413,579 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelPaccar PACCAR MX-13
Drivetrain6x4
Transmission12 Speed Endurant Automated
Sleeper TypeMid Roof Sleeper
Sleeper Size80"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End2.79 ratio
Stock NumberU-7951
MLS Number12649073
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

2019 Peterbilt 579 Sleeper Sleeper Semi Truck
20 0

2019 Peterbilt 579 Sleeper Sleeper Semi Truck

$45,950 USD
ConditionUsed
Usage497,639 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelPaccar PACCAR MX-13
Drivetrain6x4
Transmission12 Speed Endurant Automated
Sleeper TypeMid Roof Sleeper
Sleeper Size80"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End2.79 ratio
Stock NumberU-7950
MLS Number12647256
CategorySleeper Semi Trucks
Last Updated4/8/2024
Location
Houston, TX, US
Sold By

Impel Union Inc.

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