Used Diesel Freightliner 12 Speed Trucks For Sale

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1-25 of 3,685 results
1-25 of 3,685 results
Featured Item
Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic
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....
ConditionUsed
Usage663,050 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power505 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automatic
Sleeper TypeRaised Roof Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number282
MLS Number13302520
CategorySleeper Semi Trucks
Last Updated3/28/2025
Location
Belvidere, IL, US
Sold By

First Class 8 Truck Sales

Featured Item
Freightliner Cascadia 126 Day Cab Truck - Detroit 450HP, 12 Speed Dt12 Amt
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,
ConditionUsed
Usage508,207 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power450 HP
Engine ModelDetroit DD13
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automated
SuspensionAirLiner
Rear AxleTandem Axle
Rear End40,000 lb 2.41 ratio
Stock Number108729
MLS Number13418170
CategoryDay Cab Semi Trucks
Last Updated3/11/2025
Location
Louisville, KY, US
Sold By

Boyd Truck Centers

Featured Item
Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit, 12 Speed Dt12 Automatic
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,...
ConditionUsed
Usage329,502 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automatic
Sleeper TypeRaised Roof Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
MLS Number12975900
CategorySleeper Semi Trucks
Last Updated3/12/2025
Location
Selma, CA, US
Sold By

Selma Truck Sales

Featured Item
Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic
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...
ConditionUsed
Usage404,625 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power505 HP
Engine ModelDetroit DD15
Drivetrain6x4
Transmission12 Speed Detroit DT12 Automatic
Sleeper TypeRaised Roof Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
MLS Number10070531
CategorySleeper Semi Trucks
Last Updated3/12/2025
Location
Selma, CA, US
Sold By

Selma Truck Sales

Freightliner Cascadia 126 Day Cab Truck - 455HP, 12 Speed Automatic
18 0

2021 Freightliner Cascadia 126 Day Cab Truck - 455HP, 12 Speed Automatic

Price Drop
$62,250 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;...
ConditionUsed
Usage268,241 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power455 HP
Engine ModelDD15AT
Transmission12 Speed Automatic
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number4947
MLS Number13321627
CategoryDay Cab Semi Trucks
Last Updated3/30/2025
Location
Londonderry, NH, US
Sold By

Penske Used Trucks

Freightliner T12664ST Day Cab Truck - 455HP, 12 Speed Automatic
23 0

2021 Freightliner T12664ST Day Cab Truck - 455HP, 12 Speed Automatic

Recently Updated
$54,750 USD
MANAGERS SPECIAL 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;...
ConditionUsed
Usage411,381 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power455 HP
Engine ModelDD15AT
Transmission12 Speed Automatic
Sleeper Size0"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End46,000 lb 3.21 ratio
Stock Number4823
MLS Number12802043
CategoryDay Cab Semi Trucks
Last Updated3/30/2025
Location
Braintree, MA, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic
22 0

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Price Drop
$70,750 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;...
ConditionUsed
Usage530,946 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDD15AT
Transmission12 Speed Automatic
Sleeper TypeIntegral Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number428844
MLS Number13372269
CategorySleeper Semi Trucks
Last Updated3/30/2025
Location
Piqua, OH, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic
23 0

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated
$72,750 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;...
ConditionUsed
Usage506,170 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDD15AT
Transmission12 Speed Automatic
Sleeper TypeIntegral Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number428840
MLS Number13231536
CategorySleeper Semi Trucks
Last Updated3/30/2025
Location
Piqua, OH, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic
24 0

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated
$71,750 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;...
ConditionUsed
Usage517,415 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDD15AT
Transmission12 Speed Automatic
Sleeper TypeIntegral Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number428839
MLS Number13312179
CategorySleeper Semi Trucks
Last Updated3/30/2025
Location
Piqua, OH, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Single Axle Day Cab Truck - 410HP, 12 Speed Automatic
18 0

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

Recently Updated
$68,000 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;...
ConditionUsed
Usage292,477 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power410 HP
Engine ModelDD13
Transmission12 Speed Automatic
Sleeper Size0"
SuspensionAir Ride
Rear AxleSingle Axle
Rear End23,000 lb 3.21 ratio
Stock Number419553
MLS Number13464294
CategoryDay Cab Semi Trucks
Last Updated3/30/2025
Location
Duluth, GA, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Single Axle Day Cab Truck - 410HP, 12 Speed Automatic
18 0

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

Price Drop
$42,500 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;...
ConditionUsed
Usage578,138 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power410 HP
Engine ModelDD13
Transmission12 Speed Automatic
Sleeper Size0"
SuspensionAir Ride
Rear AxleSingle Axle
Rear End23,000 lb 3.21 ratio
Stock Number403213
MLS Number13231526
CategoryDay Cab Semi Trucks
Last Updated3/30/2025
Location
Montgomery, NY, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic
17 0

2021 Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic

Price Drop
$57,500 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;...
ConditionUsed
Usage423,866 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power435 HP
Engine ModelDD13
Transmission12 Speed Automatic
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number382185
MLS Number13218942
CategoryDay Cab Semi Trucks
Last Updated3/30/2025
Location
Wilmington, OH, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic
26 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Price Drop
$56,000 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;...
ConditionUsed
Usage607,856 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDD15AT
Transmission12 Speed Automatic
Sleeper TypeIntegral Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number394749
MLS Number13352048
CategorySleeper Semi Trucks
Last Updated3/30/2025
Location
Allentown, PA, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic
18 0

2021 Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic

Recently Updated
$85,000 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;...
ConditionUsed
Usage83,795 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power435 HP
Engine ModelDD13
Transmission12 Speed Automatic
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number382775
MLS Number13326713
CategoryDay Cab Semi Trucks
Last Updated3/30/2025
Location
Torrance, CA, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic
23 0

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated
$79,250 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;...
ConditionUsed
Usage521,376 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDD15AT
Transmission12 Speed Automatic
Sleeper TypeIntegral Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number385383
MLS Number13060960
CategorySleeper Semi Trucks
Last Updated3/30/2025
Location
El Paso, TX, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic
18 0

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Price Drop
$74,000 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;...
ConditionUsed
Usage583,201 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDD15AT
Transmission12 Speed Automatic
Sleeper TypeIntegral Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number385348
MLS Number13415631
CategorySleeper Semi Trucks
Last Updated3/30/2025
Location
Sacramento, CA, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic
22 0

2021 Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic

Recently Updated
$79,500 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;...
ConditionUsed
Usage177,935 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power435 HP
Engine ModelDD13
Transmission12 Speed Automatic
Sleeper Size0"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number345348
MLS Number13421670
CategoryDay Cab Semi Trucks
Last Updated3/30/2025
Location
Fontana, CA, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic
21 0

2021 Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic

Recently Updated
$71,250 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;...
ConditionUsed
Usage314,803 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power435 HP
Engine ModelDD13
Transmission12 Speed Automatic
Sleeper Size0"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number345333
MLS Number13293605
CategoryDay Cab Semi Trucks
Last Updated3/30/2025
Location
Fontana, CA, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Day Cab Truck - 455HP, 12 Speed Automatic
22 0

2021 Freightliner Cascadia 126 Day Cab Truck - 455HP, 12 Speed Automatic

Price Drop
$74,000 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;...
ConditionUsed
Usage264,121 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power455 HP
Engine ModelDD15AT
Transmission12 Speed Automatic
Sleeper Size0"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number384720
MLS Number13271033
CategoryDay Cab Semi Trucks
Last Updated3/30/2025
Location
Torrance, CA, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic
16 0

2021 Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic

Recently Updated
$81,750 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;...
ConditionUsed
Usage140,184 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power435 HP
Engine ModelDD13
Transmission12 Speed Automatic
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number383958
MLS Number13356256
CategoryDay Cab Semi Trucks
Last Updated3/30/2025
Location
West Sacramento, CA, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic
18 0

2021 Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic

Price Drop
$76,750 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;...
ConditionUsed
Usage218,217 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power435 HP
Engine ModelDD13
Transmission12 Speed Automatic
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number383941
MLS Number13279910
CategoryDay Cab Semi Trucks
Last Updated3/30/2025
Location
Torrance, CA, US
Sold By

Penske Used Trucks

Freightliner T12664ST Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic
22 0

2021 Freightliner T12664ST Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Price Drop
$51,500 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;...
ConditionUsed
Usage656,640 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDD15AT
Transmission12 Speed Automatic
Sleeper TypeIntegral Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number380896
MLS Number12788816
CategorySleeper Semi Trucks
Last Updated3/30/2025
Location
Baltimore, MD, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic
23 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Price Drop
$57,250 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;...
ConditionUsed
Usage675,045 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDD15AT
Transmission12 Speed Automatic
Sleeper TypeIntegral Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number380836
MLS Number13231479
CategorySleeper Semi Trucks
Last Updated3/30/2025
Location
Corona, CA, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic
23 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Integral Sleeper, 455HP, 12 Speed Automatic

Recently Updated
$66,500 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;...
ConditionUsed
Usage475,215 Miles
Duty ClassHeavy Duty Sleeper Semi Truck
Horse Power455 HP
Engine ModelDD15AT
Transmission12 Speed Automatic
Sleeper TypeIntegral Sleeper
Sleeper Size72"
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number380780
MLS Number13434114
CategorySleeper Semi Trucks
Last Updated3/30/2025
Location
Bensalem, PA, US
Sold By

Penske Used Trucks

Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic
18 0

2021 Freightliner Cascadia 126 Day Cab Truck - 435HP, 12 Speed Automatic

Recently Updated
$80,250 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;...
ConditionUsed
Usage164,527 Miles
Duty ClassHeavy Duty Day Cab Truck
Horse Power435 HP
Engine ModelDD13
Transmission12 Speed Automatic
SuspensionAir Ride
Rear AxleTandem Axle
Rear End40,000 lb 3.08 ratio
Stock Number371592
MLS Number13452534
CategoryDay Cab Semi Trucks
Last Updated3/30/2025
Location
Torrance, CA, US
Sold By

Penske Used Trucks

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