12 Speed Trucks with Detroit Engines For Sale

(253) 294-___ SHOW
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7 0

2023 Freightliner Cascadia 126 Sleeper Semi Truck - Detroit 505HP, 12 Speed Dt12 Automatic

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308426 Miles, Engine: DETROIT DD15, 505 HP, Fuel Type: Diesel, 12 Speed DT12 Automatic Transmission, Tandem Rear Axles

Condition	Used
Usage	308,426 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Transmission	12 Speed Detroit DT12 Automatic
Rear Axle	Tandem Axle
Stock Number	L23482
MLS Number	13677924
Category	Sleeper Semi Trucks
Last Updated	7/13/2025
Location	Puyallup, WA, US
Sold By	TCI Transportation

(702) 452-___ SHOW
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5 0

2023 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

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355023 Miles, Engine: DETROIT DD15, 505 HP, Fuel Type: Diesel, 12 Speed DT12 Automatic Transmission, Sleeper Type: Raised Roof Sleeper, Wheel Base: 229, Tandem Rear Axles

Condition	Used
Usage	355,023 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Rear Axle	Tandem Axle
Stock Number	23484
MLS Number	13677893
Category	Sleeper Semi Trucks
Last Updated	7/13/2025
Location	North Las Vegas, NV, US
Sold By	TCI Transportation

(855) 910-___ SHOW
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10 0

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP, 12 Speed Dt12 Amt

Price Drop

$64,950 USD

N.A.P. New Style Cascadia, Air Release 5th Wheel, Auto Trans, Espar Bunk Heater, Invertor, Jumper Posts, LED Lights, Fridge, Sliding 5th Wheel, Alum Wheels, Well Maintained Fleet Truck, Oil...

Condition	Used
Usage	492,051 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	3658
MLS Number	13677848
Category	Sleeper Semi Trucks
Last Updated	7/2/2025
Location	GRANGER, IA, US
Sold By	Barr-Nunn Transportation LLC

(855) 591-___ SHOW
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36 0

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

$49,900 USD

2018 Freightliner Cascadia 126 - 1 Owner, Fleet Maintained Cascadia! This truck came all the way from Road Island! Detroit DD15 Engine, Detroit DT12 Automatic Transmission, Condo Sleeper!...

Condition	Used
Usage	409 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	2.41 ratio
Stock Number	JY9630
MLS Number	13677808
Category	Sleeper Semi Trucks
Last Updated	7/1/2025
Location	Byron Center, MI, US
Sold By	5 Star Truck Sales, Inc

(909) 775-___ SHOW
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3 0

2023 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

$99,800 USD

CONTACT SERGIO FOR MORE INFORMATION,

Condition	Used
Usage	355,023 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Rear Axle	Tandem Axle
Stock Number	23484
MLS Number	13627897
Category	Sleeper Semi Trucks
Last Updated	7/13/2025
Location	Fontana, CA, US
Sold By	TCI Transportation

15 0

2021 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Amt

Price Drop

$74,950 USD

2021 Freightliner Cascadia 126 Sleeper Truck Elevate your long-haul game with this 2021 Freightliner Cascadia 126, a low-mileage powerhouse designed for performance, comfort, and reliability...

Condition	Used
Usage	432,284 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 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 2.16 ratio
Stock Number	MO10353
MLS Number	13604372
Category	Sleeper Semi Trucks
Last Updated	7/4/2025
Location	Kansas City, MO, US
Sold By	Michelle Sells Trucks

(844) 216-___ SHOW
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6 0

2018 Freightliner Cascadia 126 Day Cab Truck - Detroit 435HP, 12 Speed Dt12 Amt

Price Drop

$35,500 USD

315,000 Miles, Detroit DD13 Engine, 435 H.P., Engine Brake, DT12 (Automatic), 40,000 Lb. Rear Ends, 3.08 Ratio, Air Ride Suspension, Hydraulic Power Steering, Air Conditioned, Dual Aluminum...

Condition	Used
Usage	315,000 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	435 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	JX5061
MLS Number	13603426
Category	Day Cab Semi Trucks
Last Updated	7/4/2025
Location	Monroe, GA, US
Sold By	AAA Trucks LLC

25 1

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Amt

Price Drop

$74,950 USD

Unleash Your Earning Potential: Own the Road in This Pristine 2022 Freightliner Cascadia 126 Sleeper!, Tired of trucks that nickel and dime you? Ready to invest in a reliable,...

Condition	Used
Usage	461,376 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 2.16 ratio
Stock Number	CO10355
MLS Number	13590809
Category	Sleeper Semi Trucks
Last Updated	7/4/2025
Location	Oklahoma City, OK, US
Sold By	Michelle Sells Trucks

25 1

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Amt

Price Drop

$74,950 USD

Unleash Your Earning Potential: Own the Road in This Pristine 2022 Freightliner Cascadia 126 Sleeper!, Tired of trucks that nickel and dime you? Ready to invest in a reliable,...

Condition	Used
Usage	461,376 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 2.16 ratio
Stock Number	CO10355
MLS Number	13586899
Category	Sleeper Semi Trucks
Last Updated	7/4/2025
Location	Kansas City, MO, US
Sold By	Michelle Sells Trucks

25 1

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Amt

Price Drop

$74,950 USD

Unleash Your Earning Potential: Own the Road in This Pristine 2022 Freightliner Cascadia 126 Sleeper!, Tired of trucks that nickel and dime you? Ready to invest in a reliable,...

Condition	Used
Usage	461,376 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 2.16 ratio
Stock Number	CO10355
MLS Number	13586895
Category	Sleeper Semi Trucks
Last Updated	7/4/2025
Location	Commerce City, CO, US
Sold By	Michelle Sells Trucks

(866) 751-___ SHOW
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10 0

2026 Western Star 49X Sleeper Semi Truck - 60" Mid Roof Sleeper, Detroit 600HP, 12 Speed Dt12 Amt

$222,650 USD

NEW ARRIVAL!!!! 2026 WESTERN STAR 49XSF!!! BIG HORSEPOWER!!!! 600HP DD16, 1850 TORQUE. HEAVY SPEC TRUCK!!! 46K REAR 16K FRONT. BEAUTIFUL TRUCK! COMFORTABLE TO DRIVE.! FEDERAL EXCISE...

Condition	New
Usage	500 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	600 HP
Engine Model	Detroit DD16
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	60"
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	46,000 lb 3.21 ratio
Stock Number	109848
MLS Number	13576732
Category	Sleeper Semi Trucks
Last Updated	7/3/2025
Location	Bowling Green, KY, US
Sold By	Boyd Truck Centers

(866) 530-___ SHOW
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1 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Mid Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Automatic

$64,995 USD

DETROIT DD15 / AUTOMATIC TRANSMISSION / APU / PTO / FLEET MAINTAINED / FINANCING AVAILABLE 2020 FREIGHTLINER CASCADIA 126, MID-ROOF XT SLEEPER, 449,000 MILES, DETORIT DD15 ENGINE, DETROIT...

Condition	Used
Usage	449,000 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	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	4195
MLS Number	13675906
Category	Sleeper Semi Trucks
Last Updated	6/29/2025
Location	Fontana, CA, US
Sold By	Fontana Truck Center

(833) 970-___ SHOW
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11 0

2018 Freightliner Cascadia 126 Day Cab Truck - Detroit 450HP, 12 Speed Dt12 Amt

$39,900 USD

Freshly back from full detail ready to roll!, Super clean day-cab with Detroit DD13 power matched with a Detroit DT12 amt transmission!, Brand New Aluminum Drive Wheels, Truck was DOT'D and...

Condition	Used
Usage	294,623 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x2
Transmission	12 Speed Detroit DT12 Automated
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.41 ratio
Stock Number	280932
MLS Number	13601443
Category	Day Cab Semi Trucks
Last Updated	6/28/2025
Location	Smithfield, PA, US
Sold By	Hunter Truck

(801) 478-___ SHOW
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31 0

2016 Freightliner Cascadia 125 Evolution Tri Axle Day Cab Truck - Detroit 505HP, 12 Speed Dt12 Amt

$54,950 USD

0 MILES ON NEW TRANSMISSION ( NOT REBUILT ) NEW CLUTCH, RESEALED FLYWHEEL HOUSING, NEW PICK UP TUBE O RINGS, PAN GASKET, OIL FILTER 0 MILES ON NEW HANKOOK DRIVE STEER AXLE TIRES,, (10)...

Condition	Used
Usage	486,051 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	8x4
Transmission	12 Speed Detroit DT12 Automated
Suspension	4 Bag Air Ride
Rear Axle	Tri Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	CASCADIA WET KIT
MLS Number	13672509
Category	Day Cab Semi Trucks
Last Updated	6/29/2025
Location	SALT LAKE CITY, UT, US
Sold By	Vriens Truck Parts

(844) 900-___ SHOW
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35 1

2018 Freightliner Cascadia 125 Sleeper Semi Truck - 58" Mid Roof Sleeper, Detroit 435HP, 12 Speed Dt12 Automatic

$42,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** 12 SPEED AUTOMATIC!!! DEF, ENGINE BRAKE, SLIDING 5TH WHEEL, TRAILER BRAKE, Se Habla Español! NO CREDIT? BAD CREDIT? NO...

Condition	Used
Usage	470,421 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	435 HP
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	58"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	B03517-DELIVERY 2 U
MLS Number	13517914
Category	Sleeper Semi Trucks
Last Updated	6/27/2025
Location	Bakersfield, CA, US
Sold By	Diamond Truck Sales Inc

(844) 900-___ SHOW
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49 1

2018 Freightliner Cascadia 125 Sleeper Semi Truck - 58" Mid Roof Sleeper, Detroit 435HP, 12 Speed Dt12 Automatic

$39,900 USD

*** ASK FOR LOW COST DELIVERY AVAILABLE TO ALL 48 STATES!! *** 12 SPEED AUTOMATIC!!! DEF, ENGINE BRAKE, SLIDING 5TH WHEEL, TRAILER BRAKE, Se Habla Español! NO CREDIT? BAD CREDIT? NO...

Condition	Used
Usage	543,044 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	435 HP
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Mid Roof Sleeper
Sleeper Size	58"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	B03515-DELIVERY 2 U
MLS Number	13517894
Category	Sleeper Semi Trucks
Last Updated	6/27/2025
Location	Bakersfield, CA, US
Sold By	Diamond Truck Sales Inc

(833) 986-___ SHOW
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27 0

2022 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP

$69,900 USD

Mileage 504789.. EXT DETROIT EW4 ENGINE COVERAGE 48 Months 03/25/Miles,

Condition	Used
Usage	504,789 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Drivetrain	6x4
Transmission	12 Speed
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	4 Bag Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	263712
MLS Number	13669262
Category	Sleeper Semi Trucks
Last Updated	6/26/2025
Location	Tampa, FL, US
Sold By	Southport Truck Group

(844) 918-___ SHOW
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6 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Detroit 450HP, 12 Speed Automatic

$39,000 USD

Jacobs brake, 445/50R22.5 rear tires, 275/80R22.5 fronts, Power steering,

Condition	Used
Usage	508,761 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Transmission	12 Speed Automatic
Rear End	3.08 ratio
Stock Number	406
MLS Number	13544611
Category	Sleeper Semi Trucks
Last Updated	6/26/2025
Location	Central Point, OR, US
Sold By	Combined Transport

(480) 995-___ SHOW
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5 0

2019 Freightliner Cascadia 126 Dump Truck - Detroit 470HP, 12 Speed Dt12 Automatic, 18' Dump

$145,000 USD

Brand New Build, On a 2019 Low Mile Chassis, Complete New Dump System and Tarp, For More Information, Contact: Ed Gibbs,

Quantity	2
Condition	Used
Usage	195,000 Miles
Duty Class	Heavy Duty Dump Truck
Bed Length	18 ft.
Horse Power	470 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.23 ratio
Stock Number	2647
MLS Number	13663100
Category	Dump Trucks
Last Updated	7/13/2025
Location	Phoenix, AZ, US
Sold By	TCI Transportation

(909) 775-___ SHOW
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8 0

2020 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 400HP, 12 Speed Dt12 Automatic

$48,000 USD

Please contact sergio if you have any questions or concerns Thank you,

Condition	Used
Usage	594,347 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	400 HP
Engine Model	Detroit DD15
Transmission	12 Speed Detroit DT12 Automatic
Sleeper Type	Raised Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Stock Number	20402
MLS Number	13663098
Category	Sleeper Semi Trucks
Last Updated	7/13/2025
Location	Fontana, CA, US
Sold By	TCI Transportation

(866) 714-___ SHOW
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18 0

2018 Freightliner Cascadia 113 Day Cab Truck

$28,900 USD

2018 Freightliner Cascadia 113 Tandem Day Cab, Detroit DD13 Engine!! 410 HP Engine!!! Detroit DT12 Automatic Transmission!!! ONLY 560,235 MIELS!!! Air Ride Suspension, Sliding 5th Wheel,...

Quantity	4
Condition	Used
Usage	13,085 Hours
Duty Class	Heavy Duty Day Cab Truck
Horse Power	410 HP
Engine Model	Detroit Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	260202
MLS Number	13662859
Category	Day Cab Semi Trucks
Last Updated	6/24/2025
Location	Mcdonough, GA, US
Sold By	The Truck and Trailer Connection INC

(844) 548-___ SHOW
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20 0

2016 Freightliner Cascadia 125 Day Cab Truck - Detroit 435HP, 12 Speed Dt12 Automatic

$24,500 USD

2016 Freightliner Cascadia Daycab Truck, Detroit DD13 435HP Diesel Engine, Detroit DT12 12 Speed Automatic Transmission, 457,000 Actual Miles, 180” WB, 3.25 Gears, Air Suspension,...

Condition	Used
Usage	457,000 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	435 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.25 ratio
MLS Number	13661478
Category	Day Cab Semi Trucks
Last Updated	7/6/2025
Location	Saint Edward, NE, US
Sold By	Quality Trucks & Trailers

(855) 591-___ SHOW
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33 0

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

$49,900 USD

2019 Freightliner Cascadia 126 – 1 Owner, Fleet Maintained Cascadia! This is one sharp, well maintained Cascadia! , 455 HP Detroit DD15 engine, , Detroit DT12 automatic transmission, , ...

Condition	Used
Usage	380,007 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	Mid Roof Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	3.55 ratio
Stock Number	KL9193
MLS Number	13660224
Category	Sleeper Semi Trucks
Last Updated	6/21/2025
Location	Byron Center, MI, US
Sold By	5 Star Truck Sales, Inc