12 Speed Trucks with AirLiner Suspension For Sale in United States

2025 Western Star 57X Day Cab Truck - Detroit 505HP, 12 Speed Dt12 Amt

$144,740 USD

DETROIT ASSURANCE, ACTIVE BRAKE ASSIST 5, WITH ADAPTIVE CRUISE CONTROL TO 0 MPH AND FIXED HEADWAY. DETROIT SIDE GUARD ASSIST. DETROIT LANE DEPARTURE WARNING SYSTEM WITH 15-MINUTE OFF TIMEOUT...

Condition	New
Usage	461 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.07 ratio
Stock Number	102446
MLS Number	13603486
Category	Day Cab Semi Trucks
Last Updated	12/30/2025
Location	Louisville, KY, US
Sold By	Boyd Truck Centers

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

$44,500 USD

CLEAN FLEET MAINTAINED FREIGHTLINER CASCADIA 126, DETROIT DD15,455HP, WITH 12 SPD AUTOMATIC,13,220 FAW, 40,000 # Rears! GREAT 22.5 RUBBER! AIRLINER SUSPENSION! THERMO KING APU! 72 INCH...

Condition	Used
Usage	526,342 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	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.23 ratio
Stock Number	7101
MLS Number	13788490
Category	Sleeper Semi Trucks
Last Updated	12/23/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

(855) 906-___ SHOW
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2014 Freightliner Cascadia 125 Tri Axle Cab & Chassis Truck - Detroit, 505HP, 12 Speed Manual

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2014 FREIGHTLINER 4-AXLE CAB CHASSIS, Detroit DD15 14.8L (515HP), Engine Brake, Eaton-Fuller FRO-12610C 10-Speed Manual Transmission, 14,700# Steering Axle, 13,200# Steerable Lift Axle with...

Condition	Used
Usage	656,353 Miles
Duty Class	Heavy Duty Cab & Chassis Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	8x4
Transmission	12 Speed Manual
Suspension	AirLiner
Rear Axle	Tri Axle
Rear End	40,000 lb 4.11 ratio
Stock Number	E18406
MLS Number	14054002
Category	Cab & Chassis Trucks
Last Updated	12/20/2025
Location	Kent, WA, US
Sold By	Opperman & Son, Inc.

2020 Freightliner Cascadia 125 Dump Truck - Detroit 450HP, 12 Speed Dt12 Automatic

$64,500 USD

CLEAN FLEET MAINTAINED, 2020 FREIGHTLINER CASC 125 DUMP TRUCK, DD15 POWERED, 455HP, DT12 AUTO TRANSMISSION, BRAND NEW 14'X57" DUMP BED, NEW PTO, TANK, TARP, 19 CU YARD CAPACITY. AIR LINER...

Condition	Used
Usage	336,970 Miles
Duty Class	Heavy Duty Dump Truck
Horse Power	450 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 2.47 ratio
Stock Number	7141
MLS Number	14049593
Category	Dump Trucks
Last Updated	12/19/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

2020 Freightliner Cascadia 126 Day Cab Truck - Detroit 450HP, 12 Speed Dt12 Automatic

$69,500 USD

CLEAN FLEET MAINTAINED CASCADIA 126, DD13, 450HP, DT12 AUTO OVERDRIVE TRANSMISSION, VIRGIN BRIDGESTONE DRIVE TIRES, BENDIX COLLISION MITIGATION SYSTEM! 3.25 RATIOS, JAKES, FULL LOCKERS!...

Condition	Used
Usage	338,504 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.25 ratio
Stock Number	7109
MLS Number	14000593
Category	Day Cab Semi Trucks
Last Updated	12/17/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

(833) 986-___ SHOW
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2026 Freightliner Cascadia 126 Sleeper Semi Truck - 72" Raised Roof Sleeper, Detroit 455HP

$205,459 USD

2026 Freightliner Gen 5 Cascadia, DD15 455HP 1850 LB/FT, DT12 Automated Transmission, 12,500 Front Axle, 40,000 Rear Axle, 227" Wheelbase, Detroit Assurance 6.0 Suite of Safety Systems -...

Condition	New
Usage	1,609 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	455 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed
Sleeper Type	Raised Roof Sleeper
Sleeper Size	72"
Suspension	AirLiner
Rear Axle	Tandem Axle
Stock Number	260051
MLS Number	13807618
Category	Sleeper Semi Trucks
Last Updated	12/17/2025
Location	Tampa, FL, US
Sold By	Southport Truck Group

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	498 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	Flat Top 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	12/16/2025
Location	Bowling Green, KY, US
Sold By	Boyd Truck Centers

2025 Western Star 57X Sleeper Semi Truck - 72" Mid Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt

$153,686 USD

NEW!!! 57X MID ROOF FLATBED HAULER!!!! DD15/505hp, DT12 AUTOMATED TRANSMISSION with 60 MONTH/750,000 Mile Warranty. Call for more information

Condition	New
Usage	531 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Sleeper Size	72"
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.25 ratio
Stock Number	108920
MLS Number	13184634
Category	Sleeper Semi Trucks
Last Updated	12/16/2025
Location	Louisville, KY, US
Sold By	Boyd Truck Centers

(707) 849-___ SHOW
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2022 Freightliner Cascadia 116 Sleeper Semi Truck - Mid Roof Sleeper, Detroit 470HP, 12 Speed Dt12 Amt

$73,000 USD

2022 Freightliner Cascadia 116 Mid roof sleeper 394k miles, Dd13, 470hp, Dt12 transmission Brand new drive tires Well maintained ready to work,

Condition	Used
Usage	394,765 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	470 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Mid Roof Sleeper
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb
MLS Number	14028828
Category	Sleeper Semi Trucks
Last Updated	12/11/2025
Location	Santa Rosa, CA, US
Sold By	Personal Asset Brokerage

2018 Freightliner Cascadia 113 Day Cab Truck - Detroit 410HP, 12 Speed Dt12 Automatic

$34,500 USD

FLEET MAINTAINED, FREIGHTLINER DAY CAB, LOW MILES, AUTO, GREAT TIRES, ENGINE BRAKE, BACK WINDOW, DETTROIT POWER, READY TO WORK,MANY MORE IN STOCK, PLEASE VISIT WEB-SITE FOR MORE INVENTORY

Condition	Used
Usage	272,029 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	410 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	7154
MLS Number	13998235
Category	Day Cab Semi Trucks
Last Updated	12/3/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

2018 Freightliner Cascadia 113 Day Cab Truck - Detroit 410HP, 12 Speed Dt12 Automatic

$34,500 USD

FLEET MAINTAINED, FREIGHTLINER DAY CAB, LOW MILES, AUTO, GREAT TIRES, ENGINE BRAKE, BACK WINDOW, DETTROIT POWER, READY TO WORK,MANY MORE IN STOCK, PLEASE VISIT WEB-SITE FOR MORE INVENTORY

Condition	Used
Usage	284,378 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	410 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automatic
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	7153
MLS Number	14004882
Category	Day Cab Semi Trucks
Last Updated	11/27/2025
Location	Houston, TX, US
Sold By	Southern Truck Sales Ltd

2024 Western Star 57X Day Cab Truck - Detroit 450HP, 12 Speed Dt12 Amt

$129,304 USD

NEW!!!! DT12 AUTO!!! Detroit Power, HUGE DISCOUNT!!!! Call for more information,

Condition	New
Usage	2,221 Miles
Duty Class	Heavy Duty Day Cab Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	108639
MLS Number	13961721
Category	Day Cab Semi Trucks
Last Updated	11/1/2025
Location	Bowling Green, KY, US
Sold By	Boyd Truck Centers

2026 Western Star 49X Sleeper Semi Truck - 60" Mid Roof Sleeper, Detroit 505HP, 12 Speed Dt12 Amt

$210,000 USD

NEW WESTERN STAR 49X 60 IN MID ROOF SLEEPER. 505HP DD15. NICE TRUCK THAT IS READY TO WORK

Condition	New
Usage	563 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	12 Speed Detroit DT12 Automated
Sleeper Type	Flat Top Sleeper
Sleeper Size	60"
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	109849
MLS Number	13576917
Category	Sleeper Semi Trucks
Last Updated	8/1/2025
Location	Bowling Green, KY, US
Sold By	Boyd Truck Centers

(855) 980-___ SHOW
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2020 Freightliner Cascadia 126 Sleeper Semi Truck - Raised Roof Sleeper, Detroit 450HP, 12 Speed Dt12 Automatic

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2020 FREIGHTLINER CASCADIA 126, DETROIT DD15 450HP, DT12 AUTOMATIC, DA-RT-40 2.85 RATIO, FIXED 5TH WHEEL, AIR RIDE SUSPENSION, AIR RIDE CAB,,

Condition	Used
Usage	799,313 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
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	LP7163-FL
MLS Number	13200779
Category	Sleeper Semi Trucks
Last Updated	10/29/2024
Location	OGDEN, UT, US
Sold By	Rocky Mountain Truck Parts