Flat Top Sleeper Semi Trucks with Detroit Engines For Sale

1 - 23 of 23 listings

2011 Western Star 4900 Tri Axle Sleeper Semi Truck - Flat Top Sleeper, Detroit 500HP, 18 Speed Manual

Newly Listed

$59,500 USD

2011 Western Star 4900SA, 500 hp Detroit DD15, 18 spd Overdrive transmission with 4.30 gears in 46k rear ends with full lockers. 16K front axle and #13,200 steerable lift. 2 Line wet kit

Condition	Used
Usage	10,656 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Detroit DD15
Drivetrain	8x4
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Suspension	Air Ride
Rear Axle	Tri Axle
Rear End	59,200 lb
Stock Number	BTS8704
MLS Number	14088452
Category	Sleeper Semi Trucks
Last Updated	1/15/2026
Location	Great Falls, MT, US
Sold By	Bouma Truck Sales

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2025 Western Star 49X Sleeper Semi Truck - Flat Top Sleeper, Detroit 600HP, 18 Speed Manual

2025 Western Star 49X Sleeper Semi Truck - 36" Flat Top Sleeper, Detroit 600HP, 18 Speed Manual

2016 Freightliner Coronado 122 SD Sleeper Semi Truck - Flat Top Sleeper, Detroit 455HP, 13 Speed Manual

2022 Western Star 4900FA Sleeper Semi Truck - 42" Flat Top Sleeper, Detroit 560HP, 18 Speed Manual

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Transmission modelRTLO-20918B, ALUMINIUM HEADACHE RACK, ESPAR, BEACONS LIGHT, WET KIT,

Condition	Used
Usage	8,477 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	560 HP
Engine Model	Detroit DD16
Drivetrain	6x4
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	42"
Suspension	Hendrickson PRIMAAX
Rear Axle	Tandem Axle
Rear End	46,000 lb 3.91 ratio
Stock Number	C-37148
MLS Number	14077726
Category	Sleeper Semi Trucks
Last Updated	1/8/2026
Location	Montreal/ Ile-aux-noix/Toronto/NY, QC, Canada
Sold By	Gamache Truck Center

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2025 Western Star 49X Sleeper Semi Truck - Detroit 600HP, 18 Speed Manual

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1356 Miles, Engine: DETROIT DD16, 600 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Spring Suspension, Sleeper Type: Flat Top Sleeper, Sleeper Size: 36, Tires: 11R24.5,...

Condition	New
Usage	1,356 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	600 HP
Engine Model	Detroit DD16
Drivetrain	6x4
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	36"
Suspension	Spring
Rear Axle	Tandem Axle
Rear End	46,000 lb
Stock Number	WS4899
MLS Number	13171682
Category	Sleeper Semi Trucks
Last Updated	1/14/2026
Location	Fort Kent, ME, US
Sold By	Freightliner of Maine

(833) 932-___ SHOW
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2025 Western Star 49X Sleeper Semi Truck - Detroit 600HP, 18 Speed Manual

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1384 Miles, Engine: DETROIT DD16, 600 HP, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 6x4, Spring Suspension, Sleeper Type: Flat Top Sleeper, Sleeper Size: 36, Tires: 11R24.5,...

Condition	New
Usage	1,384 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	600 HP
Engine Model	Detroit DD16
Drivetrain	6x4
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	36"
Suspension	Spring
Rear Axle	Tandem Axle
Rear End	46,000 lb 4.30 ratio
Stock Number	WS4852
MLS Number	13038859
Category	Sleeper Semi Trucks
Last Updated	1/14/2026
Location	Fort Kent, ME, US
Sold By	Freightliner of Maine

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2019 Western Star 4900EX Tri Axle Sleeper Semi Truck - Detroit

Price Drop $114,900 USD

378688 Miles, Engine: DETROIT DD16, Fuel Type: Diesel, 18 Speed Manual Transmission, Drive: 8x4, Sleeper Type: Flat Top Sleeper, Sleeper Size: 54, Wheel Base: 272, Tri Rear Axles, Front Axle...

Condition	Used
Usage	378,688 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Engine Model	Detroit DD16
Drivetrain	8x4
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	54"
Rear Axle	Tri Axle
Rear End	46,000 lb 4.10 ratio
Stock Number	347449
MLS Number	13556811
Category	Sleeper Semi Trucks
Last Updated	1/6/2026
Location	Manchester, NH, US
Sold By	Allegiance Trucks

(844) 435-___ SHOW
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2015 Western Star 4900 Tri Axle Sleeper Semi Truck - 28" Flat Top Sleeper, Detroit 600HP, 18 Speed Manual

$68,500 USD

3W EQUIPMENT INVENTORY CHANGING DAILY - CALL AHEAD!! LOW RATE FINANCING FOR BUSINESS AND INDIVIDUALS! DON'T MISS THIS ONE!!! SUPER LOW MILEAGE AND HOURS!!! (DELETED) 2015 WESTERN STAR...

Condition	Used
Usage	2,173 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	600 HP
Engine Model	Detroit DD16
Drivetrain	8x4
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	28"
Suspension	AirLiner
Rear Axle	Tri Axle
Rear End	46,000 lb 4.30 ratio
Stock Number	GK6603
MLS Number	14064705
Category	Sleeper Semi Trucks
Last Updated	12/31/2025
Location	HOT SPRINGS, AR, US
Sold By	3W Equipment

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2015 Freightliner Coronado 122 SD Sleeper Semi Truck - 42" Flat Top Sleeper, Detroit 450HP, 10 Speed Manual

$28,000 USD

NICE TRUCK, RUNS EXCELLENT, WET KIT, DUAL EXHAUST, FULL LOCKING REARS, DUMP VALVE, SLIDING 5TH, POWER WINDOWS, POWER MIRRORS, HEATED MIRRORS, SUPER NICE TRUCK! *SOUTHERN TRUCK/ NOT RUSTY!,

Condition	Used
Usage	813,601 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	10 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	42"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.42 ratio
Stock Number	15DET813FLATCOR
MLS Number	14053841
Category	Sleeper Semi Trucks
Last Updated	12/20/2025
Location	Covington, TN, US
Sold By	Don Baskin Truck Sales

(833) 801-___ SHOW
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2019 Freightliner Cascadia 125 Tri Axle Sleeper Semi Truck - Flat Top Sleeper, Detroit 505HP, 10 Speed Manual

$54,500 USD

JUST IN!!! 2019 Freightliner Cascadia, #13,200 Factory Steerable Lift Axle, Detroit DD15, 505 HP, 10 Speed Manual Transmission. 260" WHEEL BASE. 3.55 REAR ENDS, Aluminum Wheels, Jake Brake,...

Condition	Used
Usage	469,236 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	8x4
Transmission	10 Speed Manual
Sleeper Type	Flat Top Sleeper
Suspension	Air Ride
Rear Axle	Tri Axle
Rear End	53,500 lb 3.55 ratio
Stock Number	BTS8277
MLS Number	14053730
Category	Sleeper Semi Trucks
Last Updated	12/20/2025
Location	Great Falls, MT, US
Sold By	Bouma Truck Sales

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2021 Freightliner Coronado 122 SD Sleeper Semi Truck - Flat Top Sleeper, Detroit 505HP, 10 Speed Manual

$79,750 USD

Only 297,000 Original Miles ~ Detroit DD15 ~ 505 HP ~ 10 Speed ~ Full Lockers ~ Wet Kit ~ All Aluminum Wheels ~ Financing Available with Your Good Credit,

Condition	Used
Usage	297,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Transmission	10 Speed Manual
Sleeper Type	Flat Top Sleeper
Rear Axle	Tandem Axle
Rear End	40,000 lb
Stock Number	MZ3656
MLS Number	13996509
Category	Sleeper Semi Trucks
Last Updated	12/19/2025
Location	Olive Branch, MS, US
Sold By	Truck Market

(844) 955-___ SHOW
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1994 Peterbilt 378 Tri Axle Sleeper Semi Truck - 36" Flat Top Sleeper, Detroit 450HP, 18 Speed Manual

$57,500 USD

1994 Peterbilt 378, PRE-EMISSION, New Crate Motor Detroit 60 Series engine installed 170,000 miles ago w/paperwork, 450 HP, Reman 18 Speed Manual Transmission installed 170,000 miles ago...

Condition	Used
Usage	1,000,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit SERIES 60 12.7 DDEC III
Drivetrain	8x4
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	36"
Suspension	Air Ride
Rear Axle	Tri Axle
Rear End	52,500 lb 3.90 ratio
Stock Number	BTS3930
MLS Number	14049336
Category	Sleeper Semi Trucks
Last Updated	12/18/2025
Location	Great Falls, MT, US
Sold By	Bouma Truck Sales

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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

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2020 Freightliner Cascadia 116 Sleeper Semi Truck - 42" Flat Top Sleeper, Detroit 450HP, 12 Speed Dt12 Automatic

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2020 Freightliner Cascadia 116 – Fleet Maintained Ready to Roll Stock #6830 Super Light Super clean fleet-maintained Cascadia with great miles and all the right specs for a starter truck...

Condition	Used
Usage	513,791 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	Flat Top Sleeper
Sleeper Size	42"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.08 ratio
Stock Number	6830
MLS Number	13879664
Category	Sleeper Semi Trucks
Last Updated	1/15/2026
Location	Palmetto, GA, US
Sold By	7E Truck Sales, LLC

(833) 478-___ SHOW
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2013 Freightliner Cascadia 125 Sleeper Semi Truck - Flat Top Sleeper, Detroit 475HP, 10 Speed Manual

$8,500 USD

Truck came in on trade. Has a cylinder leaking coolant into engine. Can be bought as is until we have time to fix it

Condition	Used
Usage	520,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	475 HP
Engine Model	Detroit DD15
Drivetrain	6x4
Transmission	10 Speed Manual
Sleeper Type	Flat Top Sleeper
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.55 ratio
Stock Number	BTS5766
MLS Number	13760569
Category	Sleeper Semi Trucks
Last Updated	12/4/2025
Location	Great Falls, MT, US
Sold By	Bouma Truck Sales

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2010 Freightliner Columbia 120 Sleeper Semi Truck - 36" Flat Top Sleeper, Detroit 500HP, 18 Speed Manual

$38,750 USD

FREIGHTLINER COLUMBIA 120 MID ROOF, 12.7 DETRIOT 500 HP, EATON FULLER 18 SPD, GOOD CLUTCH COLD A/C, FLEET MAINTAINED, SHORT BUNK, WET KIT 2 LINE DUMP VALVE, FULL OCKERS, GOOD TRUCK READY TO...

Condition	Used
Usage	1,105,000 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	500 HP
Engine Model	Detroit SERIES 60 12.7 DDEC III
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	36"
Stock Number	#7661
MLS Number	12232762
Category	Sleeper Semi Trucks
Last Updated	11/8/2025
Location	Holland, MI, US
Sold By	HES Equipment / A&B Farms

(844) 656-___ SHOW
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2012 Western Star 4900 Tri Axle Sleeper Semi Truck - 36" Flat Top Sleeper, Detroit 560HP, 18 Speed Manual

$59,900 USD

2012 Western Star 4900, only 24,700 miles, 7816 hrs, DD15 Detroit 560 hp, 18 speed, airliner susp, 20K pusher, 4.10 ratio, 245 wb, headache rack, set up for lowboy,,

Condition	Used
Usage	7,816 Hours
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	560 HP
Engine Model	Detroit DD15
Drivetrain	8x4
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	36"
Suspension	AirLiner
Rear Axle	Tri Axle
Rear End	46,000 lb 4.10 ratio
MLS Number	13791530
Category	Sleeper Semi Trucks
Last Updated	10/18/2025
Location	WINGER, MN, US
Sold By	Lucken Trucks and Parts

(833) 637-___ SHOW
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2023 Freightliner Coronado 122 SD Sleeper Semi Truck - Flat Top Sleeper, Detroit 505HP, 10 Speed Manual

$120,000 USD

Excellent Shape Ready for work, New Dual Tires,

Condition	Used
Usage	233,427 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	10 Speed Manual
Sleeper Type	Flat Top Sleeper
Suspension	AirLiner
Rear Axle	Tandem Axle
Rear End	40,000 lb
MLS Number	13906294
Category	Sleeper Semi Trucks
Last Updated	10/17/2025
Location	Santa Rosa, CA, US
Sold By	Personal Asset Brokerage

(707) 849-___ SHOW
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2016 Western Star 4900 Tri Axle Sleeper Semi Truck - 42" Flat Top Sleeper, Detroit 561HP, 18 Speed Manual

$77,500 USD

2016 Western Star 4900, Reman Detroit DD16 in May 2024, 18 speed with 2 speed rears, Full double frame, Full locking rears, 20k front with dual boxes, 20k pusher, 46k rears, Nationwide...

Condition	Used
Usage	537,788 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	561 HP
Engine Model	Detroit DD16
Drivetrain	8x4
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	42"
Suspension	Neway
Rear Axle	Tri Axle
Rear End	66,000 lb 4.10 ratio
Stock Number	8326
MLS Number	13777303
Category	Sleeper Semi Trucks
Last Updated	8/23/2025
Location	Sawyer, KS, US
Sold By	The Wrays, LLC

(833) 904-___ SHOW
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2013 Western Star 4900 Sleeper Semi Truck - 42" Flat Top Sleeper, Detroit 450HP, 10 Speed Manual

$34,500 USD

2013 Western Star 4900SB Sleeper, 450hp Detroit DD13, 10spd Manual, Air ride suspension, 319k Mi, Nationwide Delivery Available

Condition	Used
Usage	318,897 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	450 HP
Engine Model	Detroit DD13
Drivetrain	6x4
Transmission	10 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	42"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 3.73 ratio
Stock Number	4847
MLS Number	13762848
Category	Sleeper Semi Trucks
Last Updated	8/15/2025
Location	Sawyer, KS, US
Sold By	The Wrays, LLC

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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

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2012 Western Star 4900 Tri Axle Sleeper Semi Truck - 28" Flat Top Sleeper, Detroit 505HP, 18 Speed Manual

$49,900 USD

2012 Western Star 4900SA, 246,500 miles, DD15-505 hp, Eaton RTLO18918B 18 speed, 4.30 ratio, 244 wb, 14,320 front, 46,000 rears, 12,000 pusher, 180 Gal Fuel cap, Nice heavy truck in great...

Condition	Used
Usage	246,245 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	505 HP
Engine Model	Detroit DD15
Drivetrain	8x4
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	28"
Suspension	AirLiner
Rear Axle	Tri Axle
Rear End	46,000 lb 4.30 ratio
MLS Number	13542225
Category	Sleeper Semi Trucks
Last Updated	6/25/2025
Location	WINGER, MN, US
Sold By	Lucken Trucks and Parts

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Condition	New
Usage	1,266 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	600 HP
Engine Model	Detroit DD16
Drivetrain	6x4
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	36"
Suspension	Spring
Rear Axle	Tandem Axle
Rear End	46,000 lb 4.30 ratio
Stock Number	WS4898
MLS Number	13218645
Category	Sleeper Semi Trucks
Last Updated	1/14/2026
Location	Houlton, ME, US
Sold By	Freightliner of Maine

Condition	New
Usage	914 Miles
Duty Class	Heavy Duty Sleeper Semi Truck
Horse Power	600 HP
Engine Model	Detroit DD16
Drivetrain	6x4
Transmission	18 Speed Manual
Sleeper Type	Flat Top Sleeper
Sleeper Size	36"
Suspension	Spring
Rear Axle	Tandem Axle
Rear End	46,000 lb 4.30 ratio
Stock Number	WS4863
MLS Number	13056867
Category	Sleeper Semi Trucks
Last Updated	1/14/2026
Location	Fort Kent, ME, US
Sold By	Freightliner of Maine

Flat Top Sleeper Semi Trucks with Detroit Engines For Sale

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