Heavy Duty Flatbed Trucks with 4.00-0.00 Ratio For Sale

Your Current Search

Industry
Trucks

Category
Flatbed Trucks

GVWR Category
Heavy Duty

Ratio
4.00 - 0.00

Click the to remove the filter.

Save Search

Email Alert

What's Save Search and Email Alert?

Narrow Your Search

Keyword Search

Search within the selected criteria

Industry

2017 Freightliner M2 Tandem Axle 24 ft Flatbed Truck - 300HP, 10 Speed Manual

$60,500 USD

Forklift hanger 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;...

Condition	Used
Usage	254,865 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	24 ft.
Horse Power	300 HP
Engine Model	Cummins ISL
Transmission	10 Speed Manual
Sleeper Size	0"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.11 ratio
Stock Number	214195
MLS Number	13442133
Category	Flatbed Trucks
Last Updated	3/28/2025
Location	Fresno, CA, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

27 0

2025 Kenworth T880 Tandem Axle 24 ft Flatbed Truck - 450HP, 6 Speed Allison Rds Automatic

$189,995 USD

2025 Kenworth T880 Cummins X15 450 HP @ 1,900 RPM, 1,750 lb.ft. torque @ 900 RPM, Productivity Series Allison 4000RDS 6-speed automatic transmission PACCAR front axle, 20,000 lbs....

Condition	New
Usage	318 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	24 ft.
Horse Power	450 HP
Engine Model	Cummins X15
Drivetrain	6x4
Transmission	6 Speed Allison RDS Automatic
Suspension	Hendrickson HMX460
Rear Axle	Tandem Axle
Rear End	46,000 lb 4.56 ratio
Stock Number	KF128757
MLS Number	13385779
Category	Flatbed Trucks
Last Updated	3/11/2025
Location	Fort Lauderdale, FL, US
Sold By	All Roads Trucks

(954) 523-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

20 0

2017 Freightliner M2 Tandem Axle Flatbed Truck - 350HP, 6 Speed Automatic

$72,750 USD

Equipped with Forklift package- M55 M70 Z2-3TX Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We...

Condition	Used
Usage	159,381 Miles
Duty Class	Heavy Duty Flatbed Truck
Horse Power	350 HP
Engine Model	Cummins ISL
Transmission	6 Speed Automatic
Sleeper Size	0"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.88 ratio
Stock Number	250492
MLS Number	13440349
Category	Flatbed Trucks
Last Updated	3/15/2025
Location	Kansas City, MO, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

27 0

2018 Freightliner M2 Tandem Axle 26 ft Flatbed Truck - 300HP, 6 Speed Automatic

$59,000 USD

SAF-T-CART 10-PALLET BODY Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive...

Condition	Used
Usage	288,045 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	26 ft.
Horse Power	300 HP
Engine Model	Cummins L9
Transmission	6 Speed Automatic
Sleeper Size	0"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.63 ratio
Stock Number	177799
MLS Number	13436775
Category	Flatbed Trucks
Last Updated	3/26/2025
Location	Little Rock, AR, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

11 0

2017 Freightliner M2 106 Tandem Axle 24 ft Flatbed Truck - 270HP, 6 Speed Automatic

$51,995 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	317,839 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	24 ft.
Horse Power	270 HP
Engine Model	ISL'13 270/2000
Transmission	6 Speed Automatic
Suspension	Leaf Springs
Rear Axle	Tandem Axle
Rear End	5.86 ratio
Stock Number	672791
MLS Number	13225254
Category	Flatbed Trucks
Last Updated	3/12/2025
Location	Jacksonville, FL, US
Sold By	Ryder

(844) 385-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

38 0

2018 Freightliner M2 106 Tandem Axle 24 ft Flatbed Truck - 350HP, 6 Speed Automatic

$79,500 USD

2018 Freightliner M2-106 Tandem Axle Flatbed, 8.9L Cummins ISL Diesel Engine, 350 HP, Exhaust Brake, Allison 6 Speed Automatic Transmission, 124,561 ECM Verified Miles 4,897 ECM Verified...

Condition	Used
Usage	4,897 Hours
Duty Class	Heavy Duty Flatbed Truck
Bed Length	24 ft.
Horse Power	350 HP
Engine Model	Cummins ISL
Drivetrain	6x4
Transmission	6 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 5.29 ratio
Winch	Yes
Stock Number	T16984D
MLS Number	13393857
Category	Flatbed Trucks
Last Updated	3/8/2025
Location	Denver, CO, US
Sold By	DTI Trucks

(855) 653-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

26 0

2011 International WorkStar 7500 13 ft Flatbed Truck - 315HP, 5 Speed Allison Rds Automatic

Call for price

2011 International 7500 4 x 4 single axle truck #5271; Vin #1HTWEAZR9BJ319254, , Maxxforce 9-315 horsepower turbo diesel with engine brake, , Allison 3000- RDSP; 5 speed automatic...

Condition	Used
Usage	6,535 Hours
Duty Class	Heavy Duty Flatbed Truck
Bed Length	13 ft.
Horse Power	315 HP
Engine Model	International MAXXFORCE 9
Drivetrain	4x4
Transmission	5 Speed Allison RDS Automatic
Suspension	Spring
Rear Axle	Single Axle
Rear End	21,000 lb 4.88 ratio
Stock Number	5271A
MLS Number	13433994
Category	Flatbed Trucks
Last Updated	3/6/2025
Location	Pacific, WA, US
Sold By	Puget Sound Truck Sales, Inc.

(844) 716-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

26 0

2018 Freightliner M2 Tandem Axle 24 ft Flatbed Truck - 350HP, 6 Speed Automatic

$71,250 USD

EQUIPPED W/ MOFFETT FORKLIFT HANGER - M45 M70 Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We...

Condition	Used
Usage	189,609 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	24 ft.
Horse Power	350 HP
Engine Model	Cummins L9
Transmission	6 Speed Automatic
Sleeper Size	0"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 5.29 ratio
Stock Number	201680
MLS Number	13433165
Category	Flatbed Trucks
Last Updated	3/26/2025
Location	Garland, TX, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

24 0

2017 Freightliner M2 Tandem Axle 24 ft Flatbed Truck - 300HP, 10 Speed Manual

$70,250 USD

EQUIPPED WITH MOFFETT FORKLIFTKIT WHELEN LIGHTBAR Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We...

Condition	Used
Usage	143,874 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	24 ft.
Horse Power	300 HP
Engine Model	Cummins ISL
Transmission	10 Speed Manual
Sleeper Size	0"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.11 ratio
Stock Number	229595
MLS Number	13405323
Category	Flatbed Trucks
Last Updated	3/6/2025
Location	Akron, OH, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

25 0

2015 Freightliner M2 Tandem Axle 20 ft Flatbed Truck - 260HP, 6 Speed Automatic

$34,250 USD

(4) SWING GATES PER SIDE - 47"H X 51" W Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer...

Condition	Used
Usage	315,867 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	20 ft.
Horse Power	260 HP
Engine Model	Cummins ISL
Transmission	6 Speed Automatic
Sleeper Size	0"
Suspension	Spring
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.63 ratio
Stock Number	698198
MLS Number	13433092
Category	Flatbed Trucks
Last Updated	3/7/2025
Location	Torrance, CA, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

40 1

2018 Freightliner M2 106 Tandem Axle 24 ft Flatbed Truck - 350HP, 6 Speed Allison Hs Automatic

$69,500 USD

2018 Freightliner M2-106 Tandem Axle Flatbed, 8.9L Cummins ISL Diesel Engine, 350 HP, Exhaust Brake, Allison 6 Speed Automatic Transmission, 168,112 ECM Verified Miles 6,848 ECM Verified...

Condition	Used
Usage	6,848 Hours
Duty Class	Heavy Duty Flatbed Truck
Bed Length	24 ft.
Horse Power	350 HP
Engine Model	Cummins ISL
Drivetrain	6x4
Transmission	6 Speed Allison HS Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 5.29 ratio
Winch	Yes
Stock Number	T16983D
MLS Number	13431529
Category	Flatbed Trucks
Last Updated	3/5/2025
Location	Denver, CO, US
Sold By	DTI Trucks

(855) 653-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

21 0

2019 International 4400 Tandem Axle 25 ft Flatbed Truck - 300HP, 6 Speed Automatic

$84,000 USD

EQUIPPED WITH MOFFETT FORKLIFTMOUNTING KIT - M55 Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We...

Condition	Used
Usage	159,380 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	25 ft.
Horse Power	300 HP
Engine Model	Cummins L9
Transmission	6 Speed Automatic
Sleeper Size	0"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 5.29 ratio
Stock Number	206330
MLS Number	13430355
Category	Flatbed Trucks
Last Updated	3/27/2025
Location	Memphis, TN, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

29 0

2017 Freightliner 114SD Tandem Axle Flatbed Truck - 450HP, 10 Speed Manual

$110,000 USD

LEDWELL CHEMICAL STAKE FLATBED- HAS PUMPS HOT SHIFT PTO Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being...

Condition	Used
Usage	198,499 Miles
Duty Class	Heavy Duty Flatbed Truck
Horse Power	450 HP
Engine Model	DD13
Transmission	10 Speed Manual
Sleeper Size	0"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	46,000 lb 4.11 ratio
Stock Number	184562
MLS Number	13430251
Category	Flatbed Trucks
Last Updated	3/26/2025
Location	Longview, TX, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

22 0

2016 Freightliner M2 Tandem Axle 24 ft Flatbed Truck - 350HP, 6 Speed Automatic

$48,250 USD

Equipped with Forklift Package Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer competitive...

Condition	Used
Usage	353,351 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	24 ft.
Horse Power	350 HP
Engine Model	Cummins ISL
Transmission	6 Speed Automatic
Sleeper Size	0"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	44,000 lb 4.88 ratio
Stock Number	140601
MLS Number	13400475
Category	Flatbed Trucks
Last Updated	3/5/2025
Location	San Antonio, TX, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

26 0

2015 Freightliner M2 Tandem Axle 20 ft Flatbed Truck - 260HP, 6 Speed Automatic

$48,500 USD

(4) SWING GATES PER SIDE - 47"H X 51" W Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained. We offer...

Condition	Used
Usage	192,384 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	20 ft.
Horse Power	260 HP
Engine Model	Cummins ISL
Transmission	6 Speed Automatic
Sleeper Size	0"
Suspension	Spring
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.63 ratio
Stock Number	698197
MLS Number	13430221
Category	Flatbed Trucks
Last Updated	3/6/2025
Location	Torrance, CA, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

26 0

2020 Freightliner M2 Tandem Axle 26 ft Flatbed Truck - 300HP, 6 Speed Automatic

$79,500 USD

Equipped with Dump Flatbed Body - CRYSTEEL 7700 HOIST Purchase your vehicle from the leader in the leasing industry. Penske vehicles have the reputation of quality and being well-maintained....

Condition	Used
Usage	210,391 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	26 ft.
Horse Power	300 HP
Engine Model	Cummins L9
Transmission	6 Speed Automatic
Sleeper Size	0"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 5.29 ratio
Stock Number	348815
MLS Number	13421341
Category	Flatbed Trucks
Last Updated	2/28/2025
Location	Katy, TX, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

28 0

2011 Freightliner M2 106 Flatbed Truck - 240HP, Liftgate

$49,500 USD

Nice price on a good truck. A 2011 Freightliner with a 24-foot flatbed and a liftgate is for sale. The truck has a new Reman motor engine with paperwork, and nothing needs to be done on the...

Condition	Used
Usage	168,033 Miles
Duty Class	Heavy Duty Flatbed Truck
Horse Power	240 HP
Engine Model	Cummins ISB
Drivetrain	4x2
Transmission	5 Speed
Suspension	4 Spring
Rear Axle	Single Axle
Rear End	21,000 lb 5.29 ratio
Liftgate	Yes
Stock Number	AW3473
MLS Number	13189033
Category	Flatbed Trucks
Last Updated	2/26/2025
Location	Midvale, UT, US
Sold By	MTS Utah, Inc.

(844) 445-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

22 0

2019 Freightliner M2 Tandem Axle 26 ft Flatbed Truck - 350HP, 6 Speed Automatic

Price Drop

$61,250 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;...

Condition	Used
Usage	230,040 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	26 ft.
Horse Power	350 HP
Engine Model	Cummins L9
Transmission	6 Speed Automatic
Sleeper Size	0"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.88 ratio
Stock Number	257832
MLS Number	13395810
Category	Flatbed Trucks
Last Updated	3/26/2025
Location	Binghamton, NY, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

26 0

2018 Freightliner M2 Tandem Axle 22 ft Flatbed Truck - 270HP, 6 Speed Automatic

Price Drop

$54,500 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;...

Condition	Used
Usage	163,349 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	22 ft.
Horse Power	270 HP
Engine Model	Cummins L9
Transmission	6 Speed Automatic
Sleeper Size	0"
Suspension	Spring
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.63 ratio
Stock Number	183603
MLS Number	13415207
Category	Flatbed Trucks
Last Updated	3/26/2025
Location	Norton, MA, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

13 0

2019 Freightliner M2 106 Tandem Axle 26 ft Flatbed Truck - 270HP, 6 Speed Automatic

Price Drop

$40,495 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	429,005 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	26 ft.
Horse Power	270 HP
Engine Model	L9'17 270/2000
Transmission	6 Speed Automatic
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	5.86 ratio
Stock Number	843922
MLS Number	13260197
Category	Flatbed Trucks
Last Updated	3/27/2025
Location	Springfield, MA, US
Sold By	Ryder

(844) 385-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

24 1

2017 Freightliner M2 106 Tandem Axle 24 ft Flatbed Truck - 330HP, 10 Speed Manual

$89,900 USD

2017 FREIGHTLINER M2 WITH 218135 MILES, ISL CUMMINS DIESEL ENGINE, 330 HP, EATON 10 SPEED FRO14210 TRANSMISSION, 24X102 FLATBED WITH MOFFETT KIT, 274" WHEELBASE, DIFF LOCK, POWER STEERING,...

Condition	Used
Usage	218,135 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	24 ft.
Horse Power	330 HP
Engine Model	Cummins ISL
Transmission	10 Speed Manual
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.11 ratio
Winch	Yes
Stock Number	8090
MLS Number	13314479
Category	Flatbed Trucks
Last Updated	2/20/2025
Location	Tuscaloosa, AL, US
Sold By	Bobby Park Truck and Equipment Inc.

(844) 913-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

20 0

2016 Freightliner M2 Tandem Axle 28 ft Flatbed Truck - 350HP, 10 Speed Manual

$50,750 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;...

Condition	Used
Usage	266,200 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	28 ft.
Horse Power	350 HP
Engine Model	Cummins ISL
Transmission	10 Speed Manual
Sleeper Size	0"
Suspension	Air Ride
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.11 ratio
Stock Number	142805
MLS Number	13405306
Category	Flatbed Trucks
Last Updated	2/19/2025
Location	Kansas City, MO, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

28 0

2014 Freightliner M2 Tandem Axle Flatbed Truck - 300HP, 10 Speed Manual

$35,000 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;...

Condition	Used
Usage	281,183 Miles
Duty Class	Heavy Duty Flatbed Truck
Horse Power	300 HP
Engine Model	Cummins ISL
Transmission	10 Speed Manual
Sleeper Size	0"
Suspension	Spring
Rear Axle	Tandem Axle
Rear End	40,000 lb 4.63 ratio
Stock Number	717998
MLS Number	13403549
Category	Flatbed Trucks
Last Updated	2/19/2025
Location	Comstock Park, MI, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

13 0

2017 Freightliner M2 106 22 ft Flatbed Truck - 280HP, 6 Speed Automatic

$46,404 USD

*Nothing displayed on this site is an offer to sell approval or commitment to sell or guaranty of availability. Actual vehicle descriptions including mileage and age and offer price are...

Condition	Used
Usage	307,885 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	22 ft.
Horse Power	280 HP
Engine Model	ISB'13 280/2300
Transmission	6 Speed Automatic
Suspension	Leaf Springs
Rear Axle	Single Axle
Rear End	5.88 ratio
Stock Number	668915
MLS Number	13301111
Category	Flatbed Trucks
Last Updated	2/17/2025
Location	Springfield, MA, US
Sold By	Ryder

(844) 385-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

22 0

2019 Freightliner M2 Tandem Axle 28 ft Flatbed Truck - 300HP, 6 Speed Automatic

$67,000 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;...

Condition	Used
Usage	168,331 Miles
Duty Class	Heavy Duty Flatbed Truck
Bed Length	28 ft.
Horse Power	300 HP
Engine Model	Cummins L9
Transmission	6 Speed Automatic
Sleeper Size	0"
Suspension	Spring
Rear Axle	Tandem Axle
Rear End	40,000 lb 5.29 ratio
Stock Number	268621
MLS Number	13397895
Category	Flatbed Trucks
Last Updated	2/15/2025
Location	Warren, MI, US
Sold By	Penske Used Trucks

(855) 942-___ SHOW
NUMBERCall Seller

Email Seller

Save

More Info

Penske Used Trucks

All Roads Trucks

Penske Used Trucks

Penske Used Trucks

Ryder

DTI Trucks

Puget Sound Truck Sales, Inc.

Penske Used Trucks

Penske Used Trucks

Penske Used Trucks

DTI Trucks

Penske Used Trucks

Penske Used Trucks

Penske Used Trucks

Penske Used Trucks

Penske Used Trucks

MTS Utah, Inc.

Penske Used Trucks

Penske Used Trucks

Ryder

Bobby Park Truck and Equipment Inc.

Penske Used Trucks

Penske Used Trucks

Ryder

Penske Used Trucks