Saved
0
My Account
Sign in
Sign up
Control Center
Dashboard
Buyer Tools
Saved Listings
0
Compare Saved Listings
Saved Searches
0
My Little Salesman
Sign up
Saved
0
My Account
Sign in
Sign up
Control Center
Dashboard
Buyer Tools
Saved Listings
0
Compare Saved Listings
Saved Searches
0
Price Alerts
0
For Sale
Commercial Trucks
Trailers
Construction Equipment
Farm Equipment
Lifting Equipment
Logging Equipment
Heavy Duty Truck Parts
Heavy Equipment & Tractor Parts
Trailer Parts
Attachments
Aggregate & Mining Equipment
Biomass & Recycling Equipment
Woodworking & Sawmill Equipment
Industrial Equipment
Recreation & Utility Vehicles
Cars & SUVs
Lawn & Garden
Tools & Material
My Little Salesman Magazine
March 2025
For Rent
Commercial Trucks
Trailers
Construction Equipment
Logging Equipment
Farm Equipment
Lifting Equipment
Attachments
Aggregate & Mining Equipment
Biomass & Recycling Equipment
Industrial Equipment
Recreation & Utility Vehicles
Sell
Place an Online Listing
Individual listings are the perfect selling solution for individuals or dealers with 15 items or less.
Inventory Mover Package
The inventory selling solution for dealers, manufacturers, and auctioneers with 15+ items.
Print Advertising
Effective industry-trusted advertising, reliably delivered to your targeted buyer.
Online Banner Advertising
Effectively reach buyers in your market as they browse listings within a category or specific manufacturer.
Facebook Marketing
Beautiful campaigns with pinpointed audiences that drive traffic and boosts sales.
Wholesale Marketplace
Buy and sell inventory amongst other registered dealers at wholesale prices.
Services
Dealer Management System (DMS)
One powerful suite of tools to maximize your dealership.
Inventory Management
Easy-to-use cloud-based inventory management with export feeds and accessible from anywhere.
Customer Relationship Management (CRM)
Customers, vendors, prospects, and correspondence in one place, integrated with your inventory.
Lead Management
One dashboard that intelligently connects your inventory, contacts, and leads from all your marketing channels.
Invoicing & Sales Management
Effortlessly turn leads into deals with auto-populated quotes, invoices, and custom contract forms.
Dealership Websites
User-friendly, mobile-responsive, search-engine optimized websites for commercial truck, trailer, heavy equipment, and parts dealers.
Sell Your Inventory
The inventory selling solution to reach hundreds of thousands of buyers, with no contract or commitments.
Facebook Marketing
Beautiful campaigns with pinpointed audiences that drive traffic and boosts sales.
Wanted
Auctions
Financing
Industry
News
Latest Equipment News
Construction Equipment News
Farm Equipment News
Forestry Equipment News
Trucking News
Trailer News
Material Handling News
Drilling & Mining Equipment News
Companies
All Companies
Dealers
Manufacturers
Auctioneers
Transport Companies
Resources
Trade Shows & Events
Industry Services
Appraisals
Associations
Financing and Leasing (Heavy Equipment)
Financing and Leasing (Commercial Trucks)
Inspections
Insurance
Transportation and Shipping
All Guides & Advice
Buying Guides
Construction Equipment Buying Guide
Semi Truck Buying Guide
Backhoe Buying Guide
Dump Truck Buying Guide
Skid Steer Buying Guide
Excavator Buying Guide
Box Truck Buying Guide
Info
Subscription Center
Help Center
Contact Us
Virtual Demonstration
About Us
Testimonials
Our History
Fraud Prevention
Home
Listings
Truck Parts
Engines
Mack
Used
Used Mack Engines with 300-349 HP For Sale
Filter
6
Sort
Close
Your Current Search
Industry
Truck Parts
Category
Engines
Manufacturer
Mack
Horsepower
300 - 349 HP
Condition
Used
Market Type
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
Truck Parts
(188)
Category
Engines
(188)
Engine Cores
(5)
Manufacturer
Mack
(188)
Model
676
(2)
AC
(1)
AI
(2)
AI300
(1)
AI-300A
(2)
AMI-335
(2)
E6
(5)
E6-350
(1)
E7
(65)
E7 / EM7
(1)
E7 E-Tech
(2)
E7 Mechanical
(3)
E7-300
(16)
E7-350
(10)
EM6
(5)
EM7
(15)
EM7 E-Tech
(2)
EMC6
(1)
ENDT 676
(1)
ETAZ673A
(1)
E-TEC
(1)
MP7
(68)
MP8
(9)
Other
(2)
See 9 more
Condition
Used
(188)
Model Year
-
Horsepower
-
Inspection Report
Yes
(0)
No
(188)
Warranty
Yes
(26)
No
(0)
Price
-
Country
United States
(187)
Canada
(1)
State / Region
Select a country to view available states.
Seller Type
(188)
Market Type
Close
Default Ranking
Year: Newest First
Year: Oldest First
Price: High to Low
Price: Low to High
Distance: Nearest First
Manufacturer: A-Z
Manufacturer: Z-A
Model: A-Z
Model: Z-A
Hours: High to Low
Hours: Low to High
Mileage: High to Low
Mileage: Low to High
Date Added: Newest First
Date Added: Oldest First
Stock Number: A-Z
Stock Number: Z-A
Photos First
Filter by Specs or Location
Location
California
Florida
Iowa
Maryland
Massachusetts
Minnesota
New Jersey
Ohio
Ontario
Pennsylvania
1-25 of 188 results
Sort by:
Default Ranking
Default Ranking
Distance: Nearest First
Year: Newest First
Year: Oldest First
Price: High to Low
Price: Low to High
Manufacturer: A-Z
Manufacturer: Z-A
Model: A-Z
Model: Z-A
Hours: High to Low
Hours: Low to High
Mileage: High to Low
Mileage: Low to High
Date Added: Newest First
Date Added: Oldest First
Stock Number: A-Z
Stock Number: Z-A
Photos First
1-25 of 188
results
9
0
2001 Mack E7 Engine, DRIVER SIDE ECM MOUNT
Recently Updated
Call for price
(GOOD USED) 2001 Mack E7-300 E-TECH Diesel Engine For Sale, 300HP @ 1950RPM, DRIVER SIDE ECM MOUNT, NON-EGR Model, ELECTRONIC, Engine Family 1MKXH11.9V60, 11GBA 7029YP1, Engine Serial#...
Condition
Used
Horse Power
300 HP
Part Number
E7-300 E-TECH
Stock Number
2043
MLS Number
10499424
Category
Engines
Last Updated
3/3/2025
Location
Opa Locka, FL, US
Sold By
CA Truck Parts Inc.
(305) 688-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
2011 Mack MP7 Engine
Newly Listed
$6,800 USD
Good running Mack MP7 engine assembly. 228,015 Miles. 8,948 Hours. 75 PSI oil pressure. Damaged valve cover. 120 Day guarantee.
Condition
Used
Horse Power
325 HP
Fits To Make(s)
MACK
Fits To Model(s)
MP7
Stock Number
1055772
MLS Number
13426303
Category
Engines
Last Updated
3/1/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
2015 Mack MP7 Engine
Newly Listed
$7,050 USD
Good running Mack MP7 engine assembly. 132,353 Miles. 22,532 Hours. 50 PSI oil pressure. Slightly Burnt valve cover. 120 day guarantee.
Condition
Used
Horse Power
325 HP
Fits To Make(s)
MACK
Fits To Model(s)
MP7
Stock Number
1054620
MLS Number
13426298
Category
Engines
Last Updated
3/1/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
5
0
Mack E7 Mechanical Engine for a Mack E7-EM7 MECH
$4,325 USD
Condition
Used
CPL/ARR
11GBA24751P1
Horse Power
300 HP
Fits To Make(s)
MACK
Fits To Model(s)
E7-EM7 MECH
Stock Number
2490781
MLS Number
13400562
Category
Engines
Last Updated
2/15/2025
Location
Tampa, FL, US
Sold By
LKQ Heavy Truck
(855) 905-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
5
0
Mack E7 Mechanical Engine for a Mack E7-EM7 MECH
$4,325 USD
FRAME CUT WITH 392 / Allison HD4060P Serial 6610003658
Condition
Used
CPL/ARR
11GBA78961
Horse Power
300 HP
Fits To Make(s)
MACK
Fits To Model(s)
E7-EM7 MECH
Stock Number
2483057
MLS Number
13378395
Category
Engines
Last Updated
2/14/2025
Location
Tampa, FL, US
Sold By
LKQ Heavy Truck
(855) 905-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
6
0
Mack EM6 Engine for a Mack E-EM6 4 VALVE
$4,325 USD
FRAME CUT WITH 592 / HD4560P, T2090,
Condition
Used
CPL/ARR
11GBA58178P1
Horse Power
300 HP
Fits To Make(s)
MACK
Fits To Model(s)
E-EM6 4 VALVE
Stock Number
2483056
MLS Number
13378394
Category
Engines
Last Updated
2/12/2025
Location
Tampa, FL, US
Sold By
LKQ Heavy Truck
(855) 905-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
6
0
1992 Mack E7 Mechanical Engine for a Mack E7-EM7 MECH
$4,325 USD
Condition
Used
Usage
518,192 Miles
CPL/ARR
1T089
Horse Power
300 HP
Fits To Make(s)
MACK
Fits To Model(s)
E7-EM7 MECH
Stock Number
2313455
MLS Number
12571413
Category
Engines
Last Updated
2/8/2025
Location
Wykoff, MN, US
Sold By
LKQ Heavy Truck
(855) 905-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
6
0
2007 Mack MP7 Engine for a Mack MP7 EPA 07 (D11)
$7,305 USD
Condition
Used
Usage
329,754 Miles
Horse Power
340 HP
Fits To Make(s)
MACK
Fits To Model(s)
MP7 EPA 07 (D11)
Stock Number
2464839
MLS Number
13249956
Category
Engines
Last Updated
2/8/2025
Location
Toledo, OH, US
Sold By
LKQ Heavy Truck
(855) 905-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
12
0
2008 Mack MP7 Engine for a Mack MP7 EPA 07 (D11)
$7,305 USD
Condition
Used
Usage
617,412 Miles
Horse Power
325 HP
Fits To Make(s)
MACK
Fits To Model(s)
MP7 EPA 07 (D11)
Stock Number
2426123
MLS Number
12991559
Category
Engines
Last Updated
2/8/2025
Location
Toledo, OH, US
Sold By
LKQ Heavy Truck
(855) 905-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
4
0
2005 Mack AI-300A Engine for a Mack MR688S
$8,500 USD
Engine Details: Mack AI-300A without Engine Brake, ---, What You Get:, - Complete running Mack engine!, - Blowby: 1 Inch, - Air Compressor: Meritor/Wabco 318, - Camshaft Number:...
Condition
Used
Horse Power
300 HP
Fits To Make(s)
MACK
Fits To Model(s)
MR688S
Stock Number
25384
MLS Number
12910476
Category
Engines
Last Updated
2/4/2025
Location
Des Moines, IA, US
Sold By
Housby Used Parts
(855) 957-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
5
0
Mack EM7 E-Tech Engine - 300 HP
$4,250 USD
MACK EM7 300 ETECH ENGINE TAKEOUT TESTED 187K MILES 90 DAY NO CORE., Serial#: 9F1929, Horse Power: 300, Casting#: 9F1929
Condition
Used
Horse Power
300 HP
Stock Number
2224
MLS Number
11185692
Category
Engines
Last Updated
2/20/2025
Location
Wayne, NJ, US
Sold By
Camp Auto and Truck Parts Inc.
(833) 527-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
2010 Mack MP7 Engine for a Mack LEU613
$5,800 USD
Good running Mack MP7 engine assembly. 313,594 Miles. 25,576 Hours. Cut wiring harness. 120 Day guarantee.
Condition
Used
Horse Power
300 HP
Fits To Make(s)
MACK
Fits To Model(s)
LEU613
Stock Number
1049230
MLS Number
13070192
Category
Engines
Last Updated
1/24/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
1997 Mack EM7 Engine for a Mack MR688S
$6,800 USD
Good running Mack EM7 engine assembly. TMU. 45 PSI oil pressure. Old style oil cooler. Thermorstat housing broken. Missing fuel line from lift pump to fuel pump. 120 day guarantee.
Condition
Used
Horse Power
300 HP
Fits To Make(s)
MACK
Fits To Model(s)
MR688S
Stock Number
1047830
MLS Number
12928442
Category
Engines
Last Updated
1/24/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
1997 Mack EM7 Engine for a Mack MR688S
$6,800 USD
Good Running Mack EM7 engine assembly. 449,000 Miles. Early style oil cooler. 120 Day guarantee.
Condition
Used
Horse Power
300 HP
Fits To Make(s)
MACK
Fits To Model(s)
MR688S
Stock Number
1044941
MLS Number
12623054
Category
Engines
Last Updated
1/24/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
2011 Mack MP7 Engine for a Mack MRU613
$3,800 USD
Good running Mack MP7 engine assembly. Tmu. 65 PSI oil pressure. Broken valve cover and flywheel housing. 120 day guarantee.
Condition
Used
Horse Power
300 HP
Fits To Make(s)
MACK
Fits To Model(s)
MRU613
Stock Number
1044577
MLS Number
12593203
Category
Engines
Last Updated
1/24/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
2014 Mack MP7 Engine for a Mack MRU613
$3,800 USD
Good running Mack MP7 engine assembly. TMU. 15,985 hours. 60 PSI oil pressure. New exhaust manifold gaskets and turbo gasket. Oil fill neck broke off oil pan. 120 day guarantee.
Condition
Used
Horse Power
345 HP
Fits To Make(s)
MACK
Fits To Model(s)
MRU613
Stock Number
1044570
MLS Number
12686179
Category
Engines
Last Updated
1/24/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
2011 Mack MP7 Engine for a Mack LEU613
$12,600 USD
Good running Mack MP7 engine assembly. 136,000 miles. 60 PSI oil pressure. 120 day guarantee.
Condition
Used
Horse Power
325 HP
Fits To Make(s)
MACK
Fits To Model(s)
LEU613
Stock Number
1041439
MLS Number
12375805
Category
Engines
Last Updated
1/24/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
2010 Mack MP7 Engine for a Mack LEU613
$8,600 USD
Good running Mack MP7 engine assembly. 209K miles. 60 psi oil pressure. Broken valve cover and flywheel housing. 120 Day guarantee.
Condition
Used
Horse Power
300 HP
Fits To Make(s)
MACK
Fits To Model(s)
LEU613
Stock Number
1036365
MLS Number
12090464
Category
Engines
Last Updated
1/24/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
2010 Mack MP7 Engine for a Mack LEU613
$10,300 USD
Good running Mack MP7 engine assembly. 177K miles. 50 psi oil pressure. Broken valve cover. 120 day guarantee.
Condition
Used
Horse Power
300 HP
Fits To Make(s)
MACK
Fits To Model(s)
LEU613
Stock Number
1036083
MLS Number
12090461
Category
Engines
Last Updated
1/24/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
Mack MP7 Engine - 320 HP
$12,000 USD
Good running Mack MP7 complete engine assembly. 78,023 miles. 120 day guarantee.
Condition
Used
Horse Power
320 HP
Stock Number
1035458
MLS Number
12018477
Category
Engines
Last Updated
1/24/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
2005 Mack AC Engine
$4,090 USD
SL 452026
Condition
Used
Usage
782,088 Miles
Horse Power
330 HP
Fits To Make(s)
MACK
Fits To Model(s)
AC
Stock Number
2464067
MLS Number
13246657
Category
Engines
Last Updated
1/25/2025
Location
Tampa, FL, US
Sold By
LKQ Heavy Truck
(855) 905-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
21
0
2003 Mack E7 300 HP Engine
Call for price
2003 Mack E7 300 HP Engine For Sale - Family#: 2MKXH11.9V60 - Serial#: 200222 - Complete with all the accessories - Used - May have some cosmetic blemishes (see photos). Give us a shout by...
Condition
Used
CPL/ARR
other
Horse Power
300 HP
Fits To Make(s)
Mack
Fits To Model(s)
MR688S
Will Fit Year(s)
2003
Part Number
E7-300
Stock Number
MK-0613-11
MLS Number
10554901
Category
Engines
Last Updated
12/2/2024
Location
York, ON, Canada
Sold By
Lomoca Inc.
(833) 835-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
6
1
1994 Mack E7-300 Engine
Call for price
USED E7-300 HP MACK MECHANICAL ENGINE, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.
Condition
Used
Horse Power
300 HP
Stock Number
1290-12111913
MLS Number
10014185
Category
Engines
Last Updated
11/5/2024
Location
Miami, FL, US
Sold By
4-Trucks Enterprises LLC
(833) 734-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
5
0
2009 Mack MP7 Diesel Engine - 325 HP
$6,750 USD
LOW MILEAGE (42,000 SHOWING ON ECM), 2009 MACK MP7 DIESEL ENGINE FOR SALE at ADELMAN'S in CANTON, OHIO. RUN TESTED TAKEOUT, COMPLETE (HAS REPAIRED OIL PAN) with ECM and STARTER, EXHAUST...
Condition
Used
Horse Power
325 HP
Stock Number
MP7-523988
MLS Number
13176784
Category
Engines
Last Updated
2/12/2025
Location
Canton, OH, US
Sold By
Adelmans Truck Parts
(844) 382-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
6
0
Mack EM7 Engine for a 1997 Mack CH612
$5,750 USD
(Used) 1997 Mack EM7-300, ENGINE ASSEMBLY- Displacement: 11.9L, Horsepower: 300, Serial Number: 7A2267, E.C.S: SPL, For more information about this item, give us a call. We ship Worldwide!...
Condition
Used
Horse Power
300 HP
Fits To Make(s)
Mack
Fits To Model(s)
CH612
Will Fit Year(s)
1997
Stock Number
P-89792
MLS Number
13174585
Category
Engines
Last Updated
10/18/2024
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
1
2
3
4
5
Save Search
Email Alert
What's
Save Search and Email Alert
?
Want to narrow or modify your search criteria?
Filter by Price
Filter by Year
Filter by Location
Filter by Model
Filter by Keyword
Modify your search
Did you find what you were looking for?
Yes
No
What option below best describes your issue?
Choose an option...
I still cannot find what I am looking for.
How do I filter or sort my search?
Could you add a feature?
A picture or description looks incorrect.
Something is broken.
Thank you for the feedback! If you have any suggestions on how to improve our site, please let us know.
Send Feedback
Thank you for the feedback! Your suggestions and feedback immensely help us improve our site.
Got a engine to sell? In minutes, you can create an online listing for your engine and advertise it to thousands of buyers.
Start selling today
Search Saved
Your search criteria for
Used Mack Engines with 300-349 HP For Sale
has been saved. Quickly jump to this search by going to
My Account
and
Saved Searches
.
Alert Created
Your new listings email alert for
Used Mack Engines with 300-349 HP For Sale
has been created. To change the email frequency or to modify your alerts, click on
My Account
,
Personal Settings
, and
New Listing Alerts
.