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
Logging Equipment
Farm Equipment
Lifting Equipment
Attachments
Heavy Duty Truck Parts
Heavy Equipment & Tractor Parts
Trailer Parts
Aggregate & Mining Equipment
Biomass Equipment
Waste Management & Recycling Equipment
Woodworking & Sawmill Equipment
Industrial Equipment
Recreation & Utility Vehicles
Cars & SUVs
Lawn & Garden
Tools & Material
My Little Salesman Magazine
July 2025
For Rent
Commercial Trucks
Trailers
Construction Equipment
Logging Equipment
Farm Equipment
Lifting Equipment
Attachments
Aggregate & Mining Equipment
Biomass 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
Paccar
Paccar Engines For Sale by Dealerships
Filter
5
Sort
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
Close
Your Current Search
Industry
Truck Parts
Category
Engines
Manufacturer
Paccar
Market Type
For Sale
Seller Type
Dealerships
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
(709)
Category
Engines
(709)
Engine Cores
(48)
Manufacturer
Paccar
(709)
Model
337
(1)
579
(1)
MX
(10)
MX-11
(6)
MX-11 EPA 17
(2)
MX-13
(547)
OTHER
(10)
PX-6
(21)
PX-7
(44)
PX-8
(16)
PX-9
(28)
T680
(1)
Condition
New
(3)
Used
(702)
Remanufactured
(4)
Model Year
-
Horsepower
-
Inspection Report
Yes
(0)
No
(709)
Warranty
Yes
(18)
No
(0)
Price
-
Country
United States
(647)
Canada
(62)
State / Region
Select a country to view available states.
Seller Type
Dealerships
(709)
Market Type
For Sale
(709)
Filter by Specs or Location
Condition
New
3
Used
702
Remanufactured
4
Location
Alabama
3
Alberta
11
Arizona
13
Arkansas
2
California
20
Colorado
8
Connecticut
1
Florida
90
Georgia
2
Idaho
46
Illinois
12
Indiana
49
Iowa
45
Kentucky
3
Louisiana
1
Maryland
108
Massachusetts
2
Michigan
32
Minnesota
4
Mississippi
6
Missouri
18
New York
9
Ohio
8
Ontario
8
Oregon
2
Pennsylvania
31
Quebec
43
South Carolina
2
South Dakota
27
Texas
55
Utah
35
Virginia
1
Washington
12
Horsepower
< 250 HP
6
250-299 HP
24
300-349 HP
23
350-399 HP
16
400-449 HP
26
450-499 HP
169
500-549 HP
35
550+ HP
1
1-25 of 709 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 709
results
Featured Item
7
1
2013 Paccar MX-13 Engine
Newly Listed
$15,000 USD
(GOOD USED/ RUN TESTED/ INSPECTED) 2013 Paccar MX-13 Diesel Engine (EPA13), Serial # Y028338, Engine Family # DPCRH12.9M01, Displacement 12.9L, 455HP @ 1700 RPM, TEST RUN WATCH VIDEO ON JJ...
Condition
Used
Horse Power
455 HP
Part Number
DPCRH12.9M01
Stock Number
006564
MLS Number
13715175
Category
Engines
Last Updated
7/22/2025
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
Featured Item
7
1
2016 Paccar MX-13 Engine
Recently Updated
$15,000 USD
(GOOD USED/ RUN TESTED/ INSPECTED) 2016 Paccar MX-13 Diesel Engine (EPA13), Engine Family # GPCRH12.9M01, Displacement 12.9L, 455HP @ 1700 RPM, Serial # Y102271, TEST RUN WATCH VIDEO ON JJ...
Condition
Used
Horse Power
455 HP
Part Number
GPCRH12.9M01
Stock Number
006552
MLS Number
13237817
Category
Engines
Last Updated
7/18/2025
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
Featured Item
6
1
2015 Paccar MX-13 Diesel Engine 455HP EPA13
$12,500 USD
USED 2015 PACCAR MX13 DIESEL ENGINE ASSEMBLY FOR SALE , 2015 , PACCAR , MX13 , EPA13 , 455HP , S/N Y073427 , FAMILY# FPCRH12.9M01 , TESTED, INSPECTED,...
Warranty
Condition
Used
Horse Power
455 HP
Emission Rating
EPA 13
Stock Number
S35243EN
MLS Number
13673423
Category
Engines
Last Updated
7/17/2025
Location
Scranton, PA, US
Sold By
Boots and Hank's Truck Parts, Inc.
(833) 396-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
Featured Item
7
1
2018 Paccar MX-13 Engine
$16,500 USD
(GOOD USED/ RUN TESTED/ FULLY INSPECTED) 2018 Paccar MX-13 Diesel Engine (EPA17), Engine Family # JPCRH12.9M02, Displacement 12.9L, 500HP RATED, Serial # Y169655, TEST RUN WATCH VIDEO ON JJ...
Condition
Used
Horse Power
500 HP
Part Number
JPCRH12.9M02
Stock Number
006510
MLS Number
13088229
Category
Engines
Last Updated
7/14/2025
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
Featured Item
6
1
2018 Paccar MX-13 Engine
$17,000 USD
(GOOD USED/ RUN TESTED/ FULLY INSPECTED) 2018 Paccar MX-13 Diesel Engine (EPA17), Serial # Y166690, Engine Family # JPCRH12.9M02, Displacement 12.9L, 485 HP @ 1600RPM, RATED, TEST RUN WATCH...
Condition
Used
Part Number
JPCRH12.9M02
Stock Number
006470
MLS Number
13568869
Category
Engines
Last Updated
7/14/2025
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
Featured Item
9
0
2017 17 KENWORTH T680 PACCAR MX-13 ENGINE MOTOR KW/HP 340/455 COMPLETE
$11,499 USD
ENGINE TESTED AND RUNS GREAT! CALL OUR OFFICE MON-FRI 8AM-5PM (864)529-9400 OR EMAIL DIMAG@SPARTANAUTO.PARTS SHIPPING AVAILABLE TO LOWER 48 STATES FOR $750 2017 17 KENWORTH T680 PACCAR MX-13...
Condition
Used
Usage
416,616 Miles
Fits To Equipment
SEMI TRUCK, DUMP TRUCK
Fits To Make(s)
KENWORTH
Will Fit Year(s)
2017
Stock Number
T1024-01
MLS Number
13291620
Category
Engines
Last Updated
6/20/2025
Location
inman, SC, US
Sold By
Spartan Auto Parts
(888) 572-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
Featured Item
7
0
Paccar MX-13 Engine for a 2023 Peterbilt 579
$33,995 USD
(Used) 2022 PACCAR MX13, ENGINE ASSEMBLY- Displacement: 12.9L, Horsepower: 485, Housing is broken, see pictures Reference images for condition. For more information about this item, give us...
Condition
Used
Horse Power
485 HP
Fits To Make(s)
Peterbilt
Fits To Model(s)
579
Will Fit Year(s)
2023
Stock Number
P-72100
MLS Number
12630498
Category
Engines
Last Updated
5/7/2025
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
4
0
Paccar MX-13 Engine for a 2020 Kenworth T680
Recently Updated
Call for price
(Used) 2019 PACCAR MX13, ENGINE ASSEMBLY - Family Number: KPCRH12.9M01, Displacement: 12.9L, Horsepower: 455 Serial Number: Y211101, Part Number: 2176233, E.C.S:...
Condition
Used
Horse Power
455 HP
Fits To Make(s)
Kenworth
Fits To Model(s)
T680
Will Fit Year(s)
2020
Part Number
2176233
Stock Number
P-107006
MLS Number
13695870
Category
Engines
Last Updated
7/22/2025
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
7
0
Paccar Engine for a 2015 Peterbilt 337
Recently Updated
Call for price
(Used) 2014 Paccar ISL9 270, ENGINE ASSEMBLY- Family Number: ECEXH0540LAV, Displacement: 8.9L, Horsepower: 300, CPL: 3664, Serial Number: 73727917, Part Number: E6G1363WDE3F313132, ECS: EGR,...
Condition
Used
CPL/ARR
3664
Horse Power
270 HP
Fits To Make(s)
Peterbilt
Fits To Model(s)
337
Will Fit Year(s)
2015
Part Number
E6G1363WDE3F313132
Stock Number
P-103917
MLS Number
13632636
Category
Engines
Last Updated
7/22/2025
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
7
0
Paccar Engine for a 2012 Kenworth T800
Recently Updated
Call for price
(Used) 2011 PACCAR MX13, ENGINE ASSEMBLY- Family Number: BPCRH12.9M01, Displacement: 12.9L, Horsepower: 485, ESN: A064862, PartNumber: 1859847, Reference images for condition For more...
Condition
Used
Horse Power
485 HP
Fits To Make(s)
Kenworth
Fits To Model(s)
T800
Will Fit Year(s)
2012
Part Number
A064862
Stock Number
P-72833
MLS Number
12645076
Category
Engines
Last Updated
7/22/2025
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
9
0
Paccar MX-13 Engine for a 2020 Peterbilt 579
Recently Updated
$13,500 USD
MX13 EPA 17, 455 HP, S/N Y211912, 506,079.1 Miles, 11,989 Hours. Engine complete and runs good. (See video of engine running and test report), Serial#: Y211912, Core Charge: 3000, Horse...
Condition
Used
Horse Power
455 HP
Fits To Make(s)
Peterbilt
Fits To Model(s)
579
Will Fit Year(s)
2020
Stock Number
2028-1
MLS Number
13687374
Category
Engines
Last Updated
7/22/2025
Location
Fresno, CA, US
Sold By
Garabedian Equipment
(855) 794-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
4
0
Paccar MX-13 Engine
Recently Updated
$12,995 USD
LOW MILE COMPLETE STARTING AT $11,995.00 EXCHANGE WITH 100 DAY PARTS WARRANTY PLUS FREIGHT AND $1,000.00 REFUNDABLE CORE DEPOSIT.
Quantity
10
Condition
Used
Stock Number
30549
MLS Number
13353256
Category
Engines
Last Updated
7/22/2025
Location
Chicago, IL, US
Sold By
Diesel Sales
(844) 596-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
2
0
2017 Paccar MX-13 Engine for a Kenworth T880
Newly Listed
$6,995 USD
Paccar MX13 500HP Pulled from a running truck, Unknown mileage. Selling as a pullout core, as is. No oil in water or water in oil. No core required.
Condition
Used
Fits To Make(s)
KENWORTH
Fits To Model(s)
T880
Stock Number
14319
MLS Number
13712948
Category
Engines
Last Updated
7/21/2025
Location
Spokane Valley, WA, US
Sold By
High Mountain Horsepower
(833) 913-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
5
0
2017 Paccar MX-13 Engine for a Peterbilt 579
Recently Updated
$6,825 USD
(USED) Paccar MX13 Warranty: 180 Day Parts Only Assembly#: GPCRH12.9M01 Serial#: Y106936 Horsepower: 455
Condition
Used
Assembly Number
GPCRH12.9M01
Fits To Make(s)
Peterbilt
Fits To Model(s)
579
Stock Number
25560228
MLS Number
12516879
Category
Engines
Last Updated
7/20/2025
Location
Sioux Falls, SD, US
Sold By
Vander Haag's Inc.
(855) 370-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
10
0
2013 Paccar PX-6 Engine for a Kenworth T370
Recently Updated
$6,565 USD
(USED) Paccar PX6 Warranty: 180 Day Parts Only Assembly#: 3335 Serial#: 73350130 Horsepower: 250
Condition
Used
Assembly Number
3335
Fits To Make(s)
Kenworth
Fits To Model(s)
T370
Stock Number
25720703
MLS Number
13261132
Category
Engines
Last Updated
7/20/2025
Location
Sioux Falls, SD, US
Sold By
Vander Haag's Inc.
(855) 370-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
5
0
2016 Paccar MX-13 Engine for a Peterbilt 579
Price Drop
$7,030 USD
(USED) Paccar MX13 Warranty: 180 Day Parts Only Assembly#: FPCRH12.9M01 Serial#: Y088304 Horsepower: 455
Condition
Used
Assembly Number
FPCRH12.9M01
Fits To Make(s)
Peterbilt
Fits To Model(s)
579
Stock Number
25737599
MLS Number
13312644
Category
Engines
Last Updated
7/20/2025
Location
Kansas City, MO, US
Sold By
Vander Haag's Inc.
(855) 370-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
7
0
2019 Paccar MX-13 Engine for a Peterbilt 579
Recently Updated
$14,900 USD
(USED) Paccar MX13 Warranty: 180 Day Parts Only Assembly#: JPCRH12.9M01 Serial#: Y163385 Horsepower: 405
Condition
Used
Assembly Number
JPCRH12.9M01
Fits To Make(s)
Peterbilt
Fits To Model(s)
579
Stock Number
25807726
MLS Number
13660982
Category
Engines
Last Updated
7/20/2025
Location
Sioux Falls, SD, US
Sold By
Vander Haag's Inc.
(855) 370-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
2013 Paccar PX-6 Engine for a Kenworth T370
Recently Updated
$6,565 USD
(USED) Paccar PX6 Warranty: 180 Day Parts Only Assembly#: 3335 Serial#: 73350127 Horsepower: 260
Condition
Used
Assembly Number
3335
Fits To Make(s)
Kenworth
Fits To Model(s)
T370
Stock Number
25817548
MLS Number
13673784
Category
Engines
Last Updated
7/20/2025
Location
Sioux Falls, SD, US
Sold By
Vander Haag's Inc.
(855) 370-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
5
0
2019 Paccar MX-13 Engine for a Peterbilt 579
Recently Updated
$14,900 USD
(USED) Paccar MX13 Warranty: 180 Day Parts Only Assembly#: JPCRH12.9M01 Serial#: Y161530 Horsepower: 455
Condition
Used
Assembly Number
JPCRH12.9M01
Fits To Make(s)
Peterbilt
Fits To Model(s)
579
Stock Number
25822894
MLS Number
13686424
Category
Engines
Last Updated
7/20/2025
Location
Kansas City, MO, US
Sold By
Vander Haag's Inc.
(855) 370-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
5
0
2018 Paccar MX-13 Engine for a Kenworth T680
Newly Listed
$7,600 USD
(USED) Paccar MX13 Warranty: 180 Day Parts Only Assembly#: HPCRH12.9M01 Serial#: Y147703 Horsepower: VERIFY
Condition
Used
Assembly Number
HPCRH12.9M01
Fits To Make(s)
Kenworth
Fits To Model(s)
T680
Stock Number
25829259
MLS Number
13712398
Category
Engines
Last Updated
7/20/2025
Location
Winimac, IN, US
Sold By
Vander Haag's Inc.
(855) 370-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
2020 Paccar MX-13 Engine
Recently Updated
$13,800 USD
Good running Paccar MX13 engine assembly. 435,438 Miles. 10,686 Hours. 40 PSI oil pressure. 120 Day guarantee.
Condition
Used
Horse Power
455 HP
Fits To Make(s)
PACCAR
Fits To Model(s)
MX-13
Stock Number
1055885
MLS Number
13426306
Category
Engines
Last Updated
7/19/2025
Location
Fitchburg, MA, US
Sold By
Rydemore Heavy Duty Truck Parts
(888) 519-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
4
0
2015 Paccar MX-13 Engine for a Paccar MX-13 EPA 13
Recently Updated
$5,500.25 USD
Condition
Used
Usage
733,195 Miles
Fits To Make(s)
PACCAR
Fits To Model(s)
MX-13 EPA 13
Stock Number
2505681
MLS Number
13499414
Category
Engines
Last Updated
7/19/2025
Location
Watseka, IL, US
Sold By
LKQ Heavy Truck
(855) 905-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
5
0
Paccar MX-13 Engine Core
Newly Listed
Call for price
(Core) Engine does Not Turn 360 Degrees Complete, PACCAR MX13, ENGINE ASSEMBLY- Family Number: JPCRH12.9M01, Displacement: 12.9L, Horsepower: 455, E.C.S: DDI, TC, CAC, ECM, EGR-C, OC, SCR-U,...
Condition
Used
Horse Power
455 HP
Part Number
JPCRH12.9M01
Stock Number
P-107643
MLS Number
13709444
Category
Engine Cores
Last Updated
7/18/2025
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
4
0
2012 Paccar PX-8 Diesel Engine - 285 HP
Price Drop
$9,200 USD
GOOD USED 2012 PACCAR PX8 (ISC8.3) DIESEL TAKEOUT ENGINE FOR SALE at ADELMAN'S TRUCK PARTS in CANTON, OHIO. RUN TESTED and COMPLETE with ECM STARTER, 285 HP, 3735 CPL#, 241,480 MILES...
Condition
Used
Horse Power
285 HP
Stock Number
PX8-73407997
MLS Number
13176769
Category
Engines
Last Updated
7/18/2025
Location
Canton, OH, US
Sold By
Adelmans Truck Parts
(844) 382-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
10
0
2023 Paccar MX-13 Engine for a Peterbilt 579
Recently Updated
$26,420 USD
(USED) Paccar MX13 Warranty: 180 Day Parts Only Assembly#: NPCRH12.9C21 Serial#: Y287876 Horsepower: 456
Condition
Used
Assembly Number
NPCRH12.9C21
Fits To Make(s)
Peterbilt
Fits To Model(s)
579
Stock Number
25785847
MLS Number
13536325
Category
Engines
Last Updated
7/18/2025
Location
Spencer, IA, US
Sold By
Vander Haag's Inc.
(855) 370-___
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
has been saved. Quickly jump to this search by going to
My Account
and
Saved Searches
.
Alert Created
Your new listings email alert for
has been created. To change the email frequency or to modify your alerts, click on
My Account
,
Personal Settings
, and
New Listing Alerts
.