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
August 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
Construction Equipment
Water Wagons
Caterpillar
621
Caterpillar 621 Water Wagons For Sale
Filter
4
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
Construction Equipment
Category
Water Wagons
Manufacturer
Caterpillar
Model
621
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
Construction Equipment
(4)
Category
Water Wagons
(4)
Manufacturer
Caterpillar
(4)
Model
621
(4)
621B
(1)
621G
(1)
621H
(1)
621K
(1)
Condition
Used
(4)
Model Year
-
Hours
-
Horsepower
-
Enclosed Cab
Yes
(0)
No
(0)
Inspection Report
Yes
(1)
No
(3)
Warranty
Yes
(0)
No
(0)
Price
-
Country
United States
(4)
State / Region
Select a state below and click
Refine Results
.
Arizona (2)
Michigan (1)
New Mexico (1)
Seller Type
Dealerships
(4)
Market Type
For Sale
(4)
1-4 of 4 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
1-4 of 4
results
6
0
2014 Caterpillar 621K WW Water Wagon
Recently Updated
$536,000 USD
36" FILL PORT W/BOLT IN TRASH SC, 621K TRACTOR, 7543 GD 5/13/24, 8000 GAL MOBILE WATER EQUIPMENT, ACCESS LADDER TO TOP OF TANK, ANODES INSTALLED IN TANK, ANTI SIPHON FILL PIPE, BANDED...
Condition
Used
Usage
8,522 Hours
Stock Number
432038
MLS Number
8719061
Category
Water Wagons
Last Updated
8/6/2025
Location
Bloomfield, NM, US
Sold By
Wagner Equipment Co.
(855) 724-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
14
1
1980 Caterpillar 621B Water Wagon
Price Drop
$34,900 USD
1980 Cat 621B Water Wagon, 14,057 Hours, Good shape, Starts up good, Tires have good tread, Fluids checked, Runs and operates well (video available upon request)
Condition
Used
Usage
14,057 Hours
MLS Number
13655984
Category
Water Wagons
Last Updated
7/23/2025
Location
Belleville, MI, US
Sold By
Construction Station LLC
(734) 802-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
8
0
2013 Caterpillar 621H Water Wagon
$357,176 USD
Air Conditioning, Cushion Hitch, Online Owner's Manual, ROPS: ENCLOSED, Spray System, Rear, Tank Capacity: 8,000,
Inspection Report
Condition
Used
Usage
9,485 Hours
Stock Number
E203177
MLS Number
13519758
Category
Water Wagons
Last Updated
7/12/2025
Location
Eloy, AZ, US
Sold By
Empire Machinery
(855) 927-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
32
1
2001 Caterpillar 621G Water Wagon
$325,000 USD
'01 Cat 621G Water Wagon w/ 11,484hrs, 330hp Cat 3406 6-cyl 893-c.i. Turbo Diesel, Transmission: 8-speed PowerShift, Front Tires: 33.25-29, Cab: E-ROPS, Air Seat, A/C, Feature: Mega...
Condition
Used
Usage
11,484 Hours
Horse Power
330 HP
Capacity
8000
Stock Number
11221
MLS Number
11669188
Category
Water Wagons
Last Updated
12/3/2023
Location
Buckeye, AZ, US
Sold By
Integrated Machinery Inc.
(855) 586-___
SHOW
NUMBER
Call Seller
Email Seller
Save
More Info
1
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 Caterpillar water wagon to sell? In minutes, you can create an online listing for your water wagon 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
.