Get Financing1 - 28 of 229 Listings
RentAll
Hours: 3,079
ROPS: Enclosed
Serial Number: PBA00201
Stock Number: PBA201
Rear Winch: Yes
Drawbar: Yes
Description: 421
BATTERY, STANDARD, PACKAGE
CATERPILLAR PRODUCT LINK 522
DOORS, ENGINE, STANDARD
ENCLOSURE, LOWER, PANELS, STD
FINAL DRIVE, STANDARD, LGP
...
Updated: Wednesday, October 21, 2026 02:04 AM
Location: Casper, Wyoming
Seller: Wyoming Machinery Company
Hours: 2,560
ROPS: Enclosed
Serial Number: KJL01264
Stock Number: KJL1264
Engine Manufacturer: CATERPILLAR
Track Type: Steel
Description: 421
D6T LGP TRACK TYPE TRACTOR
DRAINS, ECOLOGY, POWERTRAIN
DRAW BAR W/CWT
GUARD, RADIATOR,HINGED, HD
GUIDE, TRACK, MODERATE SERVICE
HEATER, ...
Updated: Tuesday, October 06, 2026 08:26 AM
Location: Gillette, Wyoming
Seller: Wyoming Machinery Company
Hours: 3,433
ROPS: Open
Serial Number: 54X00694
Description: Superior CPX Hydraulic Conversion, Boom of Choice
Updated: Wednesday, September 16, 2026 03:50 PM
Location: Denver, Colorado
Seller: Worldwide Machinery
Hours: 3,200
ROPS: Open
Serial Number: 1KW00202
Description: ROPS, Hydraulic Pipelayer, Boom Of Choice. Well maintained rental fleet equipment. Offered cleaned and painted.
Updated: Wednesday, September 16, 2026 03:46 PM
Location: Houston, Texas
Seller: Worldwide Machinery
Hours: 1,730
ROPS: Open
Serial Number: TAD00141
Description: ROPS, Hydraulic Pipelayer, Boom of choice-(6) Six total units available for sale, well maintained rental fleet pipelayers!!! Very detailed records ...
Updated: Wednesday, September 16, 2026 03:40 PM
Location: Houston, Texas
Seller: Worldwide Machinery
Hours: 4,224
ROPS: Open
Serial Number: CPH00168
Description: ROPS, Hydraulic Pipelayer, Boom of choice. Well maintained rental fleet pipelayers. Detailed service records.
Updated: Wednesday, August 12, 2026 12:54 PM
Location: Salt Lake City, Utah
Seller: Worldwide Machinery
Hours: 376
ROPS: Open
Serial Number: 95N00232
Description: ROPS, Superior Conversion Hydraulic Package, Boom of Choice
Updated: Wednesday, August 12, 2026 12:57 PM
Location: Lubbock, Texas
Seller: Worldwide Machinery
Hours: 1,080
ROPS: Open
Serial Number: 16W00458
Description: ROPS, Superior Hydraulic Draw-works Conversion, Reconditioned, 5 Rental Units in stock. Well maintained, complete records available.
Updated: Tuesday, September 15, 2026 05:14 PM
Location: Odessa, Texas
Seller: Worldwide Machinery
Hours: 572
ROPS: Open
Serial Number: 92V12667
Description: ROPS, Superior Hydraulic Conversion Kit, Fully Hydraulic with Single Lever Controls, 40 Ton Capacity, 65% or Better Undercarriage, 3 Month Warranty
Updated: Tuesday, October 06, 2026 07:05 PM
Location: Lubbock, Texas
Seller: Worldwide Machinery
Hours: 3,514
Horsepower: 125 HP
ROPS: Enclosed
Serial Number: CAT00D6KPDHA00279
Stock Number: NE026
A/C: Yes
Description: Cab, Cat C6.6 Accert 125HP tier 3 diesel, 30" pads, hydrostat drive, system 1 undercarriage, A/C heater, 2017 Midwestern M540CK side boom, max lift...
Updated: Tuesday, August 25, 2026 12:19 PM
Location: Morris, Illinois
Seller: Norsemen Group
Hours: 13,525
ROPS: Open
Pipeline Equipment Type: Pipeline Welder
Description: Cat D6M LGP w/ Vanguard CPW 125-4 Welder Platform
Cat D6M - Finger Tip Controls, 34" Pads, 75% Cat U/C
Vanguard CPW 125-4 - 4702 hours, Cummin...
Updated: Thursday, September 10, 2026 11:39 AM
Location: Peoria, Illinois
Seller: HOERR MACHINERY LLC
Hours: 5,513
ROPS: Open
Serial Number: ALY02768
Description: OROPS, VPATLGP bulldozer, SALT undercarriage with 24" track pads, Vanguard Combo Pipelayer conversion, excellent condition, 2 avail.
Updated: Monday, October 05, 2026 08:03 AM
Location: Catoosa, Oklahoma
Seller: Equipment World Inc
Hours: 942
Horsepower: 125 HP
ROPS: Enclosed
Serial Number: CAT0PL61TWGS00628
Stock Number: NE005
Hours Meter: Accurate / Verified
Description: Cab, Cat C6.6 Acert 125HP, 30" pads, hydrostat drive, system 1 undercarriage, A/C heater, 18' boom, max lift 40,000 lbs., 37,500 lbs
Updated: Tuesday, August 25, 2026 12:19 PM
Location: Morris, Illinois
Seller: Norsemen Group
Hours: 1,703
Horsepower: 125 HP
ROPS: Enclosed
Serial Number: CAT0PL61CWGS00630
Stock Number: NE006
A/C: Yes
Description: Cab, Cat C6.6 Acert 125HP, 30" pads, hydrostat drive, system 1 undercarriage, A/C heater, 18' boom, max lift 40,000 lbs., 37,500 lbs.
Updated: Tuesday, August 25, 2026 12:19 PM
Location: Morris, Illinois
Seller: Norsemen Group
Hours: 685
Horsepower: 125 HP
ROPS: Enclosed
Serial Number: CAT0PL61KWGS00308
Stock Number: NE008
A/C: Yes
Description: Cab, Cat C6.6 Acert 125HP, 30" pads, hydrostat drive, system 1 undercarriage, A/C heater, 18' boom, max lift 40,000 lbs., 37,500 lbs
Updated: Tuesday, August 25, 2026 12:19 PM
Location: Morris, Illinois
Seller: Norsemen Group
Hours: 3,043
Drive: Track
Horsepower: 125 HP
ROPS: Enclosed
Serial Number: CAT0PL61KWGS00289
Stock Number: NE007
Description: Cab, Cat C6.6 Acert 125HP, 30" pads, hydrostat drive, system 1 undercarriage, A/C heater, 18' boom, max lift 40,000 lbs., 37,500 lbs
Updated: Tuesday, August 25, 2026 12:19 PM
Location: Morris, Illinois
Seller: Norsemen Group
Hours: 2,681
Horsepower: 125 HP
ROPS: Open
Serial Number: CAT0PL61TWGS00242
Stock Number: NE031
Hours Meter: Accurate / Verified
Description: Canopy, Cat C6.6 Acert 125HP tier 3 diesel, 30" pads, hydrostat drive, system 1 undercarriage, 18' boom, max lift 40,000 lbs., 37,500 lbs.
Updated: Tuesday, August 25, 2026 12:19 PM
Location: Morris, Illinois
Seller: Norsemen Group
Hours: 3,769
Horsepower: 125 HP
ROPS: Open
Serial Number: CAT0PL61CWGS00126
Stock Number: NE030
Hours Meter: Accurate / Verified
Description: Canopy, Cat C6.6 Acert 125HP tier 3 diesel, 22" pads, hydrostat drive, system 1 undercarriage, 18' boom, max lift 40,000 lbs., 37,500 lbs.
Updated: Tuesday, August 25, 2026 12:19 PM
Location: Morris, Illinois
Seller: Norsemen Group
ROPS: Open
Serial Number: 54X00667
Stock Number: 561D Hydraulic PL
Description: 561D Hydraulic Pipelayer S/N 54X00667
Hydraulic conversion
40,000 lbs. capacity
OROPS
Two speed load line winch
Single speed boom winch
...
Updated: Tuesday, September 22, 2026 07:49 AM
Location: Tulsa, Oklahoma
Seller: Challenger Services
ROPS: Open
Serial Number: 54X00337
Stock Number: 561D Hydraulic PL
Description: 561D Hydraulic Pipelayer S/N 54X00337
Challenger CPC-561 Hydraulic Conversion - 2013
40,000 lbs. capacity
Two speed load line winch
Single...
Updated: Tuesday, September 22, 2026 07:49 AM
Location: Tulsa, Oklahoma
Seller: Challenger Services
ROPS: Open
Serial Number: 54X00643
Stock Number: 561D Hydraulic PL
Description: 561D Hydraulic Pipelayer S/N 54X00643
Hydraulic Conversion
40,000 lbs. capacity
OROPS
Two speed load line winch
Single speed boom winch
...
Updated: Tuesday, September 22, 2026 07:49 AM
Location: Tulsa, Oklahoma
Seller: Challenger Services
Hours: 6,045
Drive: Track
Horsepower: 300 HP
ROPS: Open
Serial Number: 77V14212
Stock Number: U0462
Description: 1980 CAT D8K w/ Midwestern M583 Pipelayer
This 1980 Caterpillar D8K is equipped with a Midwestern M583 pipelayer attachment and ROPS, making it ...
Updated: Friday, October 09, 2026 03:03 PM
Location: Perrysburg, Ohio
Seller: Michels Equipment Sales
ROPS: None
Serial Number: 62A383
Description: Midwestern 561C All Hydraulic Pipelayer Sideboom, 20" double bar pads, hydraulic winches, 6 cyl Cat Diesel, Runs Great,
Updated: Monday, October 19, 2026 10:50 AM
Location: Woodland, California
Hours: 7,000
ROPS: Open
Description: Runs, can go to work. I have several others for sale if you need pipelayers give me a call.
Updated: Friday, October 16, 2026 05:09 PM
Location: Wichita Falls, Texas
Seller: Garcia Grading & Holding LLC
Hours: 13,481
ROPS: Open
Serial Number: 92J433
Stock Number: 73CAT561PIPE
Description: nice machine, dual winches, runs and operates excellent. good U/C, *MACHINE HAS SET FOR A LONG TIME AND WILL NEED A FULL SERVICE AND GOING OVERGOIN...
Updated: Tuesday, October 20, 2026 03:31 PM
Location: Covington, Tennessee
Seller: Don Baskin Truck Sales LLC
ROPS: Open
Description: Please Contact For Further Details
Updated: Monday, October 05, 2026 08:38 AM
Location: Columbia, Maryland
Seller: Energy Kinetics, LLC
Hours: 1,200
ROPS: None
Serial Number: 92J197
Stock Number: 172-24165
Description: Midwestern Hydraulic Conversion, Cat 3306 Diesel,newer rails
Located in Woodland California
Updated: Monday, October 19, 2026 10:50 AM
Location: Woodland, California
ROPS: None
Serial Number: 54X763
Stock Number: 8841
Description: Hyd. Counterweight, 18' Boom,
Powershift Trans,
CAT 3306 DI
35k lbs obo
40k lift
Updated: Wednesday, September 09, 2026 11:26 AM
Location: Madera, California
Seller: National Equipment, LLC
