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Lot # 6684
INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Sat, Aug 22, 2026 (CDT)
Condition: Used
Stock Number: 6684
Description: International 666 Tractor Runs and works. Runs rough at full throttle. Open station, 2 wheel drive. Unknown hours. Quantity: 1
Updated: Saturday, August 22, 2026 12:14 PM
Location: Millersburg, Ohio
Seller: Mt. Hope Auction
Rear PTO: Yes
Transmission Type: Gear Drive
Drive: 2WD
Engine Horsepower: 75 HP
Serial Number: U015833
Condition: Used
Description: IH 666 366 W/366 diesel engine, newer paint, heavy clutch and Torque springs, 18.4x 38 rubber (very nice tractor)* Quantity: 1
Updated: Saturday, August 22, 2026 12:56 PM
Location: Worthington, Minnesota
Condition: Used
Stock Number: 28226
Description: saddle tanks, 3988 hours, pto, 54' hydraulic folding boom, sn 33933hs Quantity: 1
Updated: Friday, August 21, 2026 04:45 PM
Location: Big Rapids, Michigan
Seller: Vander Kolk Auctions
Lot # 4822
INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Sat, Aug 01, 2026 (CDT)
Condition: Used
Stock Number: 4822
Description: International Farmall 666 Tractor 7091 Hours, Runs and Operates, 2WD, 3 Point, 540 PTO, 2 Remotes, TA Works Quantity: 1
Updated: Saturday, August 01, 2026 10:52 AM
Location: Clifford Township, Pennsylvania
Seller: Lopatofsky Auction
Condition: Used
Stock Number: 9208
Description: 2WD, Hours Showing: 7091, Diesel, Gear Transmission, 3pt, 540 PTO, Rear Hydraulic Couplers, Front Tires: 10.00-16, Rear Tires: 16.9-38 Quantity: 1
Updated: Tuesday, July 28, 2026 12:50 PM
Location: Leola, Pennsylvania
Seller: Wolgemuth Auction
Hours: 7,099
Drive: 2WD
Engine Horsepower: 75 HP
Serial Number: 2450150U008019
Condition: Used
Description: 1972 International Farmall 666 shows 7,099 hrs., 2WD, WF, open station, gas, 10 spd., 2 hyd., 3 pt., 540 PTO, 6.00-16 fronts, 14.9-38 rears
Seria...
Updated: Saturday, July 25, 2026 01:47 PM
Location: Hector, Minnesota
Seller: Steffes Group, Inc - West Fargo
Lot # DY2969
1975 INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Jul 21, 2026 (CDT)
Hours: 7,412
Drive: 2WD
Engine Horsepower: 75 HP
Serial Number: 2450170U015066
Condition: Used
Description: International Harvester Farmall 666 tractor, Hours: 7,412 on meter, Serial: 2450170U015066, Cylinders: 6, Fuel type: Diesel, Torque amplifier, 10F ...
Updated: Wednesday, July 22, 2026 07:30 AM
Location: Great Bend, Kansas
Seller: Purple Wave
Lot # LX1320
1976 INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Jul 08, 2026 (CDT)
Hours: 2,440
Drive: 2WD
Engine Horsepower: 75 HP
Serial Number: 2450168U015232
Condition: Used
Description: 1976 International 666 2WD Tractor W/Loader, 2,440 Hrs Showing, 75 Hp, International 5.1L Diesel Engine, 5 Speed Manual Transmission With Torque Am...
Updated: Wednesday, July 08, 2026 04:16 PM
Location: Hartington, Nebraska
Seller: Big Iron
Lot # 7424
INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Sat, Jun 27, 2026 (CDT)
Drive: 2WD
Engine Horsepower: 75 HP
Condition: Used
Stock Number: 7424
Description: 7424 IH 666 diesel Tractor with Like New Bushhog 2426 QT Loader Quantity: 1
Updated: Saturday, June 27, 2026 09:10 AM
Location: Sharon Springs, New York
Seller: MacFadden & Sons Inc.
Lot # 9003
1973 INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Jun 16, 2026 (CDT)
Drive: 2WD
Engine Horsepower: 75 HP
Serial Number: U009953
Condition: Used
Description: 1973 IH 666 Tractor #U009953
1665Hrs, Gas, WF, 2Hyd, 3Pt, TA Good, Flat Top Fenders, 4 Rear Wheel Wts, 6.50 x 16 Fronts, Firestone 15.5 x 38 Rubber...
Updated: Thursday, June 25, 2026 10:46 AM
Location: Marion, South Dakota
Seller: Wieman Land & Auction Co.
Hours: 5,183
Drive: 2WD
Engine Horsepower: 75 HP
Serial Number: 2450150U010719
Condition: Used
Description: International 666 tractor
SN: 2450150U010719, Shows 5183 Hours, 15.5-38 Rear Tires, 6.50-16 Front Tires, Good running tractor, Brakes need tighten...
Updated: Sunday, June 14, 2026 02:58 AM
Location: Lemars, Iowa
Seller: Zomer Auctions
Lot # 261073
INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Sat, May 30, 2026 (CDT)
Condition: Used
Stock Number: 261073
Description: COMPLETE OVERHAUL, VERY NICE Quantity: 1
Updated: Saturday, May 30, 2026 12:25 PM
Location: Wyanett, Illinois
Seller: Rediger Auction Service
Hours: 5,570
Drive: 2WD
Engine Horsepower: 75 HP
Serial Number: 2450151U009647
Condition: Used
Stock Number: 40574
Description: International 666 2WD Tractor - 5570 Original Hours, Diesel, 2 Scvs, 540 Pto, 16.9-38 Tires, Located At Ed's Machinery, Memphis, MO. Contact 660,88...
Updated: Monday, June 01, 2026 02:34 PM
Location: Memphis, Missouri
Seller: Ed's Machinery LLC
Lot # 107
1974 INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Tue, Apr 14, 2026 (CDT)
Drive: 2WD
Engine Horsepower: 75 HP
Condition: Used
Stock Number: M-9
Description: M-9 74 IH 666 Tractor Quantity: 1
Updated: Tuesday, April 14, 2026 12:17 PM
Location: Waukon, Iowa
Seller: Sweeney Auction Service
Drive: 2WD
Engine Horsepower: 75 HP
Serial Number: 2450147U009480
Condition: Used
Description: International 666 Tractor
Updated: Tuesday, April 21, 2026 09:16 AM
Location: Wadesboro, North Carolina
Seller: Iron Horse Auction Company, Inc.
Lot # 280
1976 INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Sat, Apr 11, 2026 (CDT)
Serial Number: 2450168U015999
Condition: Used
Stock Number: 3506
Description: Low side of TA is weak, works sometimes, runs and drives good otherwise, local hay retirement Quantity: 1
Updated: Saturday, April 11, 2026 12:15 PM
Location: Lancaster, Pennsylvania
Seller: Restoration Tractor Sales
Lot # 2143
1976 INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Sat, Apr 11, 2026 (CDT)
Condition: Used
Stock Number: 2143
Description: Sells with no Reserve! 6 cylinder diesel engine 5 speed transmission with working T/A 3 point hitch 2 sets of hydraulic remotes 540 PTO 1 set of re...
Updated: Saturday, April 11, 2026 01:19 PM
Location: Valparaiso, Indiana
Seller: Kraft Auction Service
Lot # 2142
1976 INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Apr 11, 2026 (CDT)
Drive: 2WD
Engine Horsepower: 75 HP
Condition: Used
Description: 1976 International Harvester 666 Diesel 6 cylinder diesel engine 5 speed transmission with working T/A 3 point hitch 2 sets of hydraulic remotes 5...
Updated: Monday, April 20, 2026 02:49 PM
Location: Valparaiso, Indiana
Seller: Kraft Auction Service
Lot # 2173
INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Sat, Mar 21, 2026 (CDT)
Serial Number: 2450150U01083
Condition: Used
Stock Number: 5294
Description: IH 666 tractor, gas, WF, 3pt, pto, New 15.5-38 tires, 3590 hrs Quantity: 1
Updated: Saturday, March 21, 2026 01:26 PM
Location: Willshire, Ohio
Seller: Schrader Real Estate and Auction Company, Inc
Serial Number: 2450166U015384
Condition: Used
Stock Number: 22
Description: Red Quantity: 1
Updated: Thursday, April 02, 2026 10:45 AM
Location: Piasa, Illinois
Seller: Hanold Auctioneering
Lot # 8158
INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Thu, Mar 19, 2026 (CDT)
Serial Number: 32910
Condition: Used
Stock Number: 8158
Description: 666 INTERNATIONAL W/ LEON LDR AND BUCKET 32910 Quantity: 1
Updated: Thursday, March 19, 2026 01:23 PM
Location: Idabel, Oklahoma
Seller: Brinkley Auctions Inc.
Lot # 1140
INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Wed, Mar 04, 2026 (CST)
Hours: 5,247
Serial Number: 2450149U008961
Condition: Used
Stock Number: 16619
Description: International 666 Tractor 'Ride & Drive - Drive Train Guarantee' - 5,247 Hours on Meter, 2wd, Narrow Front, Hydro, Diesel, 16.9-38 Rear Tires, 540 ...
Updated: Wednesday, March 04, 2026 09:54 AM
Location: Shippensburg, Pennsylvania
Seller: Martin's Auction & Equipment
Lot # KL6009
1973 INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Dec 23, 2025 (CST)
Hours: 289
Drive: 2WD
Engine Horsepower: 75 HP
Serial Number: 2450150U008474
Condition: Salvaged
Description: 1973 International Farmall 666 2WD Tractor, 0289 Not Correct Hrs Showing, 69 PTO Hp, I-H 291ci 6-cylinder Gas Engine (Not Running), 5-speed Transmi...
Updated: Tuesday, December 23, 2025 04:09 PM
Location: Perry, Kansas
Seller: Big Iron
Lot # 19659
INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Fri, Dec 19, 2025 (CST)
Serial Number: 2450168U013070
Condition: Used
Stock Number: 19659
Description: IH 666 TRACTOR, 2WD, OPEN STATION, 5 SPEED TRANS, 3PT NO TOP LINK, 540 PTO, DIESEL, 15.5-38 REAR TIRES Quantity: 1
Updated: Friday, December 19, 2025 04:42 PM
Location: Hopkinsville, Kentucky
Seller: Roeder Auction Company
Lot # 8699
INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Thu, Dec 18, 2025 12:27 PM (CST)
Drive: 2WD
Engine Horsepower: 75 HP
Serial Number: UNKNOWN
Condition: Used
Description: Diesel, wide front, 34" rears, just came out of the shop. New Hydraulic pump, hydraulic oil, engine oil, air filter
Updated: Thursday, December 18, 2025 12:42 PM
Location: Wessington Springs, South Dakota
Seller: Springside Sales Inc.
Hours: 2,491
Drive: 2WD
Engine Horsepower: 75 HP
Serial Number: 2450167U014381
Condition: Used
Description: 2491 hrs complete overhaul, new clutch, new TA and electronic ignition. Tractor runs out really nice. Tractor has dual hyd. and 15.5x38's.
Updated: Wednesday, December 17, 2025 02:25 PM
Location: Carleton, Michigan
Seller: Brad Neuhart Auctions
Serial Number: 2450150U012083
Condition: Used
Stock Number: 44
Description: 666 INTERNATIONAL, 4WD: NO, Fuel: GAS, Condition: GOOD/ORIGINAL CONDITION, Serial#: 2450150U012083, Hours: 2652, Quantity: 1
Updated: Friday, November 14, 2025 07:38 PM
Location: Bowling Green, Kentucky
Seller: Mills Real Estate & Auction Co.
Lot # LX2551
1975 INTERNATIONAL 666
40 HP to 99 HP Tractors
Auction Ended:Nov 04, 2025 (CST)
Hours: 3,752
Drive: 2WD
Engine Horsepower: 75 HP
Serial Number: 2450168U015272
Condition: Used
Description: Year
1975
Make
International
Model
666
What
2WD Tractor
Hours
3,752 Hrs Showing
Serial Number
2450168U015272
1975 International 666 2WD Tractor, 3,...
Updated: Tuesday, November 04, 2025 12:49 PM
Location: Williamsburg, Iowa
Seller: Big Iron