Case IH 1666 Combine Parts
1666 parts and accessories
The Case IH 1666 combine, manufactured from 1985-1992, was a popular choice for farmers seeking a reliable and versatile machine. Boasting a robust 165 HP engine and available header widths up to 30 feet, the 1666 utilized a conventional cylinder/walker separation system. Its reputation for simplicity and durability made it a workhorse in grain harvesting operations.
Introduced in 1985, the Case IH 1666 was a mid-sized combine designed to offer a balance of performance and affordability. Powering the 1666 was an International Harvester DT-402 naturally aspirated diesel engine, producing 165 horsepower with a displacement of 402 cubic inches. The combine features a conventional threshing system with a 30-inch diameter cylinder and six straw walkers for separation. Its grain tank held approximately 185 bushels, and unloading speeds reached around 80 bushels per minute. Available header widths ranged from 13 to 30 feet, accommodating various field sizes and crop types. Optional features included a straw chopper or spreader, and the cab offered basic operator comfort with controls for machine functions. The Case IH 1666 performed exceptionally well in harvesting wheat, soybeans, corn, and other small grains, gaining a reputation for its dependability and ease of maintenance.
Specifications
| Engine | International Harvester DT-402 165 HP 402ci Diesel |
|---|---|
| Separator Type | Conventional - 30-inch Cylinder |
| Grain Tank | 185 bushels |
| Unloading Rate | 80 bu/min |
| Header Widths | 13-30 ft |
| Fuel Capacity | 95 gallons |
| Weight | 17,500 lbs |
| Years Produced | 1985-1992 |
Maintenance Tips
- Regularly inspect and adjust the concave clearance to optimize threshing performance and minimize grain loss.
- Check and maintain proper tension on all belts and chains, replacing them as needed to prevent breakdowns during harvest.
- Clean the sieves and chaffer frequently to remove debris and ensure efficient grain separation.
- Grease all bearings according to the manufacturer's recommendations to prevent premature wear and extend component life. Consider performing pre-season bearing maintenance.
History & Background
The Case IH 1666 was introduced in 1985 as part of the 1600 series combines. It offered a blend of traditional combine design with improvements in capacity and efficiency over previous models. The 1666 played a significant role in providing farmers with a reliable harvesting solution during its production years.
Frequently Asked Questions
What engine is in the Case Ih 1666?
The Case IH 1666 is powered by an International Harvester DT-402 naturally aspirated diesel engine producing 165 horsepower with a displacement of 402 cubic inches.
What is the grain tank capacity on a 1666?
The Case IH 1666 has a grain tank capacity of approximately 185 bushels, with an unloading rate of about 80 bushels per minute.
What type of separator does the 1666 have?
The Case IH 1666 utilizes a conventional threshing system. It has a 30-inch diameter cylinder and six straw walkers for separation.
What are common parts needed for the 1666?
Common wear parts for the Case IH 1666 include concaves, rasp bars, belts, chains, bearings, auger fingers, and sickle sections. Regular replacement of these parts is essential for maintaining optimal performance.

556448R1 - Bushing
SKU: 556448R1
12 in stock

273633 - Cone Bearing
SKU: 273633
222 in stock

1994961C5 - Bottom; Short Finger Sieve
SKU: 1994961C5
10 in stock

1989251C1 - Shaker Shaft Pitman Assy.
SKU: 1989251C1
54 in stock

1979251C1 - Hanger Arm Shaft
SKU: 1979251C1
106 in stock

1979207C1 - Chaffer (RH) Rail
SKU: 1979207C1
11 in stock

1979206C1 - Chaffer (LH) Rail
SKU: 1979206C1
12 in stock

1970192C2 - Shaker Shaft
SKU: 1970192C2
7 in stock

1957315C8 - Top Short Finger Chaffer
SKU: 1957315C8
2 in stock

1957314C8H - Top Hillside w/ Long Finger Chaffer
SKU: 1957314C8H
5 in stock

1957314C8 - Top Long Finger Chaffer
SKU: 1957314C8
29 in stock

195161C1 - RH Side Beater Drive Pulley Assy
SKU: 195161C1
15 in stock

194853C3 - Elevator & Fan Drive Shaft
SKU: 194853C3
27 in stock

194394C1 - Female Seperator Drive Variable Pulley Hub-Fitting
SKU: 194394C1
10 in stock

193948C1 - Fan Drive Pulley
SKU: 193948C1
14 in stock

192816C1 - PTO Drive Shaft
SKU: 192816C1
28 in stock

192056C1 - Upper Grain Pan
SKU: 192056C1
18 in stock

191677C1 - Auger Bed Gear-Bevel
SKU: 191677C1
152 in stock

191384C2 - Feeder Housing Output Shaft
SKU: 191384C2
7 in stock

188846C2 - Rotor Drive Pulley Hub Assy
SKU: 188846C2
33 in stock

185286C91 - Fan Driver Adjusting Hub Assy
SKU: 185286C91
104 in stock

183333C1 - Fan Driver Fixed Pulley Hub
SKU: 183333C1
97 in stock

183288C1 - Cleaning Fan Variable Speed Pulley
SKU: 183288C1
73 in stock

181202C1 - Adjusting Gear Shaft
SKU: 181202C1
26 in stock
