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.

192922C1 - Grain Tank Unloader Drive Sprocket
SKU: 192922C1
7 in stock

192475C3 - Lower Unloader Housing
SKU: 192475C3
7 in stock

192139C2 - Grain & Tailings Elevator Drive Sprocket
SKU: 192139C2
47 in stock

191790C2 - False Bottom; Elevator Hinge
SKU: 191790C2
2 in stock

191785C1 - Tailings Elevator Head Shaft
SKU: 191785C1
48 in stock

191778C2 - Tailings Elevator Housing
SKU: 191778C2
4 in stock

191771C1 - Tailings Elevator Boot
SKU: 191771C1
13 in stock

191734C1 - Tailings Auger
SKU: 191734C1
10 in stock

189456A1 - LH Front Inclined Grain Elevator Head Plate
SKU: 189456A1
3 in stock

188285C1 - Grain Auger Trough Support RH Ring
SKU: 188285C1
4 in stock

188119C1 - Elevator Head Trough
SKU: 188119C1
10 in stock

186700C1 - Delivery Auger Tube Flange
SKU: 186700C1
19 in stock

185038C7 - Auger Bed Trough Assy
SKU: 185038C7
5 in stock

183210C91 - Elevator Jackshaft Drive Hub Assy
SKU: 183210C91
48 in stock

182838C1 - Grain Tank Unload Auger Outer Brg Support-Cap
SKU: 182838C1
1 in stock

176579C1 - Idler (Flat) Pulley
SKU: 176579C1
37 in stock

174193C1 - Tailings Elevator; Perforated Door
SKU: 174193C1
30 in stock

168683C1 - Clean/ Tailings Elevator Sprocket
SKU: 168683C1
77 in stock

162103C91 - Grain Delivery (For Corn & Grain) Auger
SKU: 162103C91
15 in stock

160796C91 - Outer Unloading Auger Bearing
SKU: 160796C91
161 in stock

156910C1 - Tailings Elevator; Non-perforated Door
SKU: 156910C1
2 in stock

156010C92 - Elevator Drive/ Auger Trough Bearing
SKU: 156010C92
379 in stock

1541638C1 - Clean Grain; Non-Perforated Trough
SKU: 1541638C1
14 in stock

1347499C2 - Unloading 172" 1-piece Auger
SKU: 1347499C2
6 in stock
