Case IH 674 Tractor Parts
674 parts and accessories
The Case IH 674 tractor, manufactured from 1972 to 1975, was a reliable workhorse on farms across North America. Powered by a robust 58 horsepower diesel engine, and boasting around 52 PTO horsepower, the 674 offered a balance of power and economy. Its simple design and dependable performance made it a favorite for various agricultural tasks, contributing significantly to its popularity among farmers.
The Case IH 674 was introduced in 1972 as a successor to the International Harvester 674, continuing the legacy of reliable utility tractors. Production spanned until 1975. The tractor features a 58 horsepower International Harvester D-239 3.9L 4-cylinder diesel engine, known for its durability and fuel efficiency. Transmission options included a gear-type transmission with 8 forward and 4 reverse speeds. The 674 delivered approximately 52 PTO horsepower at 540 RPM, suitable for powering a range of implements. Its hydraulic system provided around 8.5 GPM flow, sufficient for operating hydraulic remotes and the Category II 3-point hitch with a lift capacity of around 3,300 lbs. This model was commonly used for row crop operations, haying, livestock management, and light tillage tasks. The Case IH 674 distinguished itself with its simple mechanics, ease of maintenance, and a comfortable operator platform relative to other tractors of its era.
Specifications
| Engine | International Harvester D-239 58 HP 239ci Diesel |
|---|---|
| PTO HP | 52 HP @ 540 RPM |
| Transmission | Gear Type, 8 Forward / 4 Reverse |
| Hydraulics | 8.5 GPM, 2 remotes (optional) |
| 3-Point Hitch | Category II, 3300 lbs lift capacity |
| Fuel Capacity | 16 gallons |
| Weight | 5,160 lbs |
| Years Produced | 1972-1975 |
Maintenance Tips
- Change engine oil and filter every 150-200 hours using a high-quality oil specified for diesel engines.
- Regularly inspect and clean the fuel system, including fuel filters, to prevent contamination and ensure optimal performance.
- Check hydraulic fluid levels and inspect hoses for leaks. Replace hydraulic filters according to the manufacturer's recommendations.
- Before seasonal storage, drain fluids, add fuel stabilizer, and grease all lubrication points to prevent corrosion and maintain functionality.
History & Background
The Case IH 674 marked a transition in the International Harvester lineup, continuing the popular '64' series with enhanced features. While not undergoing major redesigns during its short production run, its impact was significant due to its reliability and versatile performance. It's a tractor that is still being used by farmers today.
Frequently Asked Questions
What engine is in the Case Ih 674?
The Case IH 674 is powered by an International Harvester D-239 4-cylinder diesel engine, producing 58 horsepower and having a displacement of 239 cubic inches.
What is the PTO horsepower on a 674?
The Case IH 674 has a PTO horsepower rating of approximately 52 HP at 540 RPM.
What oil filter fits the 674?
The Case IH 674 typically uses a Fram PH2870A or equivalent oil filter. Cross-references include Wix 51258 and Baldwin B2.
What are common parts needed for the 674?
Common wear parts for the Case IH 674 include engine oil filters, fuel filters, hydraulic filters, fan belts, hydraulic seals, steering components (tie rod ends, kingpins), clutch disc and pressure plate, and PTO seals.

704675R91 - Front Wheel 4.5" X 16" Rim
SKU: 704675R91
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SKU: 381725R1
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361700R1 - Rear Wheel 10" X 28" 6 Loop Rim
SKU: 361700R1
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3251239 - Front Wheel 4.5" X 16" Rim
SKU: 3251239
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3121425R91 - Front Wheel 5.5" x 18" Rim
SKU: 3121425R91
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3048866R91 - Front Wheel 4.5" X 16" Rim
SKU: 3048866R91
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1265241C1 - Rear Wheel 11" x 36" Rim
SKU: 1265241C1
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537496R1 - Front Grille
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235700A2 - Fender Handle Grommet
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VLC3223 - Wiper Blade
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3112460R91 - Interior Door (LH) Latch
SKU: 3112460R91
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3110945R91 - L Handle (Locking)
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F7356 - Needle; Idler Shaft Bearing
SKU: F7356
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66193C91 - PTO Clutch Kit
SKU: 66193C91
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66182C1 - PTO Clutch Spring
SKU: 66182C1
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66180C2 - PTO 1000 RPM Shaft
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401734R1 - PTO Shield
SKU: 401734R1
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401724R1 - PTO Clutch O-ring
SKU: 401724R1
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SKU: 401723R1
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1342559C2 - 46 Tooth Driven; Independent PTO Gear
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